What is flow number in fluid mechanics?

Mach number Mach number is the ratio of inertia force to the elastic force. If the Mach number is one, then the flow velocity is equal to the velocity of sound in the fluid. If it is less than one, then the flow is called subsonic flow, and if it is greater than one the flow is called supersonic flow.

What is St in fluid mechanics?

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 Fr in fluid mechanics?

Froude number (Fr), in hydrology and fluid mechanics, dimensionless quantity used to indicate the influence of gravity on fluid motion.

What is Strouhal number Fluid Mechanics?

The Strouhal number represents the ratio of inertial forces due to the local acceleration of the flow to the inertial forces due to the convective acceleration. Depending on the time scale of the problem, this ratio may be of order unity, and therefore its importance is not obvious.

What is Stanton number used for?

Stanton number is a dimensionless number that represents the ratio of heat transfer coefficient to heat capacity of a fluid. Stanton number indicates the degree of amount of heat delivered by fluid when there is heat transfer between solid surface and fluid.

When FR 1 then the flow is?

When Fr is less than 1, small surface waves can move upstream; when Fr is greater than 1, they will be carried downstream; and when Fr = 1 (said to be the critical Froude number), the velocity of flow is just equal to the velocity of surface waves.

What is Weber number in fluid mechanics?

The Weber number is a characteristic number used in fluid mechanics. As a dimensionless quantity, it describes the ratio between deforming inertial forces and stabilizing cohesive forces for liquids flowing through a fluid medium.