Re Stress UU equation vs C_RUU(c,t) ?

daniel sin

Dear Sir,

Hi. all. I am struggling with Reynolds stresses, i want to get Re Stress in k-e model. fist of all, I conducted in Reynold Turblence model because of easy to get the Reynold UU stress in 2d model.

manual : 11.2.3 Boussinesq Approach vs. Reynolds Stress Transport Models, there is the Reynolds stress equation.

Then, I compared equation of Reynolds Stresses with C_RUU(c,t) in Reynolds Turbulence model.

Unfortunatly, the result is different. Do you think what the problem is?

The maxium is 8.32e+1 (Re Stress equation) and 1.34e+2 (C_RUU(c,t) respectively.

Thank you. Sincerely, Daniel.

#include "udf.h" DEFINE_ADJUST(s_stress_adjust,d) { Thread *t; cell_t c; thread_loop_c(t,d) {

begin_c_loop(c,t)

C_UDMI(c,t,0) = -(2*C_MU_T(c,t)*C_DUDX(c,t)-(2.0/3.0)*(C_R(c,t)*C_K(c,t)+C_MU_T(c,t)*C_DUDX(c,t)));

C_UDMI(c,t,1) = C_RUU(c,t); end_c_loop(c,t) } }