Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
권호 표지
DOI QR코드

DOI QR Code

The Variation of the Wake behind a Circular Cylinder Having Arc Grooves

Groove에 의한 원주 후류의 유동구조 변화

  • Published : 2008.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The measurements of velocity vectors are made in the wake(X/d=8) of a circular cylinder with arc grooves. The experiments are conducted by changing the groove number. groove depth, Reynolds number(Re) and the angle of the first formed groove. We know that the optimum groove angle is 70 degree and the wake velocity profiles are improved at a few conditions. According to vortex shedding frequency distributions. the key solutions to vary the flow field behind the circular cylinder are 70 degree groove angle and more deeper grooves than 0.2mm depth.

Keywords

References

  1. Bearman, P.W. and Trueman, D.M., 1972, 'An Investigation of the Flow around Rectangular Cylinders', aeronaut.q, Vol. 23, pp.229-237
  2. Kim, Gyeong-Cheon, Boo, Jung-Sook Lee, Sang-Uk, Gu, Myeong-Seop, 1996, 'Control of vortex shedding from circular cylinder by acoustic excitation', Transactions of KSME B, Vol. 20, No. 5, pp.1649-1660
  3. Igarashi T., 1986, 'Effect of Tripping Wires on the Flow around a circular cylinder normal to airstream', Bulletin of JSME, Vol. 29, No. 255, pp.1917-1924
  4. Price. P., 1956, 'Suppression of the Fluid-Induced Vibration of Circular Cylinders.', Proc. ASCE, Journal of Eng. Mech. Div., July 1956, pp.1030-1-1030-21
  5. P. W. Bearman and J. K. Harvey, 1993, 'Control of circular cylinder flow by the use of dimples', AIAA Journal, Vol. 31 No. 10, pp.1753-1756 https://doi.org/10.2514/3.11844
  6. K-D Ro, J-T Park,, 2002, 'Drag Reduction Characteristics of Cylinder Having Square Dimpled Surface', Journal of KSME, Vol. 26, No. 2, pp.233-239
  7. Kimura, Takeyoshi; Tsutahara, Michihisa, 1991, 'Fluid dynamic effects of grooves on circular cylinder surface', AIAA Journal, Vol. 29, pp.2062-2068 https://doi.org/10.2514/3.10842
  8. TAKAYAMA SHINICHI, SHIMADA TAKUYA, AOKI KATSUMI, 2004, 'Drag Reduction Mechanism of a Circular Cylinder by Arc Grooves', Transactions of JSME B, Vol. 70, No. 697, pp.2363-2370 https://doi.org/10.1299/kikaib.70.2363
  9. Tyler W. Robarge., Aaron M. Stark., et al., 2004, 'Design Considerations for Using Indented Surface Treatments to Control Boundary Layer Separation', 42nd AIAA Aerospace Sciences Meeting and Exhibit, AIAA 2004-425