prandtl number वाक्य
उदाहरण वाक्य
मोबाइल
- The magnetic Prandtl number is an important property of the fluid.
- Its counterpart the Prandtl number is employed in laminar flow calculations.
- The ratio of the two thicknesses is governed by the Prandtl number.
- That is, the Prandtl number is given as:
- The Rayleigh number ( Ra ) is the product of the Grashof and Prandtl numbers.
- If the Prandtl number is 1, the two boundary layers are the same thickness.
- The turbulent Prandtl number has been shown to not generally equal unity ( e . g.
- The Turbulent Prandtl number is a non-dimensional parameter required in convective turbulent heat transfer calculations.
- In heat transfer problems, the Prandtl number controls the relative thickness of the momentum and thermal boundary layers.
- They developed relationships between the turbulent and moleculer Prandtl number that can be employed in convective heat transfer calculations.
- If the Prandtl number is greater than 1, the thermal boundary layer is thinner than the velocity boundary layer.
- It is related to the turbulent Prandtl number which is concerned with turbulent heat transfer rather than turbulent mass transfer.
- As such, the Prandtl number is often found in property tables alongside other properties such as viscosity and thermal conductivity.
- He found that for Prandtl number greater than 0.6, the thermal boundary layer thickness was approximately given by:
- As another example, a magnetic Prandtl number of order unity is a widely accepted value for the thin accretion discs.
- However, most flows in nature are turbulent rather than laminar and therefore incorporating the use of turbulent Prandtl Number becomes necessary.
- Plot showing the relative thickness in the Thermal boundary layer versus the Velocity boundary layer ( in red ) for various Prandtl Numbers.
- The simplest model for turbulent Prandtl Number is the Reynolds analogy, which yields a turbulent Prandtl number of unity however based on.
- The simplest model for turbulent Prandtl Number is the Reynolds analogy, which yields a turbulent Prandtl number of unity however based on.
- These correlations are the mass transfer analogies to heat transfer correlations of the Nusselt number in terms of the Reynolds number and Prandtl number.
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