《Table 7 Viscous forces at five rotational speeds and△P=5000Pa with eccentricity (e=0.0002m)》

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《Effect and sensitivity analysis of the rotational speed on the fluid-induced force characteristics of the straight-through labyrinth gas seal》

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Fig.6 and Table 6 illustrate the dependence of the viscous forces on the rotor surface for all five rotational speeds at△P=5000Pa without eccentricity（e=0.0000m）.The radial viscous force increases by approximately 0.27%（from 0.0000027237N at 200rad/s to 0.000015222N at 500rad/s）with the increasing rotational speed（sensitivity coefficient=0.0018）.The axial viscous force and total viscous force increase by approximately 2.03%（from 0.087941N at 200rad/s to 0.089724N at 500rad/s）with the increasing rotational speed（sensitivity coefficient=0.0135）.Therefore，the radial viscous force is significantly smaller than the axial viscous force，the axial viscous force is the crucial part of the total viscous force，the viscous forces are sensitive to the increasing rotational speed，and the axial and total viscous forces are more sensitive than the radial viscous force.