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Analysis of the Unsteady Flow in an Aspirated Counter-Rotating Compressor Using the Nonlinear Harmonic Balance Method

GUIDOTTI, EMANUELE
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218690946

Abstract Details

2008, MS, University of Cincinnati, Engineering : Aerospace Engineering.
A multistage frequency domain (nonlinear harmonic) Navier-Stokes unsteady flow solver has been used to analyze the flow field in the MIT (rotor/rotor) counter-rotating compressor. The numerical accuracy and computational efficiency of the nonlinear harmonic method implemented in the CFD code Numeca Fine/Turbo has been demonstrated by comparing predictions with experimental data and nonlinear time-accurate solutions for the test case. The comparison is good, especially considering the big saving in time with respect to a time accurate simulation. Details of the flow field are presented and a physical explanation is provided. Also, suggestions and recommendations on the use of the harmonic balance method are provided. It is concluded that the development of efficient frequency domain approaches enables unsteady flow predictions to be used in the design of modern turbomachines.
Mark Turner (Committee Chair)
Paul Orkwis (Committee Member)
Shaaban Abdallah (Committee Member)
123 p.
Energy
cfd; turbomachinery; harmonic balance

Recommended Citations

Citations

  • GUIDOTTI, E. (2008). Analysis of the Unsteady Flow in an Aspirated Counter-Rotating Compressor Using the Nonlinear Harmonic Balance Method [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218690946

    APA Style (7th edition)

  • GUIDOTTI, EMANUELE. Analysis of the Unsteady Flow in an Aspirated Counter-Rotating Compressor Using the Nonlinear Harmonic Balance Method. 2008. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218690946.

    MLA Style (8th edition)

  • GUIDOTTI, EMANUELE. "Analysis of the Unsteady Flow in an Aspirated Counter-Rotating Compressor Using the Nonlinear Harmonic Balance Method." Master's thesis, University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218690946

    Chicago Manual of Style (17th edition)

ucin1218690946
840
© 2008, some rights reserved.Creative Commons License Analysis of the Unsteady Flow in an Aspirated Counter-Rotating Compressor Using the Nonlinear Harmonic Balance Method by EMANUELE GUIDOTTI is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Cincinnati and OhioLINK.