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Air Entrained Amount Measurement in the Two-Phase Flow Through Inlet Passage of Pump

[+] Author Affiliations
Daqing Zhou, Zhaofeng Xu, Meng Li, Shuhong Liu, Yulin Wu

Tsinghua University, Beijing, China

Takahide Nagahara

Hitachi Industries Company, Ltd., Tsuchiura-shi, Ibaraki-ken, Japan

Paper No. FEDSM2005-77489, pp. 1529-1533; 5 pages
  • ASME 2005 Fluids Engineering Division Summer Meeting
  • Volume 1: Symposia, Parts A and B
  • Houston, Texas, USA, June 19–23, 2005
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-4198-7 | eISBN: 0-7918-3760-2
  • Copyright © 2005 by ASME


In the paper, we adopt Image method to perform entrained air amount measurement in the two-phase flow through inlet passage of pump. Furthermore, not only air entrained amount but also air bubble’s size are discussed and compared under different work conditions. Results show that under all the normal conditions, the maximum value of air entrained rate is 2.5 mL/s, and the maximum of volumetric ratio is 0.006%. The minimum measurable bubble volume is about 1 mm3 , and the maximum bubble size is about 0.39 cm3 . Analysis also shows that chest wall angle is a main factor that affects air entrained vortex occurrence.

Copyright © 2005 by ASME
Topics: Pumps , Two-phase flow



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