STUDY OF JUNCTION FLOW STRUCTURES WITH DIFFERENT TURBULENCE MODELS

Authors

Jun Pei Lee, Department of Systems Engineering and Naval Architecture, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.
Jiahn-Horng Chen, Department of Systems Engineering and Naval Architecture, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.Follow
Ching-Yeh Hsin, Department of Systems Engineering and Naval Architecture, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.

Abstract

In the present study, we conducted a series of computations to investigate the effects of turbulence models on the the development of horseshoe vortices for flow past a finite wing mounted on a flat plate. The cross section of the wing is a combination of a semi-ellipse at the nose and a NACA0020 airfoil at the tail which join each other at the location of maximum thickness. The Reynolds number is 5 x 105 , based on the chord length of the wing, c. The maximum thickness is 0.235c and the span of the wing is 0.75c. Both the linear and nonlinear models were employed. The former include Spalart-Allmaras model (1-equation model), standard k-ε model, realizable k-ε model, and SST k-ω model (2-equation models) and the latter are the V2-f model and the Reynolds stress model. The results show that different models may lead to significantly different numerical solutions. While some of them are closer to the experimental data, the others differ quite significantly.

Recommended Citation

Lee, Jun Pei; Chen, Jiahn-Horng; and Hsin, Ching-Yeh (2017) "STUDY OF JUNCTION FLOW STRUCTURES WITH DIFFERENT TURBULENCE MODELS," Journal of Marine Science and Technology: Vol. 25: Iss. 2, Article 19.
DOI: 10.6119/JMST-016-1116-2
Available at: https://jmstt.ntou.edu.tw/journal/vol25/iss2/19