Forced Convection - Heat transfer equation

AI Thread Summary
The equation for heat transfer due to forced convection is similar to that of natural convection, expressed as Q = h A (ΔT). The key challenge lies in determining the heat transfer coefficient (h), which is influenced by system geometry, flow rates, and turbulence-enhancing devices. Various formulas based on correlations for different forced convection scenarios can be found, often utilizing non-dimensional parameters such as Reynolds, Nusselt, Prandtl, and Grashof numbers. These correlations provide a more comprehensive understanding of forced convection dynamics. Accurate references for these equations are essential for MEng projects.
02coled
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Hello

Wondering if anyone can help me towards finding an equation to calculate the heat transfer due to forced convection? Can't seem to find a good source for one at all, needs to be referenced for my MEng project.

Currently have for natural convection:

Q = h A (ΔT)

Thank you

02coled
 
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The formula is basically the same. The real question is how to find the value of h. That depends very much on the geometry of the system, the flow rates, whether there are devices to increase turbulence in the flow, etc.

You should be able to find some formulas (usually based on correlations) for different forced convection situations. They are often given in terms of non-dimensional parameters like the Reynolds, Nusselt, Prandtl, and Grasshof numbers for the flow, rather than in "physical units".
 
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