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Development and Application of a Local Correlation-Based Transition Model in an Unstructured Grid CFD Solver

Wang, Jingyu
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408444919

Abstract Details

, Doctor of Philosophy, University of Toledo, Mechanical Engineering.
Computational Fluid Dynamics (CFD) has been widely used in scientific research and engineering designs of aerospace vehicles. However, most Reynolds-averaged Navier-Stokes CFD applications today still assume fully turbulent flows, and so are unable to capture the boundary layer transition phenomenon. In the present study, the Local Correlation-based Transition Model (LCTM) was investigated and implemented in an unstructured CFD solver - U2NCLE, which is coupled with both one-equation Spalart-Allmaras (S-A) and two-equations Shear Stress Transport (SST) turbulence models. An innovative method was developed to evaluate the local free stream turbulence intensity for the transition model coupled with the S-A turbulence model. The current transition model was systematically validated on several benchmark cases including a flat plate with and without pressure gradients, two-dimensional airfoils, and realistic three-dimensional helicopter rotors. Both the S-A and SST based transition models were also used to predict the aerodynamic interactions in a lift fan configuration, to further explore the unsteady aerodynamic phenomena for internal viscous flows.
Chunhua Sheng (Committee Chair)
Abdollah Afjeh (Committee Member)
Glen Lipscomb (Committee Member)
Ray Hixon (Committee Member)
Terry Ng (Committee Member)
Mechanical Engineering

Recommended Citations

Citations

  • Wang, J. (n.d.). Development and Application of a Local Correlation-Based Transition Model in an Unstructured Grid CFD Solver [Doctoral dissertation, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408444919

    APA Style (7th edition)

  • Wang, Jingyu. Development and Application of a Local Correlation-Based Transition Model in an Unstructured Grid CFD Solver. University of Toledo, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408444919.

    MLA Style (8th edition)

  • Wang, Jingyu. "Development and Application of a Local Correlation-Based Transition Model in an Unstructured Grid CFD Solver." Doctoral dissertation, University of Toledo. Accessed APRIL 23, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408444919

    Chicago Manual of Style (17th edition)

toledo1408444919
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This open access ETD is published by University of Toledo and OhioLINK.