Which one of the following statements is correct?The non-dimensional p...
The Stanton number (St) is a dimensionless parameter that is used to characterize heat transfer in forced convection over a flat plate. It relates the convective heat transfer rate to the temperature difference between the fluid and the surface. The correct statement in this case is option 'A', which states that the Stanton number is used in forced convection heat transfer in flow over a flat plate.
Here is a detailed explanation of why option 'A' is correct:
Forced convection heat transfer in flow over flat plate
In forced convection, heat transfer occurs when a fluid flows over a solid surface due to the external influence, such as a fan or a pump. This type of heat transfer is commonly encountered in various engineering applications, such as cooling of electronic devices, heat exchangers, and air conditioning systems.
A flat plate is a common geometry used to study forced convection heat transfer. The flow over a flat plate can be characterized by several dimensionless parameters, including the Stanton number. The Stanton number (St) is defined as the ratio of convective heat transfer to the product of fluid density, velocity, and specific heat capacity.
St = h / (ρ * u * Cp)
where:
- h is the convective heat transfer coefficient,
- ρ is the fluid density,
- u is the velocity of the fluid,
- Cp is the specific heat capacity of the fluid.
The Stanton number is a measure of the convective heat transfer effectiveness in relation to the fluid properties and flow conditions. It quantifies the rate of heat transfer per unit area of the plate surface.
By using the Stanton number, engineers can analyze and design heat transfer systems involving forced convection over a flat plate. It helps in determining the efficiency of heat transfer and optimizing the design parameters to achieve desired cooling or heating effects.
In conclusion, the correct statement is option 'A', as the Stanton number is indeed used in forced convection heat transfer in flow over a flat plate.
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.