Question:
The Prandtl number (\(N_{Pr}\)) is the ratio of
The Prandtl number (\(N_{Pr}\)) is the ratio of
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Use \(N_{Pr}\) to analyze heat transfer in laminar boundary layer flows.
Updated On: May 29, 2025
- Thermal diffusivity to momentum diffusivity
- Momentum diffusivity to mass diffusivity
- Momentum diffusivity to thermal diffusivity
- Mass diffusivity to thermal diffusivity
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The Correct Option is C
Solution and Explanation
Prandtl number is defined as:
\[ N_{Pr} = \frac{\nu}{\alpha} = \frac{\mu / \rho}{k / (\rho C_p)} = \frac{\mu C_p}{k} \]
It describes the relative thickness of velocity and thermal boundary layers.
\[ N_{Pr} = \frac{\nu}{\alpha} = \frac{\mu / \rho}{k / (\rho C_p)} = \frac{\mu C_p}{k} \]
It describes the relative thickness of velocity and thermal boundary layers.
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