Table of Contents
Where is Stanton number used?
heat transfer
The Stanton number, St, is a dimensionless number that measures the ratio of heat transferred into a fluid to the thermal capacity of fluid. The Stanton number is named after Thomas Stanton (engineer) (1865–1931). It is used to characterize heat transfer in forced convection flows.
What is Schmidt number of air?
According to the theory of gaseous molecular motion, the theoretical Sc number of the air is 0.9[3], which often has a difference with the actual case.
What is the significance of Lewis number?
The Lewis number is defined as the ratio of thermal diffusivity and mass diffusivity. It is used to characterize fluid flows where there is simultaneous heat and mass transfer.
What is Stanton diagram?
In engineering, the Moody chart or Moody diagram (also Stanton diagram) is a graph in non-dimensional form that relates the Darcy–Weisbach friction factor fD, Reynolds number Re, and surface roughness for fully developed flow in a circular pipe. It can be used to predict pressure drop or flow rate down such a pipe.
How do you measure your Peclet number?
The Peclet number is defined as Pe=uadL/D, where ua is the average velocity of the flow, dL the characteristic length of the system perpendicular to the direction of the flow, and D the diffusion coefficient of the particle or molecule of interest [1].
What is the Péclet number?
What is Péclet Number. The Péclet number is a dimensionless number, named after the French physicist Jean Claude Eugène Péclet. The Péclet number is defined as the ratio of the rate of advection of a physical quantity by the flow to the rate of diffusion (matter or heat) of the same quantity driven by an appropriate gradient.
What is the Péclet ratio?
It is named after the French physicist Jean Claude Eugène Péclet. It is defined to be the ratio of the rate of advection of a physical quantity by the flow to the rate of diffusion of the same quantity driven by an appropriate gradient.
What is the difference between the dispersion number and Peclet number?
Vessel Dispersion number measures the extent of Axial Dispersion. The Peclet number for a vessel is the ratio of Rate of Transport by Convection to the Rate of Transport by Dispersion.
What is the Péclet number of a flow?
A flow will often have different Péclet numbers for heat and mass. This can lead to the phenomenon of double diffusive convection. In the context of particulate motion the Péclet number has also been called Brenner number, with symbol Br, in honour of Howard Brenner.