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**1.**I am using FEA modelling for a vertical heated flat plate and I need to compare theoretical results with the FEA s/w modelling results. I have completed the model in FEA s/w and I'm getting different values for temperatures and because I can't work out theoretical values then I do not know which run of the s/w is correct. The problem I am looking at is natural convection of a vertical flat plate. I have been give q=30W, ambient air temp of 22 degrees and also dimensions of the plate 106x106mm, hence surface area of 0.112m^2.

## Homework Equations

I believe the relevant equation is q=ha(Ts-Ta) or q= mass flow rate *Cp(Ts-Ta)

## The Attempt at a Solution

My attempt is to look at the equation above. I know that q is 30W and I know that a is the surface area and I also know that Ta is 22 degrees (temp of air). This seems to be an equation though with 3 unknowns - I know the ambient air temp is 22 degrees however the temp of the air a distance away from the heated plate will be changing as convection takes place.