|February 11, 2011, 07:16||
Speed of Hot air Rising
Join Date: Nov 2009
Posts: 62Rep Power: 7
Hi guys, Im carrying out salt bath experiments. My case consists of a hot plume rising in an empty room. Can anyone tell me what formula to use to find out the speed of the hot plume rising? Thanks.
|February 11, 2011, 09:41||
Join Date: May 2010
Posts: 1Rep Power: 0
The centre-line velocity in the buoyant plume behaves like
where B is the buoyancy flux and z the vertical coordinate.
The classic paper "Morton, B. R., Taylor, G. I. & Turner, J. S. 1956 Turbulent gravitational convection from maintained and instantaneous sources. Proc. Roy. Soc. A 234, 1–23." provides derivations of the velocity in a buoyant plume. Alternatively, the book "Fischer, H. B., List, E. J., Koh, R. C. Y., Imberger, J. & Brooks, N. H. 1979 Mixing in Inland and Coastal Waters. Academic Press, Inc." provides a good derivation from a dimensional analysis view point.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Boiling of water with hot air||Dr. Flow Squad||CFX||2||July 27, 2009 07:37|
|air bubble is disappear increasing time using vof||xujjun||CFX||9||June 9, 2009 07:59|
|how to estimage air speed with natural convection?||Pei-Ying Hsieh||Main CFD Forum||2||May 1, 2008 15:29|
|VOF-compression of air with rising water||yavuz||FLUENT||0||November 26, 2005 10:00|
|Hot rod in transverse air flow||Anders Larsson||Main CFD Forum||3||April 19, 1999 09:28|