Volume 32 Issue 11
Nov.  2017
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CFD simulations of jet in crossflow with modified SA turbulence model[J]. Journal of Aerospace Power, 2017, 32(11): 2761-2768. doi: 10.13224/j.cnki.jasp.2017.11.025
Citation: CFD simulations of jet in crossflow with modified SA turbulence model[J]. Journal of Aerospace Power, 2017, 32(11): 2761-2768. doi: 10.13224/j.cnki.jasp.2017.11.025
shu

CFD simulations of jet in crossflow with modified SA turbulence model

doi: 10.13224/j.cnki.jasp.2017.11.025
  • Received Date: 2016-04-20
  • Publish Date: 2017-11-28
    Abstract
  • In order to improve the accuracy of simulating jet in crossflow(JICF), SpalartAllmaras (SA) turbulence model was improved by introducing strain rate tensor into the turbulence production term because of the significant influence of shear in JICF. The JICF with velocity ratios of 05 and 15 was simulated by the modified SA turbulence model. According to the validation with experimental data, the results showed that accuracy of predicting JICF with modified SA model was promoted; mechanism of the modified parts in S-A model was also analyzed. Modified S-A model, k-ε model, Reynolds stress model(RSM) and large eddy simulation(LES) were compared in the simulations of JICF. The results showed that the modified S-A model performed best at the velocity ratio of 0.5, and had a similar accuracy to other models at the velocity ratio of 1.5; in addition, the results were analyzed reasonably.

     

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