Numerical Modeling of the Flow in a Vaneless Diffuser of Centrifugal Compressor Stage

Mykola Kalinkevych; Oleg Shcherbakov

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Numerical Modeling of the Flow in a Vaneless Diffuser of Centrifugal Compressor Stage

机译：离心式压缩机级无叶片扩压器内流动的数值模拟

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This paper presents the results of numerical investigation of the flow in a vaneless diffuser of centrifugal compressor stage. Simulations were performed using both a commercial CFD package ANSYS CFX and the own-designed computer program. Steady conditions involving SST turbulence model were used for the calculations using CFX. To consider the interaction between impeller and diffuser, not just a diffuser but the whole stage was calculated. The own-designed methodology is based on solving of conservation equations with assumptions that flow in a diffuser is steady state and axisymmetric. The flow area is divided into the flow core and boundary layers. Results of calculation were compared with experimental data.

机译：本文介绍了离心压缩机级无叶扩压器中流动的数值研究结果。使用商业CFD软件包ANSYS CFX和自己设计的计算机程序进行了仿真。涉及SST湍流模型的稳态条件用于使用CFX进行的计算。为了考虑叶轮和扩散器之间的相互作用，不仅要计算扩散器，还要计算整个阶段。自行设计的方法基于保守方程的求解，并假设扩散器中的流动为稳态且轴对称。流动区域分为流动核心层和边界层。将计算结果与实验数据进行比较。

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《ISRN Mechanical Engineering》 |2013年第12期|共页
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Mykola Kalinkevych; Oleg Shcherbakov;
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1. Experimental and numerical investigation of the flow in a vaneless diffuser of a centrifugal compressor stage, Part 2: numerical investigation [J] . T. Sato, J. M. Oh, A. Engeda Proceedings of the Institution of Mechanical Engineers, Part C. Journal of mechanical engineering science . 2005,第c10期

机译：离心压缩机级无叶扩压器中流动的实验和数值研究，第2部分：数值研究
2. Experimental and numerical investigation of the flow in a vaneless diffuser of a centrifugal compressor stage, Part 1: experimental investigation [J] . T. Sato, J. M. Oh, A. Engeda Proceedings of the Institution of Mechanical Engineers, Part C. Journal of mechanical engineering science . 2005,第c10期

机译：离心式压缩机级无叶扩压器中流动的实验和数值研究，第1部分：实验研究
3. Investigation of the Stage Performance and Flow Fields in a Centrifugal Compressor with a Vaneless Diffuser [J] . Ahti Jaatinen-Varri, Aki Gronman, Teemu Turunen-Saaresti, International Journal of Rotating Machinery . 2014,第Null期

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4. Influence of Definition of Impeller-Vaneless Diffuser Boundary on Physical Validity of Numerical Simulations of Viscid Flow in the Vaneless Diffuser of a Centrifugal Compressor: a Short Review of Case Studies [C] . K. Kabalyk, W. Kryllowicz Meeting of Departments of Fluid Mechanics and Thermomechanics . 2017

机译：叶轮无差分扩散器边界定义对离心式压缩机无差漫射器数值模拟物理有效性的影响：案例研究的简短回顾
5. A Local Flow Angle Approach to Centrifugal Compressor Vaneless Diffuser Stability. [D] . Clarke, Christopher. 2016

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7. Numerical Modeling of the Flow in a Vaneless Diffuser of Centrifugal Compressor Stage [O] . Mykola Kalinkevych, Oleg Shcherbakov 2013

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Numerical Modeling of the Flow in a Vaneless Diffuser of Centrifugal Compressor Stage

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