Connect with IT Design CFD software users to optimize data center equipment layout, cooling, and energy consumption using computational fluid dynamics (CFD).
Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.
You have entered an invalid email address. Please re-enter the email address.
This co-worker has already been invited to the Exchange portal. Please invite another co-worker.
Please enter email address
Send InviteCancel
Invitation Sent
Your invitation was sent.Thanks for sharing Exchange with your co-worker.
Send New InviteClose
Invite a Colleague
Found this content useful? Share it with a Colleague!
Link copied. Please paste this link to share this article on your social media post.
Posted: โ2023-05-1602:47 PM
Raised Floor and Dropped Ceiling Leakage Update
The Room menu now shows airflow leakage details for the raised floor and dropped ceiling.
We havenโt changed any calculations, but here is some additional background information. The airflow leakage velocity ๐ at any location is related to the pressure drop ฮ๐ across the raised floor or dropped ceiling by:
ฮ๐=๐(1/2)๐๐2
where ๐ is the density of air (we assume 1.2 kg/m3 at seal level) and ๐ is the dimensionless loss coefficient. We compute ๐ as a function of open area ๐ฝ for all resistances in EcoStruxure IT Advisor CFD from [1]:
๐=(1/๐ฝ2.3)(1โ๐ฝ)
Note that ๐ฝ in the above equation is a decimal value, not a percentage. For example, 0.01 instead of 1%. Finally, % open area values selected for the various raised floor and dropped ceiling leakage options are based on [2] and [3].
1. VanGilder, J., Seymour, M., Hu, B., Tian, W., Pang, M., and Lin, C., 2022 โFlow Resistance Characteristics for Data Center CFDโ, ASHRAE Transactions 2022, Volume 128, Part 2. 2. VanGilder, J., and Zhang, X., 2015, โDevelopment of a Raised-Floor Plenum Design Toolโ, Proceedings of InterPACK, July 6-9, San Francisco, California. 3. VanGilder, J. And Zhang, X. 2014, โCooling Performance of Ceiling-Plenum-Ducted Containment Systems in Data Centersโ, Proceedings of the Intersociety Conference on Thermomechanical Phenomena in Electronic Systems (ITHERM 2014), May 27โ30, Orlando, Florida.