Fluid Mechanics & Aerodynamics

Fluid Mechanics & Aerodynamics

Simulation and testing of fluid behavior in the compressor for redesign in the operational area of Nar

Document Type : Original Article

Authors
Majid Jabbari 1
Davood Naghiha 2
1 Assist. Prof., Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr/Isfahan, Iran
2 Master, Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr/Isfahan, Iran
Abstract
According to the need to redesign the 4-stage compressor, dynamic analysis of the fluid in the compressor rotor is needed. Since it is very difficult to access such compressors in practice, by preparing a complete model of the compressor rotor by drawing and mapping and a three-dimensional model, simulating the behavior of the fluid on the rotor including the pressure profile between the blades and the flow rate. volume and output are obtained. The results of the simulation have been compared with the experimental results of the current compressor performance including different types of compressor performance data. Then, by simulating the redesigned compressor, its performance is investigated. According to the obtained results, the maximum Mach number occurs at the inlet of the blades and in the diffusers also at the inlet of the diffusers, therefore, to control the Mach number, it is sufficient to control the Mach number only at the inlet of the blade and the inlet of the diffuser. It is also possible to consider the last stage Impeller about 10% shorter. The obtained results are used to obtain the strength and service life of the redesigned rotor.
Keywords
Compressor
Rotor
Fluid Dynamic
Redesign

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  1. 1.HamzaZahed, A., and Bayomi, N. N. “Design Procdure of Centrifugal Compressor”, J. Science. Tech. Vol. 10, No. 17, pp. 77-91, 2014.

    1. Marefat, H. A., Shahhosseini, M. R., and Ashjari, M. A. “Adapted Design of Multistage Centrifugal Compressor and Comparison with Available Data”, Int. J. Mat. Mech. Man. Vol. 1, No. 2, 2013.
    2. Kurauchi, S. K., and Barbosa, J. R. “Design of Centrifugal Compressor for natural gas”, Ther. Eng. Vol. 12, No. 2, pp. 40-45, 2013.
    3. Ding, M. Y., Groth, C., Kacker, S., and Roberts, D. “CFD Analysis of Off-design Centrifugal Compressor Operation and Performance”, ASME. Turbo. Expo, 2006.
    4. Li, P. Y., Gu, C. W., and Song, Y. “A New Optimization Method for Centrifugal Compressors based on 1D Calculations and Analyses”, Energies. Vol. 8, pp. 4317-4334, 2015.
    5. Ismail, K.A.R., Roselen, C.V.A.G., Benevenuto, F. J., and Lucato, D. “Small Radial Compressors: Aerodynamic Design and Analysis”, Int. J. Rot. Mach. Vol. 4, No. 3, pp. 189-200, 1998.
    6. Czarnecki, M. “Reverse Enginnering of Centrifugal Compressor Flow Map”, J. Kones. Power. Transport. Vol. 21, No. 4, 2014.
    7. Govoruschenko, L. M. U., Pagur, P., and Romaneko, L. “Integrated Conceptual Design Environment for Centrifugal Compressors Flow Path Design”, Proceedings, IMECE2008-69122, 2008.

    9. Shahani, A.,  and Ismailpour Hajilak, Z,. "Simulation of crack growth in T56 jet engine compressor blade using Raju-Newman semi-analytical method", Mechanik Modares. Volume 17, Number 11, pp. 21-30 February 2016.

    1. Galerkin, Y., Rekstin, A., and Soldatova, K. “Aerodynamic Designing of Supersonic Centrifugal Compressor Stages”, Inter. J. Mech. Aero. Ind, Mech. Man. Eng. Vol.9, No.1, 2015
    2. Albusaidi, W., and Pilidis, P. “An Iterative Method to Derive the Equivalent Centrifugal Compressor Performance at Various Operating Conditions: Part I: Modelling of Suction Parameters Impact”, J. Energies. Vol. 8, pp. 8497-8515, 2015.
    3. Reid, L., and Moore, R.D. “Design and Overall Performance of Four Highly-Loaded, High-Speed Inlet Stages for an Advanced High-Pressure-Ratio Core Compressor”, NASA. TP. 1337, 1978.
    4. Menter, F.R., Langtry, R., and Hansen, T. “CFD Simulation of Turbo machinery Flows Verification, Validation and Modeling”, Euro Cong. Comp. Meth. Applied Sciences. Eng. 2004.
    5. Dunham, J. “CFD Validation for Propulsion System Components”, Agard-AR-355, 1998.
    6. ANSYS, Ltd. “CFX-5 Reference Guide”, Waterloo, Ontario, Canada, 2004.
Fluid Mechanics & Aerodynamics
Volume 12, Issue 1 - Serial Number 31
Spring and Summer
October 2023
Pages 11-23

  • Receive Date 10 March 2023
  • Revise Date 22 July 2023
  • Accept Date 29 July 2023
  • Publish Date 25 August 2023