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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Imprimir: 1065-3090
ISSN On-line: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v4.i2.50
pages 141-148

VISUALIZATION IN THE INTERFACE OF A NONCONTACTING MECHANICAL FACE SEAL WITH SPIRAL GROOVE PATTERN

M. Rasaei
Department of Mechanical and Production Engineering, The National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
Sonny H. Winoto
Department of Mechanical Engineering, National University of Singapore, Singapore 117576

RESUMO

A noncontacting mechanical face seal with spiral groove pattern had been designed and tested under relatively low pressures by means of visualization in its interface. The visualizations not only demonstrated its principle of operation, but also revealed the successive stages of the fluid film formation from the start-up, transition state to dynamically stable operating condition. The tests also showed that for properly aligned seal faces, the generated fluid film was stable, ensuring lubrication around the interface and hence the noncontacting and zero leakage condition, whereas for misaligned seal faces, the fluid film was not uniform, resulting in leakage even at relatively high speeds.


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