Duan, Wenbo Chu, Fulei Kim, Chang-Ho Lee, Yong-Bok 2024-01-21T01:31:10Z 2024-01-21T01:31:10Z 2021-09-05 2007-03 0301-679X https://pubs.kist.re.kr/handle/201004/134590 The bulk-flow model was used to calculate the static and the dynamic characteristics of floating ring seals because the solutions based on the numerical integration of the complete Navier-Stokes equations can be very time consuming. A steepest-descent method is used to find the seal's equilibrium position efficiently. The bulk-flow model is governed by three partial differential equations on eccentric working conditions. A finite-difference scheme has been used to solve the nonlinear governing equations. Compared to Nelson and Nguyen's fast fourier transform method, this scheme has better consistency. Perturbation analysis of the flow variables yields a set of zeroth and first-order equations. The SIMPLE algorithm is used to integrate the system of bulk-flow equations. Comparisons of the numerical predictions (lock-up eccentricity ratio, leakage flow rate and rotordynamic coefficients) with Ha's results, which were formulated using the Fourier series, and experimental data are presented subsequently. (c) 2006 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD HIGH-PRESSURE ROTORDYNAMIC COEFFICIENTS LEAKAGE A bulk-flow analysis of static and dynamic characteristics of floating ring seals Article 10.1016/j.triboint.2006.04.010 1 TRIBOLOGY INTERNATIONAL, v.40, no.3, pp.470 - 478 TRIBOLOGY INTERNATIONAL 40 3 470 478 scie scopus 000242523100007 2-s2.0-33748959513 Engineering, Mechanical Engineering Article HIGH-PRESSURE ROTORDYNAMIC COEFFICIENTS LEAKAGE floating ring seals bulk flow analysis static and dynamic characteristics