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Merge branch 'master' of /home/noisy3/OpenFOAM/OpenFOAM-dev
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@ -29,6 +29,36 @@ Description
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Basic sub-grid obstacle flame-wrinking enhancement factor model.
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Details supplied by J Puttock 2/7/06.
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<b> Sub-grid flame area generation <\b>
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\f$ n = N - \hat{\dwea{\vec{U}}}.n_{s}.\hat{\dwea{\vec{U}}} \f$
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\f$ n_{r} = \sqrt{n} \f$
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where:
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\f$ \hat{\dwea{\vec{U}}} = \dwea{\vec{U}} / \vert \dwea{\vec{U}}
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\vert \f$
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\f$ b = \hat{\dwea{\vec{U}}}.B.\hat{\dwea{\vec{U}}} / n_{r} \f$
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where:
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\f$ B \f$ is the file "B".
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\f$ N \f$ is the file "N".
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\f$ n_{s} \f$ is the file "ns".
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The flame area enhancement factor \f$ \Xi_{sub} \f$ is expected to
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approach:
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\f[
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\Xi_{{sub}_{eq}} =
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1 + max(2.2 \sqrt{b}, min(0.34 \frac{\vert \dwea{\vec{U}}
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\vert}{{\vec{U}}^{'}}, 1.6)) \times min(\frac{n}{4}, 1)
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\f]
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SourceFiles
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basicSubGrid.C
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@ -25,10 +25,28 @@ License
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Class
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basicSubGrid
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Description
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Basic sub-grid obstacle flame-wrinking generation rate coefficient model.
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Details supplied by J Puttock 2/7/06.
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\f$ G_{sub} \f$ denotes the generation coefficient and it is given by
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\f[
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G_{sub} = k_{1} /frac{\vert \dwea{\vec{U}} \vert}{L_{obs}}
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\frac{/Xi_{{sub}_{eq}}-1}{/Xi_{sub}}
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\f]
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and the removal:
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\f[ - k_{1} /frac{\vert \dwea{\vec{U}} \vert}{L_{sub}}
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\frac{\Xi_{sub}-1}{\Xi_{sub}} \f]
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Finally, \f$ G_{sub} \f$ is added to generation rate \f$ G_{in} \f$
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due to the turbulence.
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SourceFiles
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basicSubGrid.C
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@ -29,6 +29,50 @@ Description
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Basic sub-grid obstacle drag model.
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Details supplied by J Puttock 2/7/06.
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<b> Sub-grid drag term <\b>
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The resistance term (force per unit of volume) is given by:
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\f[
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R = -\frac{1}{2} \rho \vert \dwea{\vec{U}} \vert \dwea{\vec{U}}.D
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\f]
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where:
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\f$ D \f$ is the tensor field "CR" in \f$ m^{-1} \f$
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This is term is treated implicitly in UEqn.H
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<b> Sub-grid turbulence generation <\b>
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The turbulence source term \f$ G_{R} \f$ occurring in the
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\f$ \kappa-\epsilon \f$ equations for the generation of turbulence due
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to interaction with unresolved obstacles :
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\f$ G_{R} = C_{s}\beta_{\nu}
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\mu_{eff} A_{w}^{2}(\dwea{\vec{U}}-\dwea{\vec{U}_{s}})^2 + \frac{1}{2}
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\rho \vert \dwea{\vec{U}} \vert \dwea{\vec{U}}.T.\dwea{\vec{U}} \f$
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where:
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\f$ C_{s} \f$ = 1
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\f$ \beta_{\nu} \f$ is the volume porosity (file "betav").
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\f$ \mu_{eff} \f$ is the effective viscosity.
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\f$ A_{w}^{2}\f$ is the obstacle surface area per unit of volume
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(file "Aw").
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\f$ \dwea{\vec{U}_{s}} \f$ is the slip velocity and is considered
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\f$ \frac{1}{2}. \dwea{\vec{U}} \f$.
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\f$ T \f$ is a tensor in the file CT.
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The term \f$ G_{R} \f$ is treated explicitly in the \f$ \kappa-\epsilon
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\f$ Eqs in the PDRkEpsilon.C file.
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SourceFiles
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basic.C
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@ -40,7 +84,6 @@ SourceFiles
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#include "PDRDragModel.H"
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#include "XiEqModel.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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@ -26,7 +26,17 @@ Class
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PDRkEpsilon
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Description
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Standard k-epsilon turbulence model.
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Standard k-epsilon turbulence model with additional source terms
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corresponding to PDR basic drag model (basic.H)
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The turbulence source term \f$ G_{R} \f$ appears in the
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\f$ \kappa-\epsilon \f$ equation for the generation of turbulence due to
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interaction with unresolved obstacles.
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In the \f$ \epsilon \f$ equation \f$ C_{1} G_{R} \f$ is added as a source
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term.
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In the \f$ \kappa \f$ equation \f$ G_{R} \f$ is added as a source term.
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SourceFiles
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PDRkEpsilon.C
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@ -27,6 +27,57 @@ Class
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Description
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Base-class for all Xi models used by the b-Xi combustion model.
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See Technical Report SH/RE/01R for details on the PDR modelling.
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Xi is given through an algebraic expression (algebraic.H),
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by solving a transport equation (transport.H) or a fixed value (fixed.H).
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See report TR/HGW/10 for details on the Weller two equations model.
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In the algebraic and transport methods \f$\Xi_{eq}\f$ is calculated in
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similar way. In the algebraic approach, \f$\Xi_{eq}\f$ is the value used in
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the \f$ b \f$ transport equation.
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\f$\Xi_{eq}\f$ is calculated as follows:
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\f$\Xi_{eq} = 1 + (1 + 2\Xi_{coeff}(0.5 - \dwea{b}))(\Xi^* - 1)\f$
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where:
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\f$ \dwea{b} \f$ is the regress variable.
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\f$ \Xi^* \f$ is the total equilibrium wrinkling combining the effects
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of the flame inestability and turbulence interaction and is given by
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\f[
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\Xi^* = \frac {R}{R - G_\eta - G_{in}}
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\f]
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where:
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\f$ G_\eta \f$ is the generation rate of wrinkling due to turbulence
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interaction.
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\f$ G_{in} = \kappa \rho_{u}/\rho_{b} \f$ is the generation
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rate due to the flame inestability.
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By adding the removal rates of the two effects:
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\f[
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R = G_\eta \frac{\Xi_{\eta_{eq}}}{\Xi_{\eta_{eq}} - 1}
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+ G_{in} \frac{\Xi_{{in}_{eq}}}{\Xi_{{in}_{eq}} - 1}
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\f]
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where:
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\f$ R \f$ is the total removal.
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\f$ G_\eta \f$ is a model constant.
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\f$ \Xi_{\eta_{eq}} \f$ is the flame wrinkling due to turbulence.
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\f$ \Xi_{{in}_{eq}} \f$ is the equilibrium level of the flame wrinkling
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generated by inestability. It is a constant (default 2.5).
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SourceFiles
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XiModel.C
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@ -51,6 +102,8 @@ namespace Foam
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Class XiModel Declaration
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\*---------------------------------------------------------------------------*/
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class XiModel
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{
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@ -28,6 +28,33 @@ Class
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Description
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Laminar flame speed obtained from the SCOPE correlation.
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Seven parameters are specified in terms of polynomial functions of
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stoichiometry. Two polynomials are fitted, covering different parts of the
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flammable range. If the mixture is outside the fitted range, linear
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interpolation is used between the extreme of the polynomio and the upper or
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lower flammable limit with the Markstein number constant.
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Variations of pressure and temperature from the reference values are taken
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into account through \f$ pexp \f$ and \f$ texp \f$
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The laminar burning velocity fitting polynomial is:
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\f$ Su = a_{0}(1+a_{1}x+K+..a_{i}x^{i}..+a_{6}x^{6}) (p/p_{ref})^{pexp}
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(T/T_{ref})^{texp} \f$
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where:
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\f$ a_{i} \f$ are the polinomial coefficients.
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\f$ pexp \f$ and \f$ texp \f$ are the pressure and temperature factors
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respectively.
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\f$ x \f$ is the equivalence ratio.
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\f$ T_{ref} \f$ and \f$ p_{ref} \f$ are the temperature and pressure
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references for the laminar burning velocity.
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SourceFiles
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SCOPELaminarFlameSpeed.C
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@ -50,9 +50,9 @@ then
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*/applications/solvers/*.C | */applications/utilities/*.C )
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awkScript=$WM_PROJECT_DIR/bin/tools/doxyFilt-top.awk
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;;
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*/applications/solvers/*.H | */applications/utilities/*.H )
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awkScript=$WM_PROJECT_DIR/bin/tools/doxyFilt-ignore.awk
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;;
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# */applications/solvers/*.H | */applications/utilities/*.H )
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# awkScript=$WM_PROJECT_DIR/bin/tools/doxyFilt-ignore.awk
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# ;;
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esac
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awk -f $awkScript $1 | \
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@ -14,6 +14,16 @@
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# Project related configuration options
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#---------------------------------------------------------------------------
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#--------------------------------
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# PATH FOR OPEN CFD LATEX MACROS
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#-------------------------------
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@INLUDE_PATH = $(TEXINPUTS)
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@INLUDE_PATH += $(BIBINPUTS)
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@INLUDE_PATH += $(BSTINPUTS)
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# This tag specifies the encoding used for all characters in the config file that
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# follow. The default is UTF-8 which is also the encoding used for all text before
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# the first occurrence of this tag. Doxygen uses libiconv (or the iconv built into
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@ -481,6 +491,8 @@ INPUT = $(WM_PROJECT_DIR)/src \
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$(WM_PROJECT_DIR)/applications/utilities \
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$(WM_PROJECT_DIR)/applications/solvers
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# This tag can be used to specify the character encoding of the source files that
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# doxygen parses. Internally doxygen uses the UTF-8 encoding, which is also the default
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# input encoding. Doxygen uses libiconv (or the iconv built into libc) for the transcoding.
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@ -536,7 +548,9 @@ EXCLUDE_SYMBOLS =
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# directories that contain example code fragments that are included (see
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# the \include command).
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EXAMPLE_PATH =
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EXAMPLE_PATH = $(TEXINPUTS) \
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$(BIBINPUTS) \
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$(BSTINPUTS)
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# If the value of the EXAMPLE_PATH tag contains directories, you can use the
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# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
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@ -824,7 +838,8 @@ PAPER_TYPE = a4wide
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# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
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# packages that should be included in the LaTeX output.
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EXTRA_PACKAGES =
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EXTRA_PACKAGES = conditionalEqns finiteVolume algorithmic tensorCommon \
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tensorOperator tensorEquation
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# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
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# the generated latex document. The header should contain everything until
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@ -187,7 +187,7 @@ case MPICH-GM:
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setenv FOAM_MPI_LIBBIN $FOAM_LIBBIN/mpich-gm
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breaksw
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case MPICH-GM:
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case HPMPI:
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setenv MPI_HOME /opt/hpmpi
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setenv MPI_ARCH_PATH $MPI_HOME
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setenv MPICH_ROOT=$MPI_ARCH_PATH
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@ -49,7 +49,7 @@ Foam::laplaceFilter::laplaceFilter(const fvMesh& mesh, scalar widthCoeff)
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(
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IOobject
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(
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"anisotropicFilterCoeff",
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"laplaceFilterCoeff",
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mesh.time().timeName(),
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mesh
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),
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@ -70,7 +70,7 @@ Foam::laplaceFilter::laplaceFilter(const fvMesh& mesh, const dictionary& bd)
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(
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IOobject
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(
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"anisotropicFilterCoeff",
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"laplaceFilterCoeff",
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mesh.time().timeName(),
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mesh
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),
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