April 24, 2022 at 3:08 pmskydownunderSubscriber
Hi, I am new to Ansys and was trying to simulate a air circulation and heat transfer within a server room. I have details on
a. Room Inlet air flow velocity and temp
b. Rack inlet air flow velocity
c. Rack outlet airflow velocity and change in temp (Tin server +20.3C from study)
d. Room outlet Airflow
April 25, 2022 at 1:32 pmRKAnsys EmployeeHello,
- On the setup part, I noticed that the outlet BC has been assigned as pressure outlet instead of velocity outlet. How can I change it to velocity outlet? If not, how can I link the velocity outlet with pressure outlet? Same is true from the room outlet (assigned as pressure outlet)
- Is there a way to know temperature change from room inlet temp to rack inlet temp? and link the temp from rack inlet to rack outlet?
There is no outlet velocity BC. Please see this section for the list of boundary conditions : 7.4. Boundary Conditions (ansys.com)
You can setup a report definition at the 2 locations and compute the difference.
May 17, 2022 at 10:23 amMay 17, 2022 at 1:54 pmRobForum ModeratorHave a look at expressions, otherwise you need a UDF. You can use a negative velocity to s-u-c-k flow into the rack & then blow it out again. Note, mass may (won't) be conserved if the density is temperature dependent.
Edit - bypassing the naughty word filter isn't recommended, but given it's easier to upset than my Great Aunt I'm going to let myself off....
May 17, 2022 at 2:38 pmskydownunderSubscriberthanks, will try to look up for expressions
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