Publisher : The Society of Naval Architects of Korea
DOI : 10.3744/SNAK.2016.53.3.180
Title & Authors
An Experimental Study on Wake Cavity Flow Characteristics of Two-dimensional Wedge Shaped Control Fins Jeong, So-Won; Ahn, Byoung-Kwon;
As distinct from a slender body, the separation of the boundary layer on a bluff body give rise to complex wakes in which various kinds of vortices form, develop and interact with each other. In this paper, we investigate cavitation wake field behind wedge shaped two-dimensional fin models. Eight different models are tested at the Chungnam National University Cavitation Tunnel (CNU-CT). First, we measure wake cavity shapes and compare with numerical results, which shows the good agreement with each other. In addition, we demonstrate that wake flow characteristics of the control fin are clearly identified by the correlation analysis of high-speed camera images and pressure fluctuation measurements.
Ahn, B. K. Lee, C. S. & Kim, H. T., 2010. Experimental and Numerical Studies on Super-Cavitating Flow of Axisymmetric Cavitators. International Journal of Naval Architecture and Ocean Engineering, 2(1), pp.39-44.
Ahn, B. K. Lee, T. K. Kim, H. T. & Lee, C. S., 2012. Experimental Investigation of Supercavitating Flows. International Journal of Naval Architecture and Ocean Engineering, 4(2), pp.123-131.
Kim, J. H. Jang, H. K. Ahn, B. K. & Lee, C. S., 2013. A Numerical Analysis of the Supercavitating flow around Three-Dimensional Axisymmetric Cavitators. Journal of the Society of Naval Architects of Korea, 50(3), pp.160-166.
Plesset, M. S. & Shaffer, P. A., 1948. Cavity Drag in Two and Three Dimensions. Journal of Applied Physics, 19(10), pp.934-939.
Waid, R.L., 1957. Water Tunnel Investigation of Two-dimensional Cavities. The Hydrodynamics Laboratory of California Institute of Technology. Report. E-73.6