Space between the disc and surface is filled with a fluid

Assignment Help Mechanical Engineering

Reference no: EM13718468

A disc with radius, R, rotates (at an angular speed of [omega]) near a surface that is fixed. The space between the disc and surface is filled with a fluid that has viscosity, µ. The distance between the disc and surface is h. Find the dependence between the torque, T, on the disc and the other variables in terms of dimensionless PI groups?

Reference no: EM13718468

Questions Cloud

Compressive force that may be applied on cylinder : A 120cm x 80cm plate is rolled into a 120cm long cylindrical shell (Using a 2cm overlap joint to create the cylinder). The shell wall thickness is 1.2mm. The material is AL-2024-T4. Calculate the maximum axial compressive force that may be applied on..

Torque required to produce a maximum shearing stress : Find the torque required to produce a maximum shearing stress of 16,500 psi in a solid circular steel shaft with a diameter of 0.875 in.

Difference between a sensor less esc and sensored esc : What is the difference between a sensor less esc and sensored esc? Which ones can be programmed auto messily and or by controller?

A spring on a rod hangs from the ceiling : A spring on a rod hangs from the ceiling and has a 100kg collar attached to the other end, also riding on the rod. The collar is 3m below the ceiling. The collar is attached to a string that passes diagonally through a pulley near the ceiling height,..

Space between the disc and surface is filled with a fluid : A disc with radius, R, rotates (at an angular speed of [omega]) near a surface that is fixed. The space between the disc and surface is filled with a fluid that has viscosity, µ. The distance between the disc and surface is h. Find the dependence bet..

Internally reversible and internally irreversible : Air in a piston-cylinder is compressed from 100kpa, 25 degrees Celsius to 650kpa, 200 degrees Celsius. Using the ideal gas model, determine the change in specific entropy if the process is a) internally reversible and b) internally irreversible.

Determine average convective heat transfer coefficient : A copper ball with a diameter of 2 cm is removed from an oven at a uniform temperature of 200°C. Upon removal from the oven, it is subjected to a flow of air at 1 atm and 20°C with a velocity of 8 m/s for a certain period of time so the surface tempe..

Steady-state surface temperature of electrical element : The element of an electrical heating device is a cylinder with a diameter of 12 mm and a length of 20 cm. The electrical energy is dissipated at a rate of 800 W. The air at 20°C moves in a cross flow over the heater with a velocity of 8 m/s.

Determine whether the air flow over the wall is laminar : Air at -5°C flows over the wall of a building with a velocity of 10 m/s. The length of the wall in the direction of air flow is 6 m. The wall is also subjected to a solar insulation of 40 W/m2, and its emissivity is 0.8. Assume an average and constan..

User Account

All Pages