Ansys Fluent - Transient Thermal

EJ01 · November 20, 2017, 11:47

Yello everyone,

Is there any way to define an initial temperature while performing a transient analysis in Ansys Fluent ?

I have a simple cube, in one face I impose as a boundary condition 20ºC, the rest of the faces are adiabatic except for one. In this non adiabatic I want to impose an initial temperature and see its evolution over time according to the 20ºC boundary condition.

Than you very much in advance

AlexanderZ · November 20, 2017, 21:18

Read about PATCH tool

Ansys Fluent User's Guide

29.9. Initializing the Solution

Best regards

EJ01 · November 21, 2017, 05:29

Hello,

Thank you for your answer. Yes, i do know the patch tool but I think it is not effective in my case.

My problem is not the initial temperature of the body (for that I do not need to use patch). I want to define an initial temperature for a surface of the cube (not for the Wall cube).

I want that my boundary condition is an initial temperature rather than a static boundary. I want to assess the temperature and flux variation on that surface, and if I choose a static boundary, I am not able to do that.

Thank you

TechAnalyst2012 · November 24, 2017, 13:37

can u give the value of heat transfer coeff of that wall ....

November 20, 2017, 11:47	Ansys Fluent - Transient Thermal	#1
EJ01 New Member Join Date: Nov 2017 Posts: 8 Rep Power: 8	Yello everyone, Is there any way to define an initial temperature while performing a transient analysis in Ansys Fluent ? I have a simple cube, in one face I impose as a boundary condition 20ºC, the rest of the faces are adiabatic except for one. In this non adiabatic I want to impose an initial temperature and see its evolution over time according to the 20ºC boundary condition. Than you very much in advance

November 24, 2017, 13:37	initial temp	#4
TechAnalyst2012 New Member Midhun Join Date: Oct 2014 Location: Bangalore , India Posts: 7 Rep Power: 11	can u give the value of heat transfer coeff of that wall ....

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November 20, 2017, 21:18		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	Read about PATCH tool Ansys Fluent User's Guide 29.9. Initializing the Solution Best regards

November 21, 2017, 05:29		#3
EJ01 New Member Join Date: Nov 2017 Posts: 8 Rep Power: 8	Hello, Thank you for your answer. Yes, i do know the patch tool but I think it is not effective in my case. My problem is not the initial temperature of the body (for that I do not need to use patch). I want to define an initial temperature for a surface of the cube (not for the Wall cube). I want that my boundary condition is an initial temperature rather than a static boundary. I want to assess the temperature and flux variation on that surface, and if I choose a static boundary, I am not able to do that. Thank you