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July 13, 2014, 01:26 |
converge problem
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#1 |
New Member
mahdi
Join Date: May 2014
Posts: 14
Rep Power: 11 |
hi
my numerical simulation by ansys fluent15 .but i can not get a good simulation.i can not get Static pressure distributions along the central symmetrical line of the scramjet isolator with a constant cross sectional area for back pressures 100 kp. my domain is a quarter of the original geometry.in my domain Using tow symmetry boundary conditions and tow wall boundary condition mesh is 69*69*261 in (Depth,Height and length, respectively) simulation Boundary conditions and solution setup is: solver=pressure-based Steady State model: standard k- epsilon energy=on near wall treatment:standard wall function material:air ideal gas boundary condition: inlet pressure inlet Total Pressure = 196000 [Pa Static Pressure = 25050 [Pa thermal=300 k : outlet pressure outlet =100 [kPa thermal=300 k wall Adiabatic No Slip Wall solution method= pressure-velocity copling sheme=coupled spatial discrezation=secund order upwind and enable pseudo transint solution control pseudo transint explicet relaxtion factor= pressure=0.5 momentume=0.5 density=0.5 energy=0.75 turbulent kinitic energy and dissipation rate=0.9 solution initialization=hybrid my rsedual not converged Please see the attached images. Please Guidance me. Thank you |
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