

A NUMERICAL AND EXPERIMENTAL STUDY OF THE FLOW IN THE HYDRAULIC TURBINE
Dekterev D.A.^{1,2}, Platonov D.V.^{1,2}, Minakov A.V.^{1,2}
^{1} Institute of Thermophysics SB RAS, Novosibirsk, Russia ^{2} Siberian Federal University, Krasnoyarsk, Russia
Citation:
Dekterev, D.A., Platonov, D.V. and Minakov, A.V., (2015) A numerical and experimental study of the flow in the hydraulic turbine, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(16), PP. 106  109.

Keywords: numerical simulation; hydraulic turbine; swirling flows 
Abstracts:
The experimental stand which completely reproduces the flow path of the hydraulic turbine РО230/833В677 on a scale of 1 / 67.6 was constructed. An experimental studies on the model of the turbine made it possible to obtain pulsation characteristics and distribution of speed behind the wheel of hydraulic turbine. The presence of precessing vortex in a number of modes of hydraulic turbine model is observed. The experimental results were used for the verification of the mathematical model. An efficient numerical method of modeling processes of hydrodynamics swirling flows in turbines can reproduce integral and pulsation characteristics of the turbine with the necessary precision. A numerical technique is versatile and can be easily adapted to the geometry of the flow path of any real hydraulic turbines. The results of the simulation of unsteady threedimensional flow in the flow path of the РО140/0942В625 and РО230/833В677are presented. 
References:
A.K. Gupta, D.G. Lilley, N. Syred, Swirl flows. Abacus Press, Kent, England, 1984, p 475
Theory of Concentrated Vortices: An Introduction, S.V. Alekseenko, P.A. Kuibin, V.L. Okulov, 2010, 494 p., Springer Berlin Heidelberg, 2010 .
Spalart, P.R. Comments on the feasibility of LES for wing and on a hybrid RANS/LES approach. 1st ASOSR CONFERENCE on DNS/LES. Arlington, TX., 1997.
A.V. Minakov, D.V. Platonov, A.A. Dekterev, A.V. Sentyabov, A.V. Zakharov. The numerical simulation of low frequency pressure pulsations in the highhead Francis turbine Computers & Fluids. 2015. doi:10.1016/j.compfluid.2015.01.007
D.V. Platonov, A.V. Minakov, A.V. Sentyabov, A.A. Dekterev, A.A. Gavrilov, Numerical modeling of flow in the Francis99 turbine with Reynolds stress model and detached eddy simulation method. Journal of Physics: Conference Series. 2015. Volume 579 doi:10.1088/17426596/579/1/012004.


