QUASI-3D DESIGN METHOD OF ROTATIONAL FLOW FOR FRANCIS RUNNER

Abstract

Abstract: Based on S1/S2 streamsurface theory, a quasi-3D design method for Francis runner is presented.The quasi-3D design model consists of an inverse calculation on S2 streamsurface and flow analysis on a number of S1 . The distribution of the swirl velocity and the blade thickness on the geometry of the runner is prescribed. The stacking position of the blade has a great influence on the blade shape and the hydraulic performance of the runner. Excellent agreements are obtained between the specified and the computed vθr distribution.

Key words: Blade boundary condition, Francis runner, Inverse problem, Quasi-three dimension

CLC Number:

TK730

Luo Xingqi;Chen Naixiang;Lin Ruchang. QUASI-3D DESIGN METHOD OF ROTATIONAL FLOW FOR FRANCIS RUNNER[J]. , 1997, 33(1): 48-54.

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QUASI-3D DESIGN METHOD OF ROTATIONAL FLOW FOR FRANCIS RUNNER

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