CONFIG: bump patch level (240625)

- the old logic relied on the presence/absence of a comma to decide
  whether to parse as fixed or free format. This logic is faulty when
  handling the final (trailing) entry and will generally lead to the
  last field being truncated when read in.
  Now the caller decides on fixed vs free.

FIX: inconsistent Nastran surface output format

- use FREE format by default. Previously had an odd mix of SHORT
  format when created without options and LONG format (as default)
  when created with format options.

META-INFO/api-info

@@ -1,2 +1,2 @@
 api=2312
-patch=240522
+patch=240625

src/fileFormats/nastran/NASCore.C

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2017-2023 OpenCFD Ltd.
+    Copyright (C) 2017-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -136,7 +136,8 @@ std::string Foam::fileFormats::NASCore::nextNasField
 (
     const std::string& str,
     std::string::size_type& pos,
-    std::string::size_type len
+    const std::string::size_type width,
+    const bool free_format
 )
 {
     const auto beg = pos;
@@ -144,15 +145,23 @@ std::string Foam::fileFormats::NASCore::nextNasField
 
     if (end == std::string::npos)
     {
-        pos = beg + len;    // Continue after field width
+        if (free_format)
+        {
+            // Nothing left
+            pos = str.size();
+            return str.substr(beg);
+        }
+
+        // Fixed format - continue after field width
+        pos = beg + width;
+        return str.substr(beg, width);
     }
     else
     {
-        len = (end - beg);  // Efffective width
-        pos = end + 1;      // Continue after comma
+        // Free format - continue after comma
+        pos = end + 1;
+        return str.substr(beg, (end - beg));
     }
-
-    return str.substr(beg, len);
 }
 
 
@@ -249,8 +258,8 @@ void Foam::fileFormats::NASCore::writeCoord
     // 2 ID   : point ID - requires starting index of 1
     // 3 CP   : coordinate system ID                (blank)
     // 4 X1   : point x coordinate
-    // 5 X2   : point x coordinate
-    // 6 X3   : point x coordinate
+    // 5 X2   : point y coordinate
+    // 6 X3   : point z coordinate
     // 7 CD   : coordinate system for displacements (blank)
     // 8 PS   : single point constraints            (blank)
     // 9 SEID : super-element ID

src/fileFormats/nastran/NASCore.H

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2017-2023 OpenCFD Ltd.
+    Copyright (C) 2017-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -47,7 +47,6 @@ SourceFiles
 
 namespace Foam
 {
-
 namespace fileFormats
 {
 
@@ -79,18 +78,18 @@ public:
         //- Output load format
         enum loadFormat
         {
-            PLOAD2,
-            PLOAD4
+            PLOAD2,     //!< Face load (eg, pressure)
+            PLOAD4      //!< Vertex load
         };
 
-        //- Selection names for the NASTRAN file field formats
+        //- Selection names for the NASTRAN load formats
         static const Enum<loadFormat> loadFormatNames;
 
 
     // Constructors
 
         //- Default construct
-        NASCore() = default;
+        NASCore() noexcept = default;
 
 
     // Public Static Member Functions
@@ -98,18 +97,20 @@ public:
         //- Extract numbers from things like "-2.358-8" (same as "-2.358e-8")
         static scalar readNasScalar(const std::string& str);
 
-        //- A string::substr() to handle fixed-format and free-format NASTRAN.
-        //  Returns the substr to the next comma (if found) or the given length
-        //
-        //  \param str The string to extract from
-        //  \param pos On input, the position of the first character of the
-        //      substring. On output, advances to the next position to use.
-        //  \param len The fixed-format length to use if a comma is not found.
+        //- A std::string::substr() variant to handle fixed-format and
+        //- free-format NASTRAN.
+        //  Returns the substr until the next comma (if found)
+        //  or the given fixed width
         static std::string nextNasField
         (
+            //! The string to extract from
             const std::string& str,
+            //! [in,out] The parse position within \p str
             std::string::size_type& pos,
-            std::string::size_type len
+            //! The fixed-format width to use (if comma is not found)
+            const std::string::size_type width,
+            //! The input is known to be free-format
+            const bool free_format = false
         );
 
 

src/functionObjects/field/extractEulerianParticles/extractEulerianParticles/extractEulerianParticlesTemplates.C

@@ -43,7 +43,7 @@ Type Foam::functionObjects::extractEulerianParticles::faceValue
     {
         label patchi = patchIDs_[localFacei];
         label pFacei = patchFaceIDs_[localFacei];
-        if (patchi != 0)
+        if (patchi != -1)
         {
             return field.boundaryField()[patchi][pFacei];
         }

src/lagrangian/intermediate/submodels/Thermodynamic/SurfaceFilmModel/ThermoSurfaceFilm/ThermoSurfaceFilm.C

@@ -302,7 +302,7 @@ void Foam::ThermoSurfaceFilm<CloudType>::cacheFilmFields
     TFilmPatch_ = film.Tf().primitiveField();
 
     // Direct copy (one-to-one mapping)
-    TFilmPatch_ = film.Cp().primitiveField();
+    CpFilmPatch_ = film.Cp().primitiveField();
 }
 
 

src/meshTools/coordSet/writers/gltf/gltfCoordSetWriter.C

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2021-2022 OpenCFD Ltd.
+    Copyright (C) 2021-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -70,7 +70,7 @@ static tmp<vectorField> getBoundedColours
     const scalar boundMax
 )
 {
-    const label boundDelta = (boundMax - boundMin + ROOTVSMALL);
+    const scalar boundDelta = (boundMax - boundMin + ROOTVSMALL);
 
     auto tresult = tmp<vectorField>::New(field.size());
     auto& result = tresult.ref();
@@ -167,7 +167,7 @@ Foam::scalarMinMax Foam::coordSetWriters::gltfWriter::getFieldLimits
 {
     const dictionary fieldDict = fieldInfoDict_.subOrEmptyDict(fieldName);
 
-    scalarMinMax limits;
+    scalarMinMax limits(-GREAT, GREAT);
 
     fieldDict.readIfPresent("min", limits.min());
     fieldDict.readIfPresent("max", limits.max());
@@ -191,7 +191,7 @@ Foam::coordSetWriters::gltfWriter::getAlphaField
     {
         // Not specified
     }
-    else if (!eptr->stream().peek().isString())
+    else if (!eptr->stream().peek().isWord())
     {
         // Value specified
 

src/meshTools/coordSet/writers/gltf/gltfCoordSetWriter.H

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2021-2022 OpenCFD Ltd.
+    Copyright (C) 2021-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -45,24 +45,27 @@ Description
     \verbatim
     formatOptions
     {
-        // Apply colours flag (yes | no ) [optional]
-        colours     yes;
-
-        // List of options per field
-        fieldInfo
+        gltf
         {
-            p
+            // Apply colours flag (yes | no ) [optional]
+            colour      yes;
+
+            // List of options per field
+            fieldInfo
             {
-                // Colour map [optional]
-                colourMap       <colourMap>;
+                p
+                {
+                    // Colour map [optional]
+                    colourMap       <colourMap>;
 
-                // Colour map minimum and maximum limits [optional]
-                // Uses field min and max if not specified
-                min             0;
-                max             1;
+                    // Colour map minimum and maximum limits [optional]
+                    // Uses field min and max if not specified
+                    min             0;
+                    max             1;
 
-                // Alpha channel [optional] (<scalar>)
-                alpha           0.5;
+                    // Alpha channel [optional] (<scalar>)
+                    alpha           0.5;
+                }
             }
         }
     }
@@ -73,35 +76,38 @@ Description
     \verbatim
     formatOptions
     {
-        // Apply colours flag (yes | no) [optional]
-        colours     yes;
-
-        // Animate tracks (yes | no) [optional]
-        animate     yes;
-
-        // Animation properties [optional]
-        animationInfo
+        gltf
         {
-            // Colour map [optional]
-            colourMap       <colourMap>;
+            // Apply colours flag (yes | no) [optional]
+            colour      yes;
 
-            // Colour [optional] (<vector> | uniform | field)
-            colour          (1 0 0); // RGB in range [0-1]
+            // Animate tracks (yes | no) [optional]
+            animate     yes;
 
-            //colour          uniform;
-            //colourValue     (1 0 0); // RGB in range [0-1]
+            // Animation properties [optional]
+            animationInfo
+            {
+                // Colour map [optional]
+                colourMap       <colourMap>;
 
-            //colour          field;
-            //colourField     d;
+                // Colour [optional] (<vector> | uniform | field)
+                colour          (1 0 0); // RGB in range [0-1]
 
-            // Colour map minimum and maximum limits [optional]
-            // Note: for colour = field option
-            // Uses field min and max if not specified
-            min             0;
-            max             1;
+                //colour          uniform;
+                //colourValue     (1 0 0); // RGB in range [0-1]
 
-            // Alpha channel [optional] (<scalar>)
-            alpha           0.5;
+                //colour          field;
+                //colourField     d;
+
+                // Colour map minimum and maximum limits [optional]
+                // Note: for colour = field option
+                // Uses field min and max if not specified
+                min             0;
+                max             1;
+
+                // Alpha channel [optional] (<scalar>)
+                alpha           0.5;
+            }
         }
     }
     \endverbatim

src/meshTools/edgeMesh/edgeFormats/nastran/NASedgeFormat.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2017 OpenCFD Ltd.
+    Copyright (C) 2017-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -62,13 +62,17 @@ bool Foam::fileFormats::NASedgeFormat::read
 
     while (is.good())
     {
-        string::size_type linei = 0;  // parsing position within current line
         string line;
         is.getLine(line);
 
-        if (line.empty() || line[0] == '$')
+        if (line.empty())
         {
-            continue; // Skip empty or comment
+            continue;  // Ignore empty
+        }
+        else if (line[0] == '$')
+        {
+            // Ignore comment
+            continue;
         }
 
         // Check if character 72 is continuation
@@ -94,41 +98,69 @@ bool Foam::fileFormats::NASedgeFormat::read
         }
 
 
+        // Parsing position within current line
+        std::string::size_type linei = 0;
+
+        // Is free format if line contains a comma
+        const bool freeFormat = line.contains(',');
+
         // First word (column 0-8)
         const word cmd(word::validate(nextNasField(line, linei, 8)));
 
         if (cmd == "CBEAM" || cmd == "CROD")
         {
-            // discard elementId (8-16)
-            (void) nextNasField(line, linei, 8); // 8-16
-            // discard groupId (16-24)
-            (void) nextNasField(line, linei, 8); // 16-24
+            // Fixed format:
+            //  8-16 : element id
+            // 16-24 : group id
+            // 24-32 : vertex
+            // 32-40 : vertex
 
-            label a = readLabel(nextNasField(line, linei, 8)); // 24-32
-            label b = readLabel(nextNasField(line, linei, 8)); // 32-40
+            // discard elementId
+            (void) nextNasField(line, linei, 8, freeFormat);
+            // discard groupId
+            (void) nextNasField(line, linei, 8, freeFormat);
 
-            dynEdges.append(edge(a,b));
+            label a = readLabel(nextNasField(line, linei, 8, freeFormat));
+            label b = readLabel(nextNasField(line, linei, 8, freeFormat));
+
+            dynEdges.emplace_back(a,b);
         }
         else if (cmd == "PLOTEL")
         {
+            // Fixed format:
+            //  8-16 : element id
+            // 16-24 : vertex
+            // 24-32 : vertex
+            // 32-40 : vertex
+
             // discard elementId (8-16)
-            (void) nextNasField(line, linei, 8); // 8-16
+            (void) nextNasField(line, linei, 8, freeFormat);
 
-            label a = readLabel(nextNasField(line, linei, 8)); // 16-24
-            label b = readLabel(nextNasField(line, linei, 8)); // 24-32
+            label a = readLabel(nextNasField(line, linei, 8, freeFormat));
+            label b = readLabel(nextNasField(line, linei, 8, freeFormat));
 
-            dynEdges.append(edge(a,b));
+            dynEdges.emplace_back(a,b);
         }
         else if (cmd == "GRID")
         {
-            label index = readLabel(nextNasField(line, linei, 8)); // 8-16
-            (void) nextNasField(line, linei, 8); // 16-24
-            scalar x = readNasScalar(nextNasField(line, linei, 8)); // 24-32
-            scalar y = readNasScalar(nextNasField(line, linei, 8)); // 32-40
-            scalar z = readNasScalar(nextNasField(line, linei, 8)); // 40-48
+            // Fixed (short) format:
+            //  8-16 : point id
+            // 16-24 : coordinate system (unsupported)
+            // 24-32 : point x coordinate
+            // 32-40 : point y coordinate
+            // 40-48 : point z coordinate
+            // 48-56 : displacement coordinate system (optional, unsupported)
+            // 56-64 : single point constraints (optional, unsupported)
+            // 64-70 : super-element id (optional, unsupported)
 
-            pointId.append(index);
-            dynPoints.append(point(x, y, z));
+            label index = readLabel(nextNasField(line, linei, 8, freeFormat));
+            (void) nextNasField(line, linei, 8, freeFormat);
+            scalar x = readNasScalar(nextNasField(line, linei, 8, freeFormat));
+            scalar y = readNasScalar(nextNasField(line, linei, 8, freeFormat));
+            scalar z = readNasScalar(nextNasField(line, linei, 8, freeFormat));
+
+            pointId.push_back(index);
+            dynPoints.emplace_back(x, y, z);
         }
         else if (cmd == "GRID*")
         {
@@ -138,6 +170,8 @@ bool Foam::fileFormats::NASedgeFormat::read
             // GRID*      126   0 -5.55999875E+02 -5.68730474E+02
             // *         2.14897901E+02
 
+            // Cannot be long format and free format at the same time!
+
             label index = readLabel(nextNasField(line, linei, 16)); // 8-24
             (void) nextNasField(line, linei, 16); // 24-40
             scalar x = readNasScalar(nextNasField(line, linei, 16)); // 40-56
@@ -157,8 +191,8 @@ bool Foam::fileFormats::NASedgeFormat::read
             (void) nextNasField(line, linei, 8); // 0-8
             scalar z = readNasScalar(nextNasField(line, linei, 16)); // 8-16
 
-            pointId.append(index);
-            dynPoints.append(point(x, y, z));
+            pointId.push_back(index);
+            dynPoints.emplace_back(x, y, z);
         }
     }
 

src/optimisation/adjointOptimisation/adjoint/solvers/adjointSolvers/incompressible/incompressibleAdjointSolver/incompressibleAdjointSolver.C

@@ -420,19 +420,21 @@ void Foam::incompressibleAdjointSolver::accumulateBCSensitivityIntegrand
         fvPatchVectorField& Uab = UaBoundary[patchI];
         if (isA<adjointVectorBoundaryCondition>(Uab))
         {
-            const fvPatch& patch = mesh_.boundary()[patchI];
-            tmp<vectorField> tnf = patch.nf();
-            const scalarField& magSf = patch.magSf();
+            tmp<tensorField> dxdbMult =
+                refCast<adjointVectorBoundaryCondition>(Uab).dxdbMult();
+            if (dxdbMult)
+            {
+                const fvPatch& patch = mesh_.boundary()[patchI];
+                tmp<vectorField> tnf = patch.nf();
+                const scalarField& magSf = patch.magSf();
 
-            tmp<vectorField> DvDbMult =
-                nuEffBoundary[patchI]*(Uab.snGrad() + (gradUabf[patchI] & tnf))
-    //        - (nf*pa.boundaryField()[patchI])
-              + adjointTurbulence().adjointMomentumBCSource()[patchI];
-            bcDxDbMult()[patchI] +=
-                (
-                    DvDbMult
-                  & refCast<adjointVectorBoundaryCondition>(Uab).dxdbMult()
-                )*magSf*dt;
+                tmp<vectorField> DvDbMult =
+                    nuEffBoundary[patchI]
+                   *(Uab.snGrad() + (gradUabf[patchI] & tnf))
+        //        - (nf*pa.boundaryField()[patchI])
+                  + adjointTurbulence().adjointMomentumBCSource()[patchI];
+                bcDxDbMult()[patchI] += (DvDbMult & dxdbMult())*magSf*dt;
+            }
         }
     }
 }

src/surfMesh/surfaceFormats/nas/NASsurfaceFormat.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2015 OpenFOAM Foundation
-    Copyright (C) 2017-2023 OpenCFD Ltd.
+    Copyright (C) 2017-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -183,8 +183,6 @@ bool Foam::fileFormats::NASsurfaceFormat<Face>::read
 
     while (is.good())
     {
-        // Parsing position within current line
-        std::string::size_type linei = 0;
         is.getLine(line);
 
         if (NASCore::debug > 1) Info<< "Process: " << line << nl;
@@ -319,16 +317,30 @@ bool Foam::fileFormats::NASsurfaceFormat<Face>::read
             }
         }
 
+
+        // Parsing position within current line
+        std::string::size_type linei = 0;
+
+        // Is free format if line contains a comma
+        const bool freeFormat = line.contains(',');
+
         // First word (column 0-8)
         const word cmd(word::validate(nextNasField(line, linei, 8)));
 
         if (cmd == "CTRIA3")
         {
-            label elemId = readLabel(nextNasField(line, linei, 8)); // 8-16
-            label groupId = readLabel(nextNasField(line, linei, 8)); // 16-24
-            const auto a = readLabel(nextNasField(line, linei, 8)); // 24-32
-            const auto b = readLabel(nextNasField(line, linei, 8)); // 32-40
-            const auto c = readLabel(nextNasField(line, linei, 8)); // 40-48
+            // Fixed format:
+            //  8-16 : element id
+            // 16-24 : group id
+            // 24-32 : vertex
+            // 32-40 : vertex
+            // 40-48 : vertex
+
+            label elemId = readLabel(nextNasField(line, linei, 8, freeFormat));
+            label groupId = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto a = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto b = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto c = readLabel(nextNasField(line, linei, 8, freeFormat));
 
             // Convert groupId into zoneId
             const auto iterZone = zoneLookup.cfind(groupId);
@@ -357,12 +369,20 @@ bool Foam::fileFormats::NASsurfaceFormat<Face>::read
         }
         else if (cmd == "CQUAD4")
         {
-            label elemId = readLabel(nextNasField(line, linei, 8)); // 8-16
-            label groupId = readLabel(nextNasField(line, linei, 8)); // 16-24
-            const auto a = readLabel(nextNasField(line, linei, 8)); // 24-32
-            const auto b = readLabel(nextNasField(line, linei, 8)); // 32-40
-            const auto c = readLabel(nextNasField(line, linei, 8)); // 40-48
-            const auto d = readLabel(nextNasField(line, linei, 8)); // 48-56
+            // Fixed format:
+            //  8-16 : element id
+            // 16-24 : group id
+            // 24-32 : vertex
+            // 32-40 : vertex
+            // 40-48 : vertex
+            // 48-56 : vertex
+
+            label elemId = readLabel(nextNasField(line, linei, 8, freeFormat));
+            label groupId = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto a = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto b = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto c = readLabel(nextNasField(line, linei, 8, freeFormat));
+            const auto d = readLabel(nextNasField(line, linei, 8, freeFormat));
 
             // Convert groupId into zoneId
             const auto iterZone = zoneLookup.cfind(groupId);
@@ -406,11 +426,21 @@ bool Foam::fileFormats::NASsurfaceFormat<Face>::read
         }
         else if (cmd == "GRID")
         {
-            label index = readLabel(nextNasField(line, linei, 8)); // 8-16
-            (void) nextNasField(line, linei, 8); // 16-24
-            scalar x = readNasScalar(nextNasField(line, linei, 8)); // 24-32
-            scalar y = readNasScalar(nextNasField(line, linei, 8)); // 32-40
-            scalar z = readNasScalar(nextNasField(line, linei, 8)); // 40-48
+            // Fixed (short) format:
+            //  8-16 : point id
+            // 16-24 : coordinate system (not supported)
+            // 24-32 : point x coordinate
+            // 32-40 : point y coordinate
+            // 40-48 : point z coordinate
+            // 48-56 : displacement coordinate system (optional, unsupported)
+            // 56-64 : single point constraints (optional, unsupported)
+            // 64-70 : super-element id (optional, unsupported)
+
+            label index = readLabel(nextNasField(line, linei, 8, freeFormat));
+            (void) nextNasField(line, linei, 8, freeFormat);
+            scalar x = readNasScalar(nextNasField(line, linei, 8, freeFormat));
+            scalar y = readNasScalar(nextNasField(line, linei, 8, freeFormat));
+            scalar z = readNasScalar(nextNasField(line, linei, 8, freeFormat));
 
             pointId.push_back(index);
             dynPoints.emplace_back(x, y, z);
@@ -423,6 +453,8 @@ bool Foam::fileFormats::NASsurfaceFormat<Face>::read
             // GRID*      126   0 -5.55999875E+02 -5.68730474E+02
             // *         2.14897901E+02
 
+            // Cannot be long format and free format at the same time!
+
             label index = readLabel(nextNasField(line, linei, 16)); // 8-24
             (void) nextNasField(line, linei, 16); // 24-40
             scalar x = readNasScalar(nextNasField(line, linei, 16)); // 40-56
@@ -452,7 +484,10 @@ bool Foam::fileFormats::NASsurfaceFormat<Face>::read
             // have the 'weird' format where the immediately preceeding
             // comment contains the information.
 
-            label groupId = readLabel(nextNasField(line, linei, 8)); // 8-16
+            // Fixed format:
+            //  8-16 : pshell id
+
+            label groupId = readLabel(nextNasField(line, linei, 8, freeFormat));
 
             if (lastComment.size() > 1 && !nameLookup.contains(groupId))
             {

src/surfMesh/writers/nastran/nastranSurfaceWriter.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2012-2016 OpenFOAM Foundation
-    Copyright (C) 2015-2022 OpenCFD Ltd.
+    Copyright (C) 2015-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -307,16 +307,10 @@ void Foam::surfaceWriters::nastranWriter::writeGeometry
 Foam::surfaceWriters::nastranWriter::nastranWriter()
 :
     surfaceWriter(),
-    writeFormat_(fieldFormat::SHORT),
-    fieldMap_(),
+    writeFormat_(fieldFormat::FREE),
     commonGeometry_(false),
-    separator_()
-{
-    // if (writeFormat_ == fieldFormat::FREE)
-    // {
-    //     separator_ = ",";
-    // }
-}
+    separator_(",")  // FREE format
+{}
 
 
 Foam::surfaceWriters::nastranWriter::nastranWriter
@@ -331,12 +325,10 @@ Foam::surfaceWriters::nastranWriter::nastranWriter
         (
             "format",
             options,
-            fieldFormat::LONG
+            fieldFormat::FREE
         )
     ),
-    fieldMap_(),
-    commonGeometry_(options.getOrDefault("commonGeometry", false)),
-    separator_()
+    commonGeometry_(options.getOrDefault("commonGeometry", false))
 {
     if (writeFormat_ == fieldFormat::FREE)
     {

src/surfMesh/writers/nastran/nastranSurfaceWriter.H

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2012-2016 OpenFOAM Foundation
-    Copyright (C) 2015-2022 OpenCFD Ltd.
+    Copyright (C) 2015-2024 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -33,13 +33,13 @@ Description
     The formatOptions for nastran:
     \table
         Property    | Description                           | Reqd | Default
-        fields      | Field pairs for PLOAD2/PLOAD4         | yes |
-        format      | Nastran format (short/long/free)      | no  | long
+        format      | Nastran format (short/long/free)      | no  | free
         scale       | Output geometry scaling               | no  | 1
         transform   | Output coordinate transform           | no  |
         fieldLevel  | Subtract field level before scaling   | no  | empty dict
         fieldScale  | Output field scaling                  | no  | empty dict
         commonGeometry | use separate geometry files        | no  | false
+        fields      | Field pairs for PLOAD2/PLOAD4         | yes |
     \endtable
 
     For example,
@@ -48,13 +48,6 @@ Description
     {
         nastran
         {
-            // OpenFOAM field name to NASTRAN load types
-            fields
-            (
-                (pMean  PLOAD2)
-                (p      PLOAD4)
-            );
-
             format  free;     // format type
 
             scale   1000;     // [m] -> [mm]
@@ -62,6 +55,13 @@ Description
             {
                "p.*"   0.01;  // [Pa] -> [mbar]
             }
+
+            // OpenFOAM field name to NASTRAN load types
+            fields
+            (
+                (pMean  PLOAD2)
+                (p      PLOAD4)
+            );
         }
     }
     \endverbatim
@@ -93,7 +93,6 @@ Description
 
 Note
     Output variable scaling does not apply to integer types such as Ids.
-    Field pairs default to PLOAD2 for scalars and PLOAD4 for vectors etc.
 
 SourceFiles
     nastranSurfaceWriter.C
@@ -221,10 +220,10 @@ public:
 
     // Constructors
 
-        //- Default construct. Default SHORT format
+        //- Default construct. Default FREE format
         nastranWriter();
 
-        //- Construct with some output options. Default LONG format
+        //- Construct with some output options. Default FREE format
         explicit nastranWriter(const dictionary& options);
 
         //- Construct from components