{"id":166804,"date":"2022-02-28T05:46:16","date_gmt":"2022-02-28T05:46:16","guid":{"rendered":"\/forum\/forums\/topic\/temperature-initialization-issue\/"},"modified":"2022-03-01T13:15:05","modified_gmt":"2022-03-01T13:15:05","slug":"temperature-initialization-issue","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/temperature-initialization-issue\/","title":{"rendered":"Temperature initialization issue"},"content":{"rendered":"
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Hello,<\/p>\n

I've got a simple UDF that contains the initial temperature values in my domain changing with depth. I have used a scalar and assigned the temperature values in it. Below is a part of my code.<\/p>\n

DEFINE_INIT(temp_profile1, domain)<\/p>\n

{<\/p>\n

  cell_t c;<\/p>\n

  Thread* t;<\/p>\n

  cell_t c0;<\/p>\n

  Thread* t0;<\/p>\n

  real xc[ND_ND];<\/p>\n

  real z;<\/p>\n

<\/p>\n<\/p>\n

  thread_loop_c(t, domain)<\/p>\n

  {<\/p>\n

    begin_c_loop_all(c, t)<\/p>\n

    {<\/p>\n

      C_CENTROID(xc, c, t);<\/p>\n

      z = xc[2];<\/p>\n

<\/p>\n<\/p>\n

      if (0 <= z && z <= 7.5)<\/p>\n

        C_UDSI(c, t, 3) = 295.00;<\/p>\n

<\/p>\n<\/p>\n

      else if (7.5 < z && z <= 12)<\/p>\n

        C_UDSI(c, t, 3) = 295.00 – 0.05 * (z – 7.5);<\/p>\n

 else<\/p>\n

        C_UDSI(c, t, 3) = 294.775;<\/p>\n

    }<\/p>\n

    end_c_loop_all(c, t)<\/p>\n

  }<\/p>\n

}<\/p>\n

<\/p>\n<\/p>\n

After I initialize, I expect a temperature value of 295 at top, and a change in the region 7.5-12 m, and a constant 294.775 after that, However, when I view it I get the following. <\/p>\n

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\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-166804","topic","type-topic","status-closed","hentry","topic-tag-initialization","topic-tag-udf-fluent"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t