# help please with forced convection

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 September 5, 2007, 14:33 help please with forced convection #1 lucia Guest   Posts: n/a Hi all, I have a problem of forced convection inside a pipe. Inside of the pipe flow a hot fluid and outside is constantly cold (cold water). In the boundary conditions of the wall, must I determine the Convection? Or is it correct if you only determine the Temperature of the cold medium? Thanks!

 September 5, 2007, 20:19 Re: help please with forced convection #2 Joe Guest   Posts: n/a You need to provide the external temperature and the effective heat transfer coefficient up to the wall-inner fluid boundary. The wall-inner fluid heat transfer is calculated by Fluent.

 September 6, 2007, 05:55 Re: help please with forced convection #3 lucia Guest   Posts: n/a Thanks Joe! Is this effective heat transfer coefficient up to the wall-inner fluid so: Ae*U = 1/ (1/hAe + ln(re/ri)/2piLk) (A0 = external area)? Also must I turn on the option "Shell conduction" and need I to provide the wall-thickness? Thanks very much.

 September 7, 2007, 16:59 Re: help please with forced convection #4 JAI SHANKAR V P[ Guest   Posts: n/a I AM JAI SHANKAR V P . I AM CURRENTLY WORKING AS SENIOR LECTURER WITH SNMIMT IN INDIA .I AM CURRENTLY COMPLEATING MY MASTERS IN PRODUCTION ENGINEERING WITH COCHIN UNIVERSITY OF SCIEANCE AND TECHNOLOGY , KOCHI, KERALA , INDIA I AM VERY MUCH INTRESTED IN THE SUBJECT CFD CAN YOU HELP[ ME STUDY THE SAME PLEASE MY EMAIL ID IS shankarvp@yahoo.co.in with regards jvp