A computational study for an evaluation of the current turbulence models for the prediction of a thermal striping in a triple jet is performed. The tested turbulence models are the two-layer model, the shear stress transport model, and the elliptic relaxation model. These three turbulence models are applied to the prediction of a thermal striping in a triple jet in which detailed experimental data are available. The predicted time-averaged and root-mean-square values of the temperature are compared with the experimental data, and the capability of predicting the oscillatory behavior of the ensemble-averaged temperature is investigated. From these works, it is shown that only the elliptic relaxation model is capable of predicting the oscillatory behavior of the ensemble-averaged temperature. It is also shown that the elliptic relaxation model predicts best the time-averaged temperature and the root mean square of the temperature fluctuation. However, this model predicts a slower mixing at the far downstream of the jet.
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November 2007
Research Papers
Evaluation of Turbulence Models for Thermal Striping in a Triple Jet
Seok-Ki Choi,
Seok-Ki Choi
Fluid System Engineering Division,
e-mail: skchoi@kaeri.re.kr
Korea Atomic Energy Research Institute
, 150 Deokjin-dong, Yuseong-gu, Daejeon 305-353, Korea
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Seong-O Kim
Seong-O Kim
Fluid System Engineering Division,
Korea Atomic Energy Research Institute
, 150 Deokjin-dong, Yuseong-gu, Daejeon 305-353, Korea
Search for other works by this author on:
Seok-Ki Choi
Fluid System Engineering Division,
Korea Atomic Energy Research Institute
, 150 Deokjin-dong, Yuseong-gu, Daejeon 305-353, Koreae-mail: skchoi@kaeri.re.kr
Seong-O Kim
Fluid System Engineering Division,
Korea Atomic Energy Research Institute
, 150 Deokjin-dong, Yuseong-gu, Daejeon 305-353, KoreaJ. Pressure Vessel Technol. Nov 2007, 129(4): 583-592 (10 pages)
Published Online: October 29, 2006
Article history
Received:
March 16, 2006
Revised:
October 29, 2006
Citation
Choi, S., and Kim, S. (October 29, 2006). "Evaluation of Turbulence Models for Thermal Striping in a Triple Jet." ASME. J. Pressure Vessel Technol. November 2007; 129(4): 583–592. https://doi.org/10.1115/1.2767337
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