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#1 |
New Member
OscarD
Join Date: Sep 2011
Posts: 4
Rep Power: 15 ![]() |
Hi,
I've been trying to set initial values of pressure and temperature in a simple 2d-axisymmetric geometry that generates an enclosed volume, with no inlet/outlet for fluid, steady state. I got the initialization of all the cells' temperature as I wanted by using DEFINE_INIT (coaxial values of same value ![]() ![]() Am I forgetting to set something within the UDF or in the FLUENT case? Thanks in advance for any help related!!! PS. The 'complex' code I'm using (just omitted the definition and value of the pX and tY constants) ************************************************** ******** #include "udf.h" DEFINE_INIT(init_temp_press,d) { cell_t c; Thread *t; real xc[ND_ND] thread_loop_c(t,d) { begin_c_loop_all(c,t) { C_CENTROID(xc,c,t); if(xc[1] < 4.7e-4) C_T(c,t) = t1*pow(xc[1],9.) + t2*pow(xc[1],8.) + t3*pow(xc[1],7.) + t4*pow(xc[1],6.) + t5*pow(xc[1],5.) + t6*pow(xc[1],4.) + t7*pow(xc[1],3.) + t8*pow(xc[1],2.) + t9*xc[1] + t10; else C_T(c,t) = 293; if(xc[1] < 4e-4) C_P(c,t) = p1*pow(xc[1],8.) + p2*pow(xc[1],7.) + p3*pow(xc[1],6.) + p4*pow(xc[1],5.) + p5*pow(xc[1],4.) + p6*pow(xc[1],3.) + p7*pow(xc[1],2.) + p8*xc[1] + p9; else C_P(c,t) = 6800; end_c_loop_all(c,t) } } } ************************************************** ****** |
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#2 |
New Member
zhang guoqing
Join Date: May 2011
Posts: 10
Rep Power: 15 ![]() |
Dear Sir:
Recently I have met the same problem as yours. Have you solved it? Could you tell me the steps to use this UDF in Fluent? Thank you so much for your help. Yours Zhang |
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Tags |
initial conditions, pressure, udf |
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