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The temperature equation in compressibleInterFoam is derived from the phase
total internal energy equations including the kinetic energy source terms.
While this formulation handles pressure loss more accurately the kinetic energy
source terms can cause numerical problems and more likely to induce negative
temperatures in regions where the pressure drops rapidly. For such cases it may
be beneficial to solve a temperature equation derived from the phase internal
energy equations, i.e. without the kinetic energy source terms which is now
selectable by setting the optional totalInternalEnergy entry in
constant/phaseProperties to false:
totalInternalEnergy false;
When this entry is omitted the total energy form is used providing
backward-compatibility.
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About OpenFOAM
OpenFOAM is a free, open source computational fluid dynamics (CFD) software package released by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.
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