Experimental Investigation of Artificial Supercavitation under Periodic Gust Flows

Jeong, So-Won; Park, Sang-Tae; Ahn, Byoung-Kwon

doi:2018.21.2.188

J. KIMS Technol > Volume 21(2); 2018 > Article

Research Paper

Journal of the Korea Institute of Military Science and Technology 2018;21(2):188-194.
DOI: https://doi.org/10.9766/KIMST.2018.21.2.188

Experimental Investigation of Artificial Supercavitation under Periodic Gust Flows

So-Won Jeong, Sang-Tae Park, Byoung-Kwon Ahn

Department of Naval Architecture & Ocean Engineering, Chungnam National University

주기적으로 거동하는 유동장의 인공 초월공동에 대한 실험연구

정소원, 박상태, 안병권

충남대학교 선박해양공학과

Abstract

Recently a supercavitating underwater vehicle moving at high speed over 200 knots has been of interest for its practical advantage of the dramatic drag reduction. Many experimental and numerical studies have been explored, however most of the studies deal with the case of uniform flows. In this paper, we investigated physical behaviors of the artificial supercavity in a periodic gust flow. Experiments were carried out at a cavitation tunnel of the Chungnam National University(CNUCT), which is equipped to remove the gas supplied from outside of the tunnel. We devised an experimental apparatus generating vertical and horizontal gust flows, and investigated the supercavity formations at different periodic mode of the incoming flow.

Key Words: Supercavitation, Artificial Supercavitation, Torpedo, Cavitation Tunnel