0

Full Content is available to subscribers

Subscribe/Learn More  >

Optimum Meridian Profile With Additional Criteria

[+] Author Affiliations
Takuji Tsugawa

Kobe, Japan

Paper No. FEDSM2009-78038, pp. 71-78; 8 pages
doi:10.1115/FEDSM2009-78038
From:
  • ASME 2009 Fluids Engineering Division Summer Meeting
  • Volume 2: Fora
  • Vail, Colorado, USA, August 2–6, 2009
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4373-4 | eISBN: 978-0-7918-3855-6
  • Copyright © 2009 by ASME

abstract

In the previous paper, the optimum meridian profile of impeller and guidevane was obtained improving efficiency and cavitation performance. But, the meridian profile of impeller and guidevane is necessary to be decided by the consideration of various operative conditions for the practical use. In particularly, it is important that the separation flow in impeller and guidevane is suppressed in partial flow rate. In this paper, the optimum meridian profile of impeller and guidevane is calculated by considering the partial flow rate operative condition. That is, the optimum criteria are the efficiency, the cavitation performance and the partial flow rate operative condition. The partial flow rate operative condition is expressed by the limited condition of diffusion factor (e.g. Deq = 2). In the optimum procedure, the meridian profile is improved considering diffusion factor at partial flow rate in tip, mid-span and hub stream lines of impeller and guidevane become to the objective value (e.g. Deq = 2) in specified partial flow rate (e.g. Qpartial = 0.5Q). The equation of partial flow rate diffusion factor is expressed by partial inlet-outlet flow condition and additional term expressed by increase of attack angle at impeller inlet and at guidevane inlet. As the result, the optimum meridian profile considering partial flow rate operative condition is obtained.

Copyright © 2009 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In