Grashof Number Calc for Greenhouse: 1.5m x 2m x 2m

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SUMMARY

The discussion focuses on calculating the Grashof number for a greenhouse with dimensions of 1.5 m wide, 2 m long, and 2 m high. The characteristic length can be approximated using any of the dimensions, as the differences are minimal. A more precise analysis would require considering each dimension separately, but for basic calculations, selecting any of the three dimensions is sufficient.

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trickre
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Homework Statement


Hello. This should be rather easy. I am trying to figure out what the Characteristic length I should use in calculating the grashof number for a greenhouse. The dimensions given for the greenhouse are 1.5 m wide x 2 m long and 2 m high. What characteristic length should I choose? Is it vertical plate, horizontal plate? I am lost.

Homework Equations

The Attempt at a Solution

 
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trickre said:
Is it vertical plate, horizontal plate?
That shouldn't matter, as you make a rough approximation only. A better analysis would have to take the different dimensions into account separately. Just pick some length you like, the three are very similar anyway.
 

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