Hi It is possible to access source terms of k and epsilon equation in UDF. Since I would like to make countour plots of them. Pratap

C_K(c,t) and C_D(c,t). Although, you can of course make a contour plot from the standard GUI.

Sorry, you said source term. I thought you mean't the actual value of k and e. If you make a UDF with a DEFINE_SOURCE term you can save the value you are returning to a C_UDMI and then use that to plot your contour. Make sure you turn UDM on in the fluent GUI.

Next time I should take the time to read the post.

I do not define any source DEFINE_SOURCE. I would like to access the souce terms of the kepsilon equation which fluent is solving. I have another question where can I have tutorial(pdf file) for PREMIXED Turbulent combustion using zimont model. Pratap

If you are specifying a source term of K and epsilon in the Fluent GUI, it has to have a constant value or one from a DEFINE_SOURCE. If it is a constant value then you can simply slip that into your UDF using a #define (although the contours will look very plain) If your source term varies, then you can put it in as a DEFINE_SOURCE and use save the value to a UDMI and use that to plot the contours

I think you are confuded with what I am asking. Let us say I want to "convective term of k-epsilon equation i.e term B in equation below " and plot its contours.Pratap

A+B=C+D A=unsteady B=convetcive C=Diffusive D=source term

I understand now, it was when you said "possible to access source terms of k and epsilon", I thought you meant D as in your previous post. I am afraid that I don't know how to extract the value. I don't believe that you can get it in the UDF directly.

To create the value manually you need to extract the second derivative of k. I was trying to do a similar thing and posted a while ago, and never recieved a satisfactory answer. I would suggest e-mailing the fluent support to see what they have to say.