The Grashof Number for Pipes calculator computes the Grashof number for pipes based on the coefficient of expansion, surface temperature, bulk temperature, diameter of the pipe, kinematic viscosity and the acceleration due to gravity.
INSTRUCTIONS: Choose units and enter the following:
Grashof Number for Pipes (GrD): The calculator returns the Grashof Number.
The Grashof Number for pipes is a dimensionless number in fluid dynamics and heat transfer which approximates the ratio of the buoyancy to viscous force acting on a fluid. It frequently arises in situations involving natural convection. The Grashof Number formula for pipes is:
`Gr_D=(g·β(T_s-T_∞)D^3)/ν^2`,
where:
Note: the default gravitational acceleration is 9.80665 m/s2, which is the acceleration due gravity at sea level in SI units.
Wikipedia (https://en.wikipedia.org/wiki/Grashof_number)