Learning Forum

[K]

The UDF customization manual only describes how to send integers, reals, or strings between host and node processes. Is there a way to send Thread and cell_t datatypes? I have begin_f_loop nested inside a begin_c_loop(c,t), and I would like to send c and t to the nodes doing the begin_f_loop.

[Rob]

https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v231/en/flu_udf/flu_udf_ChapParallelUDFUsage.html   

[K]

As stated in my original post, I looked through the customization manual and only found ways to send integers, real, or strings, but couldn’t find what I was after: how to send thread and cell_t datatypes.

I am trying to pass cell thread and cell index information into a face loop to do the following in parallel:

begin_c_loop(c,tc)
{
    begin_f_loop(f,tf)
    {
        /* Computation involving f, tf, c, and tc */
    }
}

My understanding is that cell_t is just an integer data type, so my guess is I could just pass c by using one of the message passing commands for integers. But how would I pass the cell thread tc?

[Rob]

A UDF is an extra bit of coding for Fluent. It'll take data as needed (and defined) and do something. Don't worry about where the calculation is done, just worry about getting the RP_HOST and RP_NODE bits right.