can anyone please tell me what is the macro of liquid phase viscosity
I am modelling gas-liquid phase problem in fluent and trying to use UDF for drag co-efficient, in this case i want to particularly define viscosity for liquid phase so does anyone know macro for this, please help
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Hi, To define the viscosity of the liquid phase you can do something like: /*If the cell and cell thread are not passed in the subrountine, you need to get the cell thread eg for DPM Drag DEFINE_DPM_DRAG(UDFdrag,Re,p) where the Tracked Particle p is passed you may do it like this cell = P_CELL(p); cell_thread = THREAD_SUB_THREAD(P_CELL_THREAD(p), PHASE_DOMAIN_INDEX (Get_Domain(ID_OF_LIQUID_PHASE))); You can get ID_OF_LIQUID_PHASE from the phases GUI, may be 3 What is important is to get cell and cell_thread, pointing to the phase you desire */ viscosity_lam=C_MU_L(cell,cell_thread) //Laminar Viscosity viscosity_turb=C_MU_T(cell,cell_thread) //Turbulent Viscosity viscosity_eff=C_MU_EFF(cell,cell_thread) //Effective Viscosity |
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