NUMERICAL AND THEORETICAL INVESTIGATION OF GAS-DYNAMIC CHARACTIRISTICS OF TURBO-EXPANDER COMPRESSOR STAGE OF COMPRESSOR UNIT WITH USING CFD-METHOD

Authors

  • Л. Ф. Ивчик OAО «Криогенмаш», пр. Ленина, 67, г. Балашиха, Московская область, РФ, 143907, Russian Federation
  • Л. Б. Лебедев OAО «Криогенмаш», пр. Ленина, 67, г. Балашиха, Московская область, РФ, 143907, Russian Federation
  • В. Н. Каньшин Инженерная компания «ТЕСИС», ул. Юннатов, 18, офис 705, г. Москва, РФ, 125083, Russian Federation

DOI:

https://doi.org/10.18198/j.ind.gases.2006.0216

Keywords:

Centrifugal compressor, Impeller, Vaned diffuser, Software ANSYS CFX, ANSYS ICEM CFD

Abstract

The results of numerical flow simulation in the centrifugal compressor with the use of software ANSYS CFX-5 are stated. The Reynolds averaged Navier-Stokes equations for compressible gas, the equations for SST turbulence model with automatic wall functions were used for simulation. The computational region has been divided into four parts according to compressor components. A high quality Hexa mesh is generated in ANSYS ICEM CFD for input impeller and diffuser. The same software is used for volute Tetra grid generation also. This type of grid generation gives better minimum skew angles. Calculations were carried out both in Pentium-4 PC, and in a parallel mode with 8-th processors Intel Xeon cluster for RedHat Linux 7.3 environment. The main regimes of compressor were investigated numerically. The results of numerical investigation are in a good agreement with experimental data. The analysis of results shows, that there are some reserves to increase compressor efficiency. The new form of a channel inducer and impeller is offered. This allows to increase а compressor efficiency and a stock of compressor stability. 

Author Biographies

Л. Ф. Ивчик, OAО «Криогенмаш», пр. Ленина, 67, г. Балашиха, Московская область, РФ, 143907

L.F. Ivchik

Л. Б. Лебедев, OAО «Криогенмаш», пр. Ленина, 67, г. Балашиха, Московская область, РФ, 143907

L.B. Lebedev

В. Н. Каньшин, Инженерная компания «ТЕСИС», ул. Юннатов, 18, офис 705, г. Москва, РФ, 125083

V.N. Konshin

Issue

No. 1 (2006): Технические газы

Section

PLANTS AND THE EQUIPMENT FOR MANUFACTURING OF AIR SEPARATION PRODUCTS AND OTHER INDUSTRIAL GASES

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