TY - JOUR
AU1 - Yadegari, Mitra
AU2 - Bak Khoshnevis, Abdolamir
AB - The behavior and characteristics of the wake produced behind an elliptic cylinder at 0° angle of attack, in the presence of trip wires, are investigated experimentally and numerically. For this purpose, an aluminum cylinder model with an elliptic cross section and a length of 390 mm, major diameter of 42.4 mm and minor diameter of 21.2 mm was tested in the test section of a wind tunnel. Realizable k–ε turbulence model was used for the numerical analysis and SIMPLEC algorithm was employed for pressure–velocity coupling. Reynolds numbers corresponding to the major diameter of the cylinder were 38,550 and 64,250 for air velocities of 15 m/s and 25 m/s, respectively. Turbulence trip wires of .5 mm diameter were installed symmetrically on the elliptic cylinder at angles of 23.7° and 40.9° relative to the stagnation point. The drag coefficient for the smooth elliptic cylinder was about .6 at both Reynolds numbers. Results showed a drag coefficient reduction of 75% in the best possible case. It was also concluded that a turbulence promoter wire has a significant effect on flow characteristics and reduction in the drag coefficient, and that it strongly depends on the location where the trip wire is installed on the model.
TI - Numerical and Experimental Study of Characteristics of the Wake Produced Behind an Elliptic Cylinder with Trip Wires
JF - Iranian Journal of Science and Technology, Transactions of Mechanical Engineering
DO - 10.1007/s40997-020-00373-6
DA - 2020-06-25
UR - https://www.deepdyve.com/lp/springer-journals/numerical-and-experimental-study-of-characteristics-of-the-wake-hMLEarb3A8
SP - 265
EP - 285
VL - 45
IS - 1
DP - DeepDyve
ER -