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Difference Between UDF and Expressions in Thermal Comfort Evaluation? |
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April 29, 2019, 00:37 |
Difference Between UDF and Expressions in Thermal Comfort Evaluation?
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#1 |
New Member
Join Date: Jan 2019
Location: Jakarta, Indonesia
Posts: 7
Rep Power: 7 |
Good day,
I am conducting evaluation of cabin thermal comfort inside passenger bus using PMV equation from ISO 7730 standard. At first I'm gonna use UDF but a friend of mine told me that I can use expressions inside the Fluent post-processing program. However, I'm not sure what are the differences between those two in evaluating thermal comfort. Is it okay if I use expressions instead of UDF? What are the differences between those two? |
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April 29, 2019, 04:03 |
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#2 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 |
Fluent post-processing program means post processing
UDF may influence (or may not) solution. If your goal is a combination of variables, which are calculated by default -> you may use expression instead of UDF best regards |
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May 11, 2019, 00:05 |
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#3 |
New Member
Join Date: Jan 2019
Location: Jakarta, Indonesia
Posts: 7
Rep Power: 7 |
Dear AlexanderZ, thank you for the explanation
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March 27, 2020, 16:13 |
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#4 |
New Member
Mohammed Khan
Join Date: Jan 2020
Posts: 4
Rep Power: 6 |
Hi..
Actually, I too need to work on the similar analysis, (thermal comfort). I got one extension(of thermal comfort) from Ansys website, unfortunately that isn't working out. Can you suggest me about the expression thing. I'm new to Ansys fluent, unable to catch up.. Any help, I will be really thankful. Thank you Cheers Mohammed. |
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January 4, 2023, 08:00 |
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#5 | |
New Member
Moe
Join Date: Jul 2021
Posts: 14
Rep Power: 5 |
Quote:
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January 4, 2023, 08:35 |
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#6 |
New Member
Mohammed Khan
Join Date: Jan 2020
Posts: 4
Rep Power: 6 |
Hi.
The extension doesn't work. I finally created custom functions. I investigated PMV, PPD, Pd, Age of Air. All of these using custom functions. Thanks Mohammad Email - aven.farhan@gmail.com |
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January 4, 2023, 09:30 |
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#7 | |
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Moe
Join Date: Jul 2021
Posts: 14
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Quote:
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April 11, 2023, 05:59 |
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#8 | |
New Member
Ho Chi Minh
Join Date: Jul 2022
Posts: 1
Rep Power: 0 |
Quote:
ldhuy.simeon@gmail.com Thank you. |
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Tags |
expressions, pmv index, post-processing, thermal comfort, udf |
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