CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   Main CFD Forum (https://www.cfd-online.com/Forums/main/)
-   -   boundary condition for temperature (https://www.cfd-online.com/Forums/main/14969-boundary-condition-temperature.html)

 ane March 24, 2008 05:27

boundary condition for temperature

The boundary condition for temperature in the problem of unsteady boundary layer problem is

T = Tw at y = 0 and T = Te as y goes to infinity

when considering the following non-dimensional variables where the first one is theta = (T - Tw)/(Te - Tw)

and the second one is theta = (T - Te)/(Tw - Te),

we have for the first one T = 0 at y = 0, T = 1 at y infinity

and for the second one T = 1 at y = 0, T = 0 at y infinity

Note: Tw wall temperature, Te temperature far from the wall, theta dimensionless variable for temperature

can you explain what is the meaning of differences between these two cases and when we should apply the first one and the second one?

 All times are GMT -4. The time now is 08:01.