[gkhokhar]

I'm trying to run a case where I'm modeling combustion in a RAMJET.

There are options for wall heat flux, but I'd also like to use heat generation per unit volume.

This term is often included in the differential form of the energy equation, does SU2 allow a method for specifying this term?

Any help is appreciated.

[bigfootedrockmidget]

We do not have exactly what you are asking for, although addition of general source terms has many applications.

Something like this has been implemented for the radiation model in incompressible flow. There is the config option HEAT_SOURCE, as part of the radiation model:

% Apply a volumetric heat source as a source term (NO, YES) in the form of an ellipsoid (YES, NO)
HEAT_SOURCE = NO
% Value of the volumetric heat source
HEAT_SOURCE_VAL = 1.0E6
% Rotation of the volumetric heat source respect to Z axis (degrees)
HEAT_SOURCE_ROTATION_Z = 0.0
% Position of heat source center (Heat_Source_Center_X, Heat_Source_Center_Y, Heat_Source_Center_Z)
HEAT_SOURCE_CENTER = ( 0.0, 0.0, 0.0 )
% Vector of heat source radii (Heat_Source_Radius_A, Heat_Source_Radius_B, Heat_Source_Radius_C)
HEAT_SOURCE_AXES = ( 1.0, 1.0, 1.0 )

But if you would like to use something like this in general to create a heat source for the energy equation, you need to add it to the compressible solver as well, and make its implementation independent of the radiation solver.


This method is also available through the python wrapper, if you would like to have many different heat sources available, it is probably best to implement it through the python wrapper.

[bigfootedrockmidget]

You could also use the NEMO solver for it, then you have detailed chemistry available in the compressible solver, but you can not separate the energy source from the chemistry. So it will be much more expensive.