An Improved Simple Method for Designing Optimum Annular Diffusers PUBLIC ACCESS

[+] Author Affiliations
R. Cai, H. Jiang, Y. Zhu

Institute of Engineering Thermophysics, Beijing, People’s Republic of China

Paper No. 85-GT-126, pp. V001T03A033; 8 pages
  • ASME 1985 International Gas Turbine Conference and Exhibit
  • Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery
  • Houston, Texas, USA, March 18–21, 1985
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7938-2
  • Copyright © 1985 by ASME


In ASME paper 83-GT-42, a simple method for designing optimum annular diffusers was proposed and good results were obtained. But it is essentially a 1-D approximate method adapted for axial annular diffusers only. Actually, within the same assumption and limitation, it can be modified and improved effectively by the Mean-Stream-Line Method developed by the Chinese scientists led by Prof. C.H. Wu. The calculation can be done rapidly for axial, radial and mixed type diffusers, and the 2-D flow field in the diffusers can also be determined easily. A set of simple BASIC codes has been programed on the pocket computer Sharp PC-1500 and some calculation examples are given.

Copyright © 1985 by ASME
Topics: Diffusers , Design
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