Suppression of secondary flows in a mixed-flow pump impeller by application of three-dimensional inverse design method. Part 2: Experimental validation
- Ebara Research Co., Ltd., Fujisawa (Japan)
- University College of London (United Kingdom). Dept. of Mechanical Engineering
In Part 1 of this paper, a mixed-flow pump impeller was designed by a fully three-dimensional inverse design method, aimed at suppressing the secondary flows on the blade suction surface. In this part, the internal flow fields of the impeller are investigated experimentally, using flow visualization and phase-locked measurements of the impeller exit flow, in order to validate the effects of secondary flow suppression. The flow fields are compared with those of a conventional impeller, and it is confirmed that the secondary flows on the blade suction surface are well suppressed and the uniformity of the exit flow fields is improved substantially, in both circumferential and spanwise directions. The effects of tip clearance and the number of blades for the inverse designed impeller are also investigated experimentally and numerically.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 287465
- Report Number(s):
- CONF-940626-; ISSN 0889-504X; TRN: IM9639%%53
- Journal Information:
- Journal of Turbomachinery, Vol. 118, Issue 3; Conference: 39. international gas turbine and aeroengine congress and exposition, The Hague (Netherlands), 13-16 Jun 1994; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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