A Practical Combined Computation Method of Mean Through-Flow for 3D Inverse Design of Hydraulic Turbomachinery Blades

[+] Author and Article Information
Guoyi Peng

Department of Mechanical Systems Engineering, Toyama Prefectural University, Toyama, 939-0398, Japanpeng@pu-toyama.ac.jp

J. Fluids Eng 127(6), 1183-1190 (Jul 01, 2005) (8 pages) doi:10.1115/1.2062787 History: Received January 23, 2004; Revised July 01, 2005

A practical combined computation method of the circumferentially averaged mean through-flow is presented for 3D inverse computations of hydraulic turbomachinery blades to consider the influence of interrelated hydraulic components. A comprehensive computation domain including the runner blades and related components is adopted and the mean flow is calculated altogether by solving a set of rotational flow governing equations simultaneously. The method has been applied to the case of Kaplan turbine. Computational results were compared to experimental data and their agreement was confirmed. Numerical investigation indicates that the mean flow is dependent on the configuration of guide vanes and the effect of runner blades reaches to the far upstream. The importance of properly taking account of the effect of blade geometry and the influence of interrelated hydraulic components is demonstrated.

Copyright © 2006 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Curvilinear coordinates relative to hydraulic blades

Grahic Jump Location
Figure 2

Schematic diagram of computation configuration and computational grid

Grahic Jump Location
Figure 3

Distribution of meridional streamline in cases with and without runner blades

Grahic Jump Location
Figure 4

Comparison of computational results by different meshes and experimental data: distribution of circumferentially averaged mean velocity in the radial direction: (a) at section 1-1 and (b) at section 2-2

Grahic Jump Location
Figure 5

Blade geometry on cylindrical sections

Grahic Jump Location
Figure 6

Mean swirl velocity distribution in the blade region

Grahic Jump Location
Figure 7

Distribution of meridional velocity along streamlines in cases with and without the runner blades: (a) in the case with runner blades and (b) in the case without runner blades

Grahic Jump Location
Figure 8

Meridional velocity distribution at sections 1-1 and 2-2

Grahic Jump Location
Figure 9

Meridional velocity distribution along blade leading and trailing edges

Grahic Jump Location
Figure 10

Swirl velocity distribution along the trailing edge of the guide vane




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 Journal Articles
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