|May 19, 2009, 07:07||
Issue with units in heat transfer
Join Date: Apr 2009
Posts: 113Rep Power: 7
I'm trying to do a numerical simulation of an experiment involving heat transfer in a pipe. In the experiment electrical wires were used to generate 100 Watts of energy which raises the temperature by 10 K (given the mass flow rate of the flow).
In my simulation I am trying to generate the same amount of heat over a distributed region. The standard energy equation is implemented in the CFD code and I introduce extra heat sources into the energy equation to generate the heat.
My problem is I don't know what value the heat source term in the energy equation should take. I divided 100 Watts by the volume where I input the heat source (so that when it integrates through all the volumes it will give 100 Watts). But this value of heat input gives a much larger change in temperature. Am I missing something obvious? (the code uses non-dimensionalisation of the variables and I'm fairlty certain that I non-dimensionalised it correctly).
|heat transfer, units|
|Thread||Thread Starter||Forum||Replies||Last Post|
|No results for solid domain||Gary Holland||CFX||10||March 13, 2009 04:30|
|How can I increase Heat Transfer at Domain Interf?||B.Simon||CFX||3||October 28, 2008 19:53|
|Two-Phase Buoyant Flow Issue||Miguel Baritto||CFX||4||August 31, 2006 12:02|
|Units for heat transfer rate??||ocy||FLUENT||0||March 21, 2005 03:34|
|Convective Heat Transfer - Heat Exchanger||Mark||CFX||6||November 15, 2004 15:55|