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UDF for PMV and PPD

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Old   September 18, 2017, 16:16
Post UDF for PMV and PPD
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Lucas Barreto
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Hi guys,

I am simulating the flow inside of an aircraft cabin and and I need to evaluate the passenger's thermal comfort and in order to do that I need to calculate the Fanger's parameters: PMV (Predicted Mean Vote) and the PPD (Predicted Percentage Dissatisfied). The theory behind the calculation is pretty straight forward, however I am out of practice with my C programming, so I am having difficulties creating my UDF file, Does anyone here have this routine and would be willing to share it? I have looked on other threads and haven't found it.

Thanks in advance
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Old   September 19, 2017, 10:54
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Hello again guys,

I am developing a C code for the PMV and PPD calculation, can anyone take a look at it and see if there is anything wrong with it? I haven't had the opportunity to test it yet, I am still stuck on a previous part of the simulation.

Thanks in advance.
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File Type: c Thermal_comfort.c (2.6 KB, 126 views)
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Old   September 27, 2017, 06:10
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This file needs a lot of tidying before it will compile:
-- Statements need to end with semicolon.
-- The braces {...} need to match up. Indentation is decorative only. (You currently seem to think that braces are needed outside an if...else... structure, and that is wrong. You want "if(condition) {statement; statement;} else {statement; statement;}")
-- x**4 is not C; you probably want POW(x,4).

Please do not expect us to fix this kind of thing for you.
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Old   September 27, 2017, 07:19
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Quote:
Originally Posted by obscureed View Post
This file needs a lot of tidying before it will compile:
-- Statements need to end with semicolon.
-- The braces {...} need to match up. Indentation is decorative only. (You currently seem to think that braces are needed outside an if...else... structure, and that is wrong. You want "if(condition) {statement; statement;} else {statement; statement;}")
-- x**4 is not C; you probably want POW(x,4).

Please do not expect us to fix this kind of thing for you.
Thank you for the insight, I have already fixed the code with the tips that you gave. I am still revising the C programming structure, I am having a hard time understanding the loops especifically used on this library (udf.h) But I am working on it.

Thank you again.
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Old   February 7, 2019, 06:44
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hasna
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Currently, I am experiencing the same problem I would be grateful if someone can help me to overcome this problem.
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fluent - udf, pmv, post processing, ppd, thermal comfort

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