Browse > Article
http://dx.doi.org/10.3744/SNAK.2005.42.6.608

Drag Reduction in Turbulent Channel flow with Periodically Arrayed Heating and Cooling Strips  

Yoon, Hyun-Sik (Advanced Ship Engineering Research Center, Pusan National University)
Chun, Ho-Hwan (Advanced Ship Engineering Research Center, Pusan National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.42, no.6, 2005 , pp. 608-618 More about this Journal
Abstract
A new technique giving significant drag reduction in turbulent shear flows has been proposed by using the buoyancy effect to generate periodic spanwise motion. Such spanwise motion can be obtained by arranging heating and cooling strips periodically aligned in the spanwise direction of a vertical channel, where the streamwise mean flow is perpendicular to the gravity vector The strip size has been changed in order to obtain the optimum size corresponding to the maximum drag reduction. The bulk Reynolds number, $ Re_{m} = U_{m} \delta / \nu \$ is fixed at 2270 while Grashof numbers is changed between $10^{6}$ to $10^{7}$. As Grashof number increases, considerable drag reduction can be obtained, At the highest Grashof number, an optimum strip size of about 250 wail units gives drag reduction of about 35$\%$. The greater the Grashof number, the smaller the strip size attains the maximum drag reduction.
Keywords
Drag reduction; Heating and cooling strips; Flow control; DNS;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Choi, J.I., Xu, CX and Sung, H.J., 2002, 'Drag reduction by spanwise wall oscillation in wall-bounded turbulent flows,' AIAA Journal, Vol. 40. No. 5, pp. 842-850   DOI   ScienceOn
2 Choi, K.S., DeBisschop , J.R. and Clayton, B.R., 1998, 'Turbulent Boundary-layer control by rneans of spanwise-wall oscillation,' AIAA Journal, Vol. 36. No. 7, pp. 1157-1163
3 Zang, Y., Street, R.L. and Koseff, J.R., 1994, 'A Non-Staggered Grid, Fractional Step Method for Time-Dependent Incompressible Navier- Stokes Equations in Curvilinear Coordinates,' Journal of Computational Physics Vol. 114, pp.18-33   DOI   ScienceOn
4 구본국, 윤현식, 전호환, 2004, '리블렛 표면을 이용한 난류 유동해석 및 마찰 저항감소,' 대한조선학회 논문집, 제 41 권, 제 4 호, pp. 59-67   DOI
5 김덕수, 김형태, 김우전, 2003, '미소기포 주입에 의한 마찰저항 감소에 대한 연구,' 대한조선학회 논문집, 제 40 권, 제 3 호, pp. 1-8
6 김형태, 김덕수, 김우전, 2003, '폴리머 수용액 주입에 의한 난류마찰저항 감소에 대한 실험 연구,' 대한조선학회 논문집, 제 40 권, 제 3 호, pp. 9-15   DOI
7 장진호, 김효철, 1999, '선저에 부착된 공기 공동에 의한 선박의 저항감소에 관한 연구,' 대한조선학회 논문집, 제 36권, 제 2호, pp. 1-8
8 Choi, K.S., 2002, 'Near-wall structure of turbulent boundary layer with spanwise-wall oscillation,' Phys. Fluids, Vol. 14, No. 7, pp 2530-2542   DOI   ScienceOn
9 Baron, A. and Quadrio, M., 1996, 'Turbulent Drag Reduction by Spanwise Wall Oscillation,' Applied Scientific Research, Vol. 55, pp. 311- 326   DOI   ScienceOn
10 Bradshaw, P. and Pontikos, N., 1985, 'Measurements in the turbulent boundary layer on an 'infinite' swept wing,' J. of Fluid Mechanics, Vol. 159, pp. 105-130   DOI   ScienceOn
11 Dhanak, M.R. and Si, C., 1999, 'On reduction of turbulent wall friction through spanwise wall oscillations,' J. of Fluid Mechanics, Vol. 383, pp. 175-195   DOI   ScienceOn
12 Jung, W.J., Mangiavacchi, N. and Akhavan, R., 1992, 'Suppression of turbulence in wall-bounded flows by high-frequency spanwise oscillations', Phys. Fluids A, Vol. 4, No. 8, pp. 1605-1607   DOI
13 Karniadakis, G.E. and Choi, K.S., 2003, 'Mechanisrns on transverse rnotions in turbulent wall flows,' Annual Review of Fluid Mechanics, Vol. 35, pp. 45-62   DOI   ScienceOn
14 Laadhari, F., Skandaji, L. and Morel, R., 1994, 'Turbulence reduction in a boundary layer by a local spanwise oscillating surface,' Phys. Fluids Vol. 6, NO. 10, pp. 3218-3220   DOI   ScienceOn
15 Lee, D.H. and Choi, H.C. 2001, 'Magnetohydro -dynamic turbulent flow in a channel at low rnagnetic Reynolds number,' J. of Fluid Mechanics, Vol. 439, pp. 369-394
16 Kim, J., 2003, 'Control of turbulent boundary layers', Phys. Fluids, Vol. 15, No. 5, pp. 1093-1105   DOI   ScienceOn
17 Moin, P., Shih, T., Driver, D. and Mansour, N., 1990, 'Direct numerical simulation of three dimensional turbulent boundary layer,' Phys. Fluids A, Vol. 2, No. 10, pp. 1846-1853   DOI
18 Park, J. and Choi, H., 1999, 'Effects of uniform blowing or suction from a spanwise slot on a turbulent boundary layer,' Phys. Fluids, Vol. 11, pp. 3095-3105   DOI
19 Quadrio, M. and Sibilla, S., 2000, 'Numerical Simulation of Turbulent Flow in a Pipe Oscillating Around Its Axis,' J. of Fluid Mechanics, Vol. 424, pp. 217- 241   DOI   ScienceOn
20 윤현식, 구본국, Osama A. EI-Samni, 박종천, 전호환, 2004, '마찰저항감소를 위한 난류유동의 DNS/LES 해석기술의 개발,' 대한조선학회 논문집, 제 41 권, 제 1 호, pp. 47-54
21 Kirn, J. and Moin, P., 1985, 'Application of a Fractional Step Method to Incompressible Navier-Stokes Equations,' Journal of Computational Physics, Vol. 59, pp. 308- 323   DOI   ScienceOn