Fluid-induced rotordynamic forces produced by the fluid in an annular seal or in the leakage passage surrounding the shroud of a pump or turbine, are known to contribute substantially to the potential excitation forces acting on the rotor. The present research explores some of the important features of the equations governing bulk-flow models of these flows. This in turn suggests methods which might be used to solve these bulk-flow equations in circumstances where the linearized solutions may not be accurate. This paper presents a numerical method for these equations and discusses comparison of the computed results with experimental measurements for annular seals and pump leakage paths.
Fluid Flow Equations for Rotordynamic Flows in Seals and Leakage Paths
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division April 17, 2001; revised manuscript received October 15, 2001. Associate Editor: Y. Tsujimoto.
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Hsu , Y., and Brennen, C. E. (October 15, 2001). "Fluid Flow Equations for Rotordynamic Flows in Seals and Leakage Paths ." ASME. J. Fluids Eng. March 2002; 124(1): 176–181. https://doi.org/10.1115/1.1436093
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