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| LaTeX Math Block |
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{\rm Nu}=3.6568 |
Natural Convection
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In Natural Fluid Convection becomes dependant on Rayleigh number
and Prandtl number : | LaTeX Math Inline |
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| body | --uriencoded--\mbox%7BNu%7D = f (\mbox%7BRa%7D, \mbox%7BPr%7D) |
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. Churchill and Chu correlation which works with | LaTeX Math Inline |
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| body | --uriencoded--\mbox%7BRa%7D \leq 10%5e8 |
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:
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\mbox{Nu}= 0.68 + \frac{0.663 \, \mbox{Ra}^{1/4}}{ 1+ (0.492/\mbox{Pr})^{4/9}} |
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Forced Convection
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In Forced Fluid Convection the Nusselt number becomes dependant on Reynolds number
and Prandtl number : | LaTeX Math Inline |
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| body | --uriencoded--\mbox%7BNu%7D = f (\mbox%7BRe%7D, \mbox%7BPr%7D) |
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.
For laminar flows in pipeline the Nusselt number can be estimated through empirical correlation:
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for
| LaTeX Math Inline |
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| body | --uriencoded--0.5\leq \mathrm %7BPr%7D \leq 2000 |
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and
| LaTeX Math Inline |
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| body | --uriencoded--%7B\displaystyle 3000\leq \mathrm %7BRe%7D\leq 5\cdot 10%5e%7B6%7D%7D |
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.Natural Convection
In Natural Fluid Convection becomes dependant on Rayleigh number
and Prandtl number . Churchill and Chu correlation which works with | LaTeX Math Inline |
|---|
| body | --uriencoded--\mbox%7BRa%7D \leq 10%5e8 |
|---|
|
:
| LaTeX Math Block |
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|
\mbox{Nu}= 0.68 + \frac{0.663 \, \mbox{Ra}^{1/4}}{ 1+ (0.492/\mbox{Pr})^{4/9}} |
Image Removed
qwe
See also
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Physics / Thermodynamics / Heat Transfer
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