Which one of the following statements is correct?The non-dimensional p...
Forced convection heat transfer in flow over flat plate
The correct answer is option 'A' - Forced convection heat transfer in flow over a flat plate. The non-dimensional parameter known as Stanton number (St) is used in forced convection heat transfer over a flat plate.
Explanation:
1. Stanton Number:
The Stanton number (St) is a dimensionless parameter used in heat transfer analysis. It relates the heat transfer rate to the temperature difference and fluid properties. It is defined as the ratio of the convective heat transfer coefficient to the product of the fluid density, specific heat, and fluid velocity.
2. Forced Convection Heat Transfer:
Forced convection heat transfer occurs when a fluid is forced to flow over a solid surface, such as a flat plate. The heat transfer between the fluid and the surface is enhanced by the motion of the fluid. In this case, the fluid flow is driven by an external force, such as a fan or a pump.
3. Flow over a Flat Plate:
Flow over a flat plate is a common scenario in many engineering applications. The heat transfer characteristics in this case are important to determine the cooling or heating requirements. The fluid flow over a flat plate can be laminar or turbulent, depending on the flow conditions.
4. Importance of Stanton Number in Forced Convection Heat Transfer over a Flat Plate:
The Stanton number (St) is specifically used to analyze forced convection heat transfer over a flat plate. It quantifies the convective heat transfer rate per unit temperature difference between the fluid and the surface. It takes into account the fluid properties, such as density and specific heat, as well as the fluid velocity and the convective heat transfer coefficient.
5. Application of Stanton Number:
In forced convection heat transfer over a flat plate, the Stanton number is used to determine the heat transfer coefficient and the heat transfer rate. It is an important parameter in the design and analysis of heat exchangers, cooling systems, and other heat transfer equipment where forced convection is involved.
Conclusion:
The non-dimensional parameter known as Stanton number (St) is used in forced convection heat transfer over a flat plate. It quantifies the convective heat transfer rate per unit temperature difference and is an important parameter in heat transfer analysis and design.
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