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LaTeX Math Block |
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\mbox{Ra} = \mbox{Gr} \cdot \mbox{Pr} = \frac{g \, \beta \, \Delta T \, L^3}{\nu \cdot a} |
where
See also
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Physics / Thermodynamics / Heat Transfer
[ Dimensionless Heat Transfer Numbers ] [ Prandtl number ] [ Grashof number ]
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bgColor | papayawhip |
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title | ARAX |
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| For the Natural Thermal Convection in the annulus between two concentric pipes: LaTeX Math Block |
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| \mbox{Ra}_D = \frac{8}{(D_o - D_i)^3} \cdot \frac{ \left[ \ln D_o/D_i \right]^4 }{D_i^{-3/5}+D_o^{-3/5}} \cdot \mbox{Ra}_L =
\frac{ \left[ \ln D_o/D_i \right]^4 }{D_i^{-3/5}+D_o^{-3/5}} \cdot \frac{g \, \beta \, \Delta T }{\nu \cdot a} |
where | outer pipe | | inner pipe | LaTeX Math Inline |
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body | L = 0.5 \cdot ( D_o - D_i) |
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| annulus gap |
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