Dear colleagues
I have used a fine mesh for simulating hydrodynamic of a case due to its high gradients but my heat transfer network can be coarser for lowering computation cost.
for this goal I have created a udf in which every 100 nodes are assumed as a new mesh(another equations will be solved for them) . flux on its imaginary faces( which has no meaning for software) is computed and variables of network of cells will be averaged.
now I want to define for fluent to solve heat equations 1 time for this zone.
Do anybody have an idea for this work?
It should be noted that I've seen this work as hybrid cfd/compartment modelling
Dear Mahdi, it's a long time since a worked in a similar field and I don't follow some of your details. However since no-one else has offered an answer yet I would like to suggest you look at the multigrid method, if you are not already familiar with it. It uses a combination of fine and coarse grids that simultaneously maximises accuracy and efficiency in CFD.
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