Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Numerical Simulation of Flows Past Two Spheres (II) -Two Spheres Arbitrarily Positioned-

2개의 구를 지나는 유동에 대한 수치 해석적 연구 (II) - 일반적인 각도로 2개의 구를 지나는 유동 -

  • 윤동혁 (인하대학교 대학원 기계공학과) ;
  • 양경수 (인하대학교 기계공학부)
  • Published : 2005.12.01
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Abstract

In this investigation, we studied the wake interactions incurred by two nearby spheres at Re=300. We considered all possible arrangements of the two spheres in terms of the distance between the spheres and, the angle inclined with respect to the flow direction. It turns out that significant changes in shedding characteristics are noticed depending on how the two spheres are positioned. In this study, not only quantitative changes in the key physical parameters such as force coefficients and shedding frequencies, but also qualitative changes in shedding patterns are analyzed and reported.

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References

  1. Xu, S. J. Zhou, Y. and So, R. M. C., 2003, 'Reynolds Number Effects on the Flow Structure Behind Two Side-by-Side Cylinders,' Phys. Fluids, Vol. 15, No.5, pp. 1214-1219 https://doi.org/10.1063/1.1561614
  2. Kang, S., 2003, 'Characteristics of Flow over Two Circular Cylinders in a Side-by-Side Arrangement at Low Reynolds Numbers,' Phys. Fluids, Vol. 15, pp. 2486-2498 https://doi.org/10.1063/1.1596412
  3. Kang, S., 2004, 'Numerical Study on Laminar Flow over Three Side-by-Side Cylinders,' KSME International Journal, Vol. 18, No. 10, pp. 1869-1879
  4. Lee, K. C., 1979, 'Aerodynamic Interaction Between Two Spheres at Reynolds Numbers Around $10^4$,' Aero. Q., Vol. 30, pp. 371-385 https://doi.org/10.1017/S000192590000857X
  5. Tsuji, Y., Morikawa, Y. and Terashima, K., 1982, 'Fluid-Dynamic Interaction Between Two Spheres,' Int. J. Multiphase Flow, Vol. 8, pp. 71-82 https://doi.org/10.1016/0301-9322(82)90008-8
  6. Zhu, C., Liang, S.-C. and Fan, L.-S.,1994, 'Particle Wake Effects on the Drag Force of an Interactive Particle,' Int. J. Multiphase Flow, Vol. 20, pp. 117-129 https://doi.org/10.1016/0301-9322(94)90009-4
  7. Chen, R. C. and Lu, Y.N., 1999, 'The Flow Characteristics of an Interactive Particle at Low Reynolds Numbers,' Int. J. Multiphase Flow, Vol. 25, pp. 1645-1655 https://doi.org/10.1016/S0301-9322(98)00082-2
  8. Chen, R. C. and Wu, J. L., 2000, 'The Flow Characteristics Between Two Interactive Spheres,' Chemical Engineering Science, Vol. 55, pp. 1143-1158 https://doi.org/10.1016/S0009-2509(99)00390-5
  9. Kim, I., Elghobashi S. and Sirignano, W. A., 1993, 'Three-Dimensional Flow over Two Spheres Placed Side by Side,' J. Fluid Mech., Vol. 46, pp. 465-488 https://doi.org/10.1017/S0022112093000229
  10. Schouveiler, L., Brydon, A., Leweke, T. and Thompson, M.C., 2004, 'Interactions of the Wakes of Two Spheres Placed Side by Side,' Eur. J. Mech. B Fluids, Vol. 23, pp. 137-145 https://doi.org/10.1016/j.euromechflu.2003.05.004
  11. Kim, J., Kim, D. and Choi, H., 2001, 'An Immersed-Boundary Finite-Volume Method for Simulations of flow in Complex Geometries,' J. Comp. Phys., Vol. 171, pp. 132-150 https://doi.org/10.1006/jcph.2001.6778
  12. Jeong, J. and Hussain, F., 1995, 'On the Identification of a Vortex,' J. Fluid Mech., Vol. 285, pp. 69-94 https://doi.org/10.1017/S0022112095000462