A quasi-one-dimensional model for the centrifugal compressors performance simulations

A quasi-one-dimensional model for the centrifugal compressors performance simulations

Wenhai DuYucheng Li Longfei Li Giulio Lorenzini

Beijing Institute of Petrochemical Technology, Department of Mechanical Engineering, Qingyuan North Road 19, Daxing District, Beijing 102617, China

University of Parma, Department of Engineering and Architecture, Parco Area delle Scienze 181/A, Parma 43124, Italy

Corresponding Author Email: 
14 December 2017
24 April 2018
30 June 2018
| Citation



This paper presents a quasi-one-dimensional numerical tool to simulate the performance of the centrifugal compressors. The current model is especially useful since it could offer the reliable prediction for the centrifugal compressor performance only based on the simple geometries. An adapted version of the Euler equations solved at mid-span by a time-marching, finite-volume method, is applied in the model. The inviscid effect, the viscous effect and the geometry variation effect in the centrifugal compressor are expressed by the source terms in the Euler Equations. In the study, different loss sources in the centrifugal compressor are analyzed and estimated by empirical correlations. Two different centrifugal compressors are applied to validate the current model and the numerical simulations are compared to experimental data. The results suggest that the model provides a valuable tool for evaluating the centrifugal compressor performance during the preliminary design and optimization process.


centrifugal compressor, quasi-one-dimensional, numerical simulation, loss models

1. Introduction
2. Model Equations
3. Equation Solver
4. Numerical Simulation
5. Conclusions

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