Question:
The Fourier number (\(N_{Fo}\)) is defined as (α is thermal diffusivity, L is characteristic length and t is time)
The Fourier number (\(N_{Fo}\)) is defined as (α is thermal diffusivity, L is characteristic length and t is time)
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Higher Fourier number indicates deeper heat penetration in transient conduction.
Updated On: June 02, 2025
- \( \frac{h k}{L} \)
- \( \frac{h L}{k} \)
- \( \frac{t L^2}{\alpha} \)
- \( \frac{\alpha t}{L^2} \)
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The Correct Option is D
Solution and Explanation
Fourier number represents dimensionless time and is given by:
\[ N_{Fo} = \frac{\alpha t}{L^2} \]
It is used in transient heat conduction to describe heat penetration over time.
\[ N_{Fo} = \frac{\alpha t}{L^2} \]
It is used in transient heat conduction to describe heat penetration over time.
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