Shear flow when the mechanical seal moves-

Shear flow when the mechanical seal moves

　2017-03-07　　

Shear flow during mechanical seal movement

When there is relative rotational movement on the sealing surface, such as in a mechanical seal, this movement may cause turbulence. The rotational flow of speed is caused to become turbulent flow in the circumferential direction (shear flow direction). This makes the entire flow field (radial pressure difference flow) appear turbulent.

For narrow gaps (narrow gaps in which the boundary layer has disappeared) the smaller the gap, the more critical the turning point rotation Reynolds number is. Because the side wall has a stable effect on the fluid, this should be considered when selecting the design gap.　　327.html,

The result of the separation of the boundary layer of the mechanical seal 　　 The circular flow between the cylinder and the cylinder in the mechanical seal application