Numerical studies of flow at the spiral case of a radial-axial hydromachine

Authors

  • Олег Николаевич Хорев Institute of Mechanical Engineering Problems. AN Podgorny NAS, str. Dm. Pozharsky, 2/10, Kharkov, Ukraine, 61046, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.9429

Keywords:

numerical simulation, viscous flow, spiral case, hydromachine.

Abstract

The article represents the results of the numerical study of the spatial flow of an incompressible viscous fluid in the spiral case of the reversible radial-axial hydromachine, designed for head Н=200 m, in turbine mode. The spiral case with the angular coverage for φсп=360° had round meridian sections, calculated according to the law of constancy of the velocity moment Vur=const.
The calculations were performed using the software package FlowER-U for the model with the working wheel diameter D1=350mm at the head H=1m. The studies were conducted for the numerical area taking into account or not the stator columns. The number of cells in the grid was about 1.2 million
The numerical studies permitted to obtain the distribution of the absolute velocity and its components: the circuit, radial and axial velocities, and the angle of flow, created by a spiral case in typical sections. The analysis of the impact of the presence of the columns on characteristics of the stator flow was carried out. The comparison of the calculated data with the results of gavages studies on hydrodynamic stand showed good quantitative and qualitative agreement.

Author Biography

Олег Николаевич Хорев, Institute of Mechanical Engineering Problems. AN Podgorny NAS, str. Dm. Pozharsky, 2/10, Kharkov, Ukraine, 61046

Ph.D., Senior Research Fellow

Department hydroaeromechanics power machines

References

  1. Русанов, А.В. Численное моделирование течений вязкой несжимаемой жидкости с использованием неявной квазимонотонной схемы Годунова повышенной точности [Текст] / А.В. Русанов, Д.Ю. Косьянов // Восточно-Европейский журнал передовых технологий. − 2009. − №5. − С. 4−7.
  2. Menter F.R. Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications // AIAA J. − 1994. − 32, №8. − P. 1598 − 1605.
  3. Русанов, А.В. Математическое моделирование нестационарных газодинамических процессов в проточных частях турбомашин [Текст] / А.В. Русанов, С.В. Ершов [Монография]. − Харьков: Ин-т пробл. машиностроен. НАН Украины, 2008. − 275 с.
  4. Сухоребрый, П.Н. Исследование спиральной камеры, статора и направляющего аппарата радиально-осевой гидромашины средней быстроходности: Автореф. дисс. канд. техн. Наук [Текст] / П.Н. Сухоребрый // Харьковский политехнический институт.– Х., 1982. –23 с.

Published

2013-02-05

How to Cite

Хорев, О. Н. (2013). Numerical studies of flow at the spiral case of a radial-axial hydromachine. Eastern-European Journal of Enterprise Technologies, 1(8(61), 41–45. https://doi.org/10.15587/1729-4061.2013.9429

Issue

Section

Energy-saving technologies and equipment