## Prandtl Number

The **Prandtl number** is a dimensionless number; the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity. It is named after the German physicist Ludwig Prandtl.

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### Some articles on prandtl number:

Turbulent

... The turbulent

**Prandtl Number**... The turbulent

**Prandtl number**is a non-dimensional term defined as the ratio between the momentum eddy diffusivity and the heat transfer eddy diffusivity ... The simplest model for is the Reynolds analogy, which yields a turbulent**Prandtl number**of 1 ... of 0.85, but ranges from 0.7 to 0.9 depending on the**Prandtl number**of the fluid in question ...**Prandtl Number**

... The

**Prandtl number**is a dimensionless

**number**the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity ... It is named after the German physicist Ludwig

**Prandtl**... Note that whereas the Reynolds

**number**and Grashof

**number**are subscripted with a length scale variable, the

**Prandtl number**contains no such length scale ...

Sherwood Number

... The Sherwood

... The Sherwood

**number**, (also called the mass transfer Nusselt**number**) is a dimensionless**number**used in mass-transfer operation ... analysis, it can also be further defined as a function of the Reynolds and Schmidt**numbers**For example, for a single sphere it can be expressed as where is the Sherwood**number**due only to natural convection and ... valuable to chemical engineers in situations where the Reynolds**number**and Schmidt**number**are readily available ...Boundary Layer - Aerodynamics

... boundary layer was first defined by Ludwig

... boundary layer was first defined by Ludwig

**Prandtl**in a paper presented on August 12, 1904 at the third International Congress of Mathematicians in Heidelberg, Germany ... of the two thicknesses is governed by the**Prandtl number**... If the**Prandtl number**is 1, the two boundary layers are the same thickness ...Turbulent

... In the special case where the

**Prandtl Number**- Consequences... In the special case where the

**Prandtl number**and turbulent**Prandtl number**both equal unity (as in the Reynolds analogy), the velocity profile and ... If the**Prandtl number**and turbulent**Prandtl number**are different from unity, then a solution is possible by knowing the turbulent**Prandtl number**so that ... Consequently, the turbulent**Prandtl number**has no meaning ...### Famous quotes containing the word number:

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—Sigmund Freud (1856–1939)

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