Volume 30 Issue 7
Jul.  2015
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SHI Ya-yun, BAI Jun-qiang, HUA Jun, YANG Ti-hao. Transition prediction based on amplification factorand Spalart-Allmaras turbulence model[J]. Journal of Aerospace Power, 2015, 30(7): 1670-1677. doi: 10.13224/j.cnki.jasp.2015.07.019
Citation: SHI Ya-yun, BAI Jun-qiang, HUA Jun, YANG Ti-hao. Transition prediction based on amplification factorand Spalart-Allmaras turbulence model[J]. Journal of Aerospace Power, 2015, 30(7): 1670-1677. doi: 10.13224/j.cnki.jasp.2015.07.019
shu

Transition prediction based on amplification factorand Spalart-Allmaras turbulence model

doi: 10.13224/j.cnki.jasp.2015.07.019

  • 1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072;

  • 2. Chinese Aeronautical Establishment, Aviation Industry Corporation of China, Beijing 100012, China

  • Received Date: 2015-01-04
  • Publish Date: 2015-07-28
    Abstract
  • To verify the simulation accuracy of current model coupling amplification factor transport equation with Spalart-Allmaras (S-A) turbulence model, Schubauer and Klebanoff flat plate (S-K), S809 low speed airfoil, 30p30n multi-element airfoil and complicated 3-D HiLiftPW-1 configure were selected for free transition calculation, and then, simulation results were compared with experimental results. Separately, current coupling model was compared with Langtry-Menter (L-M)transition model for S809 test cases. Test examples indicate that current coupling transition model can basically capture transition location and transition process, meanwhile, current coupling model performs better than L-M transition model in separated flow transition, and simulation accuracy increases by 10%; the maximum error of multi-element airfoil's transition position simulated is 6.5% compared with experiment data. For three dimensional high-lift configuration, comparison between full turbulence and free transition shows that considering boundary layer transition can simulate aerodynamic force coefficient more accurately and accuracy is promoted by 1%.

     

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