13.136. FLUID136 - 3-D Squeeze Film Fluid Element

Matrix or Vector	Geometry	Shape Functions	Integration Points
Conductivity Matrix and Velocity Load Vector	Quad, if KEYOPT(2) = 0	Equation 11–78	2 x 2 (4-node)
Conductivity Matrix and Velocity Load Vector	Quad, if KEYOPT(2) = 1	Equation 11–107	3 x 3 (8-node)
Damping Matrix	Same as conductivity matrix. If KEYOPT(1) = 1, matrix is diagonalized as described in Lumped Matrices		Same as conductivity matrix

Squeeze Film describes the governing squeeze film equations used as a basis for forming the element matrices.

A dropped midside node implies that the edge is straight and that the pressure varies linearly along that edge.