[HRSD]

Hi Dears,
i wrote a UDF which can see in below, in this UDF, after calculating, UDMI value not saved and is zero. please help me for solving this problem.
thank.

begin_c_loop(c,t)
{
inst_tabs = C_T(c,t);
inst_rdot = aprexp * exp((-acte) / (ugc * inst_tabs));
inst_mdot = frho * burn_area * inst_rdot;
C_PROFILE(c,t,i) = inst_mdot;
sum_inst_tabs += inst_tabs;
C_UDMI(c,t,0) = inst_rdot;
}
end_c_loop(c,t)

[AlexanderZ]

if each variable here is defined well no problems should exist

inst_rdot = aprexp * exp((-acte) / (ugc * inst_tabs));

[HRSD]

Originally Posted by AlexanderZ

if each variable here is defined well no problems should exist

inst_rdot = aprexp * exp((-acte) / (ugc * inst_tabs));

thanks for your reply, each variable here is defined well and this udf used to define macro and inst_rdot value write in console in right amount, but value in UDMI is zero.
thank you.

[Siba11]

You have to allocate a memory location inside ansys fluent before you can call C_UDMI macro. See if this helps.

[HRSD]

Originally Posted by Siba11

You have to allocate a memory location inside ansys fluent before you can call C_UDMI macro. See if this helps.

Hi,
yes, i allocate a memory location inside ansys fluent before compiling udf, but don't save anything.
thank you.