{"id":426699,"date":"2025-03-24T21:00:48","date_gmt":"2025-03-24T21:00:48","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-icepak-attaching-udf\/"},"modified":"2025-04-02T02:56:34","modified_gmt":"2025-04-02T02:56:34","slug":"ansys-icepak-attaching-udf","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-icepak-attaching-udf\/","title":{"rendered":"ANSYS Icepak Attaching UDF"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;&lt;p&gt;&lt;p&gt;Hi, I am currently doing a senior design project with a system integrating four fans for cooling. I am trying to attach a UDF to each fan, but I am getting an error saying &#8220;more than one curve.&#8221; In addition, what should I attach within parallel settings specifically for the UDF? Within my code, I feel like the error is caused by having multiple zone IDs in a single UDF. I am fairly new to Icepak and developing UDFs, and I would greatly appreciate it if anyone could help me! &nbsp;&lt;\/p&gt;&lt;p&gt; &lt;\/p&gt;&lt;div&gt; &lt;\/div&gt;&lt;p&gt; &lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/03\/24-03-2025-1742850014-Capture.PNG\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/03\/24-03-2025-1742850030-Capture2.PNG\" alt=\"\" \/>&lt;\/p&gt;&lt;\/p&gt;&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-426699","topic","type-topic","status-publish","hentry","topic-tag-ansys-icepak","topic-tag-udf","topic-tag-udferror"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi, I am currently doing a senior design project with a system integrating four fans for cooling. 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