Numerical investigation of hydroacoustic pressure pulsations due to rotor-stator interaction in the Francis-99 turbine

被引：2

作者：

Platonov, D. ^{[1
,2
]}

Minakov, A. ^{[1
,2
]}

Sentyabov, A. ^{[1
,2
]}

机构：

[1] Siberian Fed Univ, Svobodniy 79, Krasnoyarsk 660079, Russia

[2] Inst Thermophys SB RAS, Lavrentyeva 1, Novosibirsk 630090, Russia

来源：

FRANCIS-99: FLUID STRUCTURE INTERACTIONS IN FRANCIS TURBINES | 2019年 / 1296卷

关键词：

Francis turbine; numerical simulation; pressure pulsation; the precession of the vortex rope; turbulence; CFD; LES; hydroacoustic;

D O I：

10.1088/1742-6596/1296/1/012009

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The paper deals with the numerical simulation of the flow in the Francis-99 hydraulic turbine at three different problem formulations, namely, the application of the method of rotating coordinate system, sliding mesh model, and consideration of a compressible fluid. The pulsations intensity and pressure pulsation spectra obtained by numerical simulation and experimentally are compared. It is shown that the simulation of a problem considering compressible fluid, and that conducted by the sliding mesh method gives significantly greater pressure amplitudes. It is also shown that the precessing vortex core is a source of pressure waves in the entire turbine flow path.

引用

页数：9

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