Share This Article:

Flip-Flop Flow Control inside Streamwise Diverging Diamond-Shaped Cylinder Bundles with Concavities

Abstract Full-Text HTML XML Download Download as PDF (Size:402KB) PP. 77-85
DOI: 10.4236/jfcmv.2013.13010    2,962 Downloads   5,499 Views   Citations

ABSTRACT

The flow visualization work with the aid of PIV and Piezometer deals with flip-flop flow around diamond-shaped cylinder bundle revised with concavities on both bundle walls. It is disclosed that 1) the concavity constructed on both side-walls of a diamond cylinder induces a substantial change in the flow patterns in the exit jet-stream field and jet- stream dispersion, 2) pressure characteristics are quantitatively measured in a diverging-flow region in diamond cylinder bundles with concavityand in its downstream region, and 3) flip-flop flow occurs in the flow passages and its occurrence condition is obtained.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Torii and S. Umeda, "Flip-Flop Flow Control inside Streamwise Diverging Diamond-Shaped Cylinder Bundles with Concavities," Journal of Flow Control, Measurement & Visualization, Vol. 1 No. 3, 2013, pp. 77-85. doi: 10.4236/jfcmv.2013.13010.

References

[1] H. Viets, “Flip-Flop Jet Nozzle,” AIAA Journal, Vol. 13, No. 10, 1975, pp. 1375-1379. http://dx.doi.org/10.2514/3.60550
[2] S. Umeda, S. Hasegawa and W.-J. Yang, “Occurrence of Flip-Flop Flows in Diamond-Shaped Cylinder Bundles,” Journal of Environment and Engineering, Vol. 2, No. 1, 2007, pp. 1-12. http://dx.doi.org/10.1299/jee.2.1
[3] S. Umeda, Patent No. 2841173, Japan, 1998.
[4] S. Umeda, Patent No. 4093272, Japan, 2008.
[5] N. Zhang, W.-J. Yang and Y. Xu, “Flow Characteristics in Flow Networks,” Experiments in Fluids, Vol. 14, No. 1, 1993, pp. 25-32. http://dx.doi.org/10.1007/BF00196984
[6] S, Umeda, W.-J. Yang and T. Tanaka, “Mechanics and Correlations of Flow Phenomena in Intersecting Ducts,” Experiments in Fluids, Vol. 17, No. 5, 1994, pp. 323-329. http://dx.doi.org/10.1007/BF01874412
[7] S. Umeda and W.-J. Yang, “Flow Visualization Methods in Intersecting Ducts,” Journal of Flow Visualization and Image Processing, Vol. 1, No. 3, 1993, pp. 159-170.
[8] W.-J. Yang and S. Umeda, “Coanda Effect and Its Role in Mixing in Intersecting Flow,” Proceedings of CSME FORUM SCGM 1998, Vol. 1, 1998, pp. 147-152.
[9] S. Umeda and W.-J. Yang, “Dynamic Behavior of Shear Layer in Intersecting Ducts,” 9th International Symposium on Transport Phenomena in Thermal-Fluid Engineering, Singapore, 1996, pp. 784-788.
[10] S. Umeda, W.-J. Yang and C.-S. Wu, “Reciprocating Bubble Migration and Flip-Flop Phenomena in Multiple Flow Networks,” Proceedings of 11th International Symposium on Transport Phenomena, Hsinchu, 1998, pp. 415-420.
[11] S. Umeda, A. Taniguchi, S. Hasegawa and W.-J. Yang, “Flow Instability in Diverging-Flow Region with Flip-Flop Phenomenon inside Diamond-Shaped Cylinder Bundles, FEDSM2003-45133, Honolulu, 2003, pp. 1-6.
[12] S. Umeda and W.-J. Yang, “Diagnosis of Intersecting Flow—On Visualization of Flow Networks,” Kyoritsu Publishing Co. Ltd., Tokyo, 2007, pp. 1-11.
[13] S. Umeda, K. Iijima, K. Shinmura and W.-J. Yang, “Effect of Wall Concavity on Oscillations of Jet Streams from Diamond-Shaped Cylinder Bundle,” Journal of Flow Visualization and Image Process, Vol. 18, No. 2, 2011, pp. 165-183. http://dx.doi.org/10.1615/JFlowVisImageProc.2011003481
[14] S. Umeda, “Characteristics of Intersecting Flows in Multiple Diamond-Shaped Islands,” Journal of Flow Visualization and Image Process, Vol. 8, No. 2, 2001, pp. 165- 176.
[15] S. Umeda and W.-J. Yang, “Flow Characteristics inside Diamond-Shaped Cylinder Bundles,” Proceedings of International Conference on Jets, Wakes and Separated Flows, ICJWSF-2005, 2005, pp. 539-542.
[16] S. Umeda and S. Torii, “Flip-Flop Flow Characteristics inside Streamwise Diverging Diamond-Shaped Cylinder Bundles,” Journal of Materials Science and Engineering A, Vol. 2, No. 9, 2012, pp. 616-623.
[17] Y. Ohya and T. Karasudani, “A Shrouded Wind Turbine Generating High Output Power with Wind-Lens Technology,” Energies, Vol. 3, No. 4, 2010, pp. 634-649. http://dx.doi.org/10.3390/en3040634
[18] T. Gono, T. Syuto, T. Yamagata and N. Fujisawa, “Time-Resolved Scanning Stereo PIV Measurement of Three-Dimensional Velocity Field of Highly Buoyant Jet,” Journal of Visualization, Vol. 15, No. 3, 2012, pp. 231-240. http://dx.doi.org/10.1007/s12650-012-0129-y

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.