Numerical analysis of the flow field around a Ribbed helix lip seal

Chih-yung Wen, A. S. Yang, C. S. Tseng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this study, a direct numerical simulation model has been developed to aid in the understanding of the pumping mechanism of a ribbed helix lip seal. A SIMPLEC numerical algorithm with the staggered-grid arrangement is employed to simulate the flow field around the contact region between the lip and the shaft in the environment of a pumping-rate test rig, where both air and oil sides are filled with oil initially. The streamline pattern and pressure field are examined. Complicate three-dimensional streamline topology is analyzed. The vortex generated next to the lip on the oil side rotates such to create an inward pumping effect. On the air side, pressure built up on the windward faces of ribbed helices next to the lip also help pumping oil back to the sump. The pumping rates are calculated at shaft speeds, ranging from 1000 to 6000 rpm, and compared to the measured values from the test rig. Good agreement is observed. Both calculated and measured pumping rates increase as shaft speed and sump temperature increase and as the sealed fluid viscosity decreases. The current results demonstrate the promising application of CFD in the design of radial lip seals.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Fluid Power Transmission and Control, ICFP 2005
PublisherInernational Academic Publishers
Pages257-261
Number of pages5
ISBN (Electronic)7506274027, 9787506274029
Publication statusPublished - 1 Jan 2005
Externally publishedYes
Event6th International Conference on Fluid Power Transmission and Control, ICFP 2005 - Hangzhou, China
Duration: 5 Apr 20058 Apr 2005

Conference

Conference6th International Conference on Fluid Power Transmission and Control, ICFP 2005
CountryChina
CityHangzhou
Period5/04/058/04/05

Keywords

  • Helix
  • Pumping rate
  • Radial lip seal
  • Sealing mechanism
  • Streamline

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering

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