|
[Sponsors] |
July 9, 2005, 17:47 |
Heat Exchanger...TWO
|
#1 |
Guest
Posts: n/a
|
Hi,
I am a new CFX user and the only version that I can use is CFX 5.5.1. I have posted a question on this forum last month with title: Heat exchanger. I received a number of replies but none of them seems to answer the question. I would be grateful if any one has a previous experience in simulation of heat exchanger condenser can help me on this. Please, see to the previous question on Wed, 22 Jun 2005, 5:09 p.m. for details. Below I show the reference case and CFX result for a heat exchanger tube; Design case as reference; Tube lenght is 8 m Tin=70'C Tout=85'C Tube Diameter is .02 m Wall Temperature (fixed) is 90'C CFX result; Tube lenght is 8 m Tin=70'C Tout=90'C Tube Diameter is .02 m Wall Temperature (fixed) is 90'C I noticed the fluid reaches the wall temperature before passing 1/3 of tube length which contradicts the design data. Is this reasonable result from CFX? Or I have made a mistake somewhere? I appreciate any help… |
|
July 10, 2005, 19:59 |
Re: Heat Exchanger...TWO
|
#2 |
Guest
Posts: n/a
|
Hi,
Sounds like you need to do some reading into wall heat transfer modelling. Have a look at some heat transfer validation studies (the CFX Community has some available for download) and textbooks - Turbulence Modelling for CFD by Wilcox is a good one. Glenn Horrocks |
|
July 11, 2005, 20:04 |
Re: Heat Exchanger...TWO
|
#3 |
Guest
Posts: n/a
|
Dear Glenn Horrocks,
Thank you for your advice and for previous reply, I have already covered the topic theoretically but the simulation results are a bit weird. I will try to find some previous studies. Thnaks Walid |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Heat Exchanger Model | sak2129 | FLUENT | 3 | September 26, 2017 02:29 |
Macro Heat Exchanger not selecting (Please help!) | zdeth | FLUENT | 2 | September 11, 2012 14:52 |
UDF for Heat Exchanger model | francois louw | FLUENT | 2 | July 16, 2010 03:21 |
Heat Exchanger Simulation | tightaznbreaka | FLUENT | 0 | March 18, 2010 16:45 |
Convective Heat Transfer - Heat Exchanger | Mark | CFX | 6 | November 15, 2004 16:55 |