Korean Journal of Chemical Engineering, Vol.23, No.6, 874-880, November, 2006
The onset of Taylor-Gortler vortices in the time-dependent Couette flow induced by an impulsively imposed shear stress
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The onset of Taylor-Gortler instability induced by an impulsively started rotating cylinder with constant shear stress was analyzed by using propagation theory based on linear theory and momentary instability concept. It is well-known that the primary transient Couette flow is laminar but secondary motion sets in when the inner cylinder velocity exceeds a certain critical value. The dimensionless critical time τc to mark the onset of instability is presented here as a function of the modified Taylor number T. For the deep-pool case of small τ, since the inner cylinder velocity increases as Vi∝√t in the present impulsive shear system, the present system is more stable than impulsive started case (Vi=constant). Based on the present τc and the Foster’s [1969] comment, the manifest stability guideline is suggested.
- Chadrasekhar S, Hydrodynamic and hydromagnetic stability, Oxford University Press (1961)
- Carslaw HS, Jaeger JC, Conduction of heat in solids, 2nd ed., Oxford University Press (1959)
- Chen CF, Christensen DK, Phys. Fluids, 10, 1845 (1967)
- Chen CF, Kirchner RP, J. Fluid Mech., 48, 365 (1971)
- Choi CK, Kang KH, Kim MC, Hwang IG, Korean J. Chem. Eng., 15(2), 192 (1998)
- Choi CK, Park JH, Park HK, Cho HJ, Chung TJ, Kim MC, Int. J. Therm. Sci., 43, 817 (2004)
- Foster TD, Phys. Fluids, 12, 2482 (1969)
- Hwang IG, Choi CK, J. Cryst. Growth, 162, 182 (1996)
- Kang KH, Choi CK, Phys. Fluids, 9, 7 (1997)
- Kang KH, Choi CK, Hwang IG, AIChE J., 46(1), 15 (2000)
- Kasagi N, Hirata N, Stability of time-dependent flow around a rotating cylinder, Proc. Joint JSME-ASME Applied Mechanics Conference, pp. 431-438 (1975)
- Kim MC, Park HK, Choi CK, Theoret. Comput. Fluid Dynamics, 16, 49 (2002)
- Kim MC, Chung TJ, Choi CK, Theoret. Comput. Fluid Dynamics, 18, 105 (2004)
- Kim MC, Chung TJ, Choi CK, Korean J. Chem. Eng., 21(1), 69 (2004)
- Kim MC, Park JH, Choi CK, Chem. Eng. Sci., 60(19), 5363 (2005)
- Kim MC, Choi CK, Korean J. Chem. Eng., 21(4), 767 (2004)
- Kim MC, Park JH, Choi CK, Chem. Eng. Sci., 60(19), 5363 (2005)
- Kirchner RP, Chen CF, J. Fluid Mech., 40, 39 (1970)
- Liu DCS, Physical and numerical experiments on time-dependent rotational Couette flow, Ph.D. Thesis, Rutgers University, New Jersey (1971)
- MacKerrell SO, Blennerhassett PJ, Bassom AP, Phys. Fluids, 14, 2948 (2002)
- Otto SR, IMA J. Appl. Math., 51, 13 (1993)
- Schweizer PM, Scriven LE, Phys. Fluids, 26, 619 (1983)
- Shen SF, J. Aerosol Sci., 28, 397 (1961)
- Tan KK, Thorpe RB, Chem. Eng. Sci., 58(1), 149 (2003)
- Walowit J, Tsao S, DiPrima RC, Trans. ASME: J. Appl. Mech., 31, 585 (1964)
- Yang DJ, Choi CK, Phys. Fluids, 14, 930 (2002)
- Yeckel A, Derby JJ, J. Cryst. Growth, 209, 734 (2000)
- Yoon DY, Choi CK, Korean J. Chem. Eng., 6, 144 (1989)