While reading an articles on Shock capturing schemes for high speed flow, i encounter the jargon "dissipative term" several times. Can you please explain me what does it mean particularly? Which term in governing equations represent it? It will also be helpful if you can suggest some literature to be familiar with the jargon used in CFD?
Hello there. Dissipative term in your case is most likely the viscous term, the one with the Laplacian. It corresponds to the dissipation of energy due to viscosity. I can recommend reading Computational Methods for Fluid Dynamics by Ferziger and Peric to make yourself familiar with the subject.
Thanks for your response. On that paper, he was discussing some drawbacks of approximate Riemann solver and the reasons of these drawbacks were attributed to dissipative terms in mass flux. Here i have provided you the paper.
Article Shock capturing schemes with local mesh adaptation for high ...
Viscous dissipation in general is the irreversible conversion of mechanical energy to internal energy (heating) due to viscosity. See this link for more details: http://rheology.tripod.com/z07.13.pdf
I wasn't able to view the entire paper, but depending on the solver that is implemented, you may see the method add dissipation to your solution. This may be unavoidable.
In cell-centred formulation there is so-called Rhie-Chow dissipation in order to avoid velocity-pressure de-coupling.
http://arc.aiaa.org/doi/abs/10.2514/3.8284
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