TAGGED: heat-transfer, nusselt-number
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July 27, 2021 at 3:13 pm
Dio
SubscriberHi,
I have Re=20,000, 165mm long, 15mm*15mm channel and trying to calculate Nu number.
Tin=300K
Charc. Lenght= 15mm
300 W/m^2 heat flux at top and bottom surface
Based on Nu= 0.023 Re^0.8 * Pr^0.4 = 0.023* 20000^(0.8)*0.7441^(0.4)=56.39
When I select like below, result looks different.
How should I calculate Nu? What can be the post processing expression formula?
Thank you,
Anton
July 27, 2021 at 3:56 pmRob
Forum ModeratorLook in the User's Guide for the exact definition https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v212/en/flu_ug/flu_ug_fvdefs.html (hint, use the Rules & Guidelines if you can't open the link).
July 28, 2021 at 6:30 pmDio
SubscriberThank you Rob, I was looking for formulas like below videos. I hope these will be usefull for future users.
https://www.youtube.com/watch?v=mv3uDy7ZuCY
https://www.youtube.com/watch?v=3YJhB7VmVEw&t=2s
https://www.youtube.com/watch?v=YXkGqLC64-Q
July 29, 2021 at 1:40 pmDrAmine
Ansys EmployeeVideos might be helpful but always rely on the official and up to date Ansys Help Websites :)
July 29, 2021 at 4:44 pmDio
SubscriberYou are right you guys doing amazing job. I learned alot in this website.Viewing 4 reply threads- The topic ‘Nusselt number calculation for a channel’ is closed to new replies.
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