NDLI: Three-Dimensional Blade Design of Helico-Axial Multiphase Pump Impeller Based on Numerical Solution of Meridian Flow Net and Blade Mean Camber Lines

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Zhang, Jinya Zhu, Hongwu Wei, Huan
Copyright Year	2011
Abstract	The three-dimensional blade design method is adopted to design the blades of the impeller of a helico-axial multiphase pump. In this design method, the flow field of the impeller is computed with the hypothesis of multiphase homogeneous flow on the basis that it is the practical flow regime in the multiphase pump. The shape of the blade is obtained from a numerical solution of the meridian flow net the on meridional plane and blade mean camber lines on stream-surfaces of revolution. First, the contour shape and size of the meridian flow channel of the impeller blade is determined by parameterization design. Second, according to the discrete data of the contour shape, the meridian streamlines are determined by iterative computation based on solving the gas-liquid two phase meridional velocity gradient equation and the two phase coupled equations with quasi-orthogonals, and the flow parameters of the meridian flow net are computed simultaneously in order that the characteristics of the meridian fluid flow can be determined. And then the distribution of velocity moments can be obtained further. Third, the blade mean camber line equation is integrated with the point-by-point integral method, and then the blade mean camber line on the stream-surface of revolution which corresponds to every meridian streamline is obtained in order to form the shape of the impeller blade surface. At last, the meridional blade elements, which are the intersecting curves of blade shape surface with several meridional planes at different angles, and the variation of blade thickness, are determined. After that, the solid modeling of the three-dimensional blade of the impeller is formed. In addition, the characteristics of the flow field of the impeller and the performance of the multiphase pump are computed by CFD numerical simulation. The position where air blocking is tends to occur was analyzed on the basis of the result of numerical simulation.
Sponsorship	Fluids Engineering Division
Starting Page	163
Ending Page	170
Page Count	8
File Format	PDF
ISBN	9780791844403
DOI	10.1115/AJK2011-06030
Volume Number	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
Conference Proceedings	ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
Language	English
Publisher Date	2011-07-24
Publisher Place	Hamamatsu, Japan
Access Restriction	Subscribed
Subject Keyword	Solid modeling Blades Computer simulation Design methodology Computational fluid dynamics Fluid dynamics Flow (dynamics) Pump impellers Design Pumps Computation Impellers Shapes
Content Type	Text
Resource Type	Article

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