Orel, Orel, Russian Federation
The peculiarities in current and kinematics of hydromechanical processes in centrifugal (rotary) pumps are considered. The theoretical description and graphical presentation of velocity profiles in an impeller are shown. A complex current in an impeller is described with the aid of a continuity equation and Navier-Stokes equation for rotating coordinates. A nonviscous character of fluid flow in the setting of an im-peller is taken into account by means of averaging of the equation of motion for that purpose the equation of a turbulence model is introduced in addition. The scheme of the digitization of a modeling area with the aid of a volumetric endelement grid is presented. As an example a computer model as a part of an impeller is shown.
hydromechanical process, centrifugal pumps, velocity profile, triangle of velocities, finite volume method, turbulent conditions, boundary layer, meridian section.
1. Mikhailov, А. К. Rotary Pumps. Theory, Computation, and Design / А. К. Мikhailov, V. V. Мalyushenko. - М.: mechanical Engineering, 1977.
2. Shlichting, G., Boundary Layer Theory / G. Shich-tling. - М.: Science, 1974. - pp. 712.
3. Eisenstein, М. D., Centrifugal Pumps for Petroleum Industry / М.D. Eisenstein. - М.: Gostoptechizdat, 1957. - pp. 358.
4. Wilcox, D.C. Turbulence Modeling for CFD / D.C. Wilcox. - 1993.
5. Bardina J.E. Turbulence Modeling Validation, Testing and Development / J.E. Bardina, P.G. Huang, T.J. Coakley // NASA reports. - April 1997.
6. Gűlich, J. F. Centrifugal Pumps / Johann Friedrich Gűlich. - Springer-Verlag Berlin Heidelberg, 2008, 2010. - 964 p.
7. Anderson, D. Computer Hydrodynamics and heat Exchange: [translated from Engl.] in 2 Vol. / D. Anderson, J. Tanneheel, R. Pletcher. - М.: World, 1990. - pp. 384.
8. Lewis, R.W. Fundamentals of the Finite Element Method for Heat and Fluid Flow / R.W. Lewis, P. Nithiarasu, K.N. Seetharamu. - Wiley, 2004.
9. Zienkiewicz, O.C. The Finite Element Method. Fluid Dynamics / O.C. Zienkiewicz, R.L. Taylor // Fifth edition, Butterworth-Heinemann, 2010.
