TY - GEN
T1 - A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder
AU - Dash, S. M.
AU - Chavda, S. D.
AU - Lua, Kim Boon
N1 - Publisher Copyright:
© 2020, Springer Nature Singapore Pte Ltd.
PY - 2020/11/8
Y1 - 2020/11/8
N2 - In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.
AB - In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.
KW - Drag reduction
KW - Flow separation control
KW - Semicircular cylinder
KW - Single splitter plate
UR - http://www.scopus.com/inward/record.url?scp=85079173034&partnerID=8YFLogxK
U2 - 10.1007/978-981-15-0124-1_11
DO - 10.1007/978-981-15-0124-1_11
M3 - Conference contribution
AN - SCOPUS:85079173034
SN - 9789811501234
T3 - Lecture Notes in Mechanical Engineering
SP - 97
EP - 105
BT - Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018
A2 - Biswal, B.B.
A2 - Sarkar, Bikash Kumar
A2 - Mahanta, P.
PB - Springer
T2 - International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018
Y2 - 8 November 2018 through 10 November 2018
ER -