Measurement of Turbulent Wake behind a Self-Propelled SUBOFF Model and Derivation of Experimental Equations

Shin, Myung-Soo; Moon, Il-Sung; Nah, Young-In; Park, Jong-Chun

doi:2011.14.3.364

J. KIMS Technol > Volume 14(3); 2011 > Article

Journal of the Korea Institute of Military Science and Technology 2011;14(3):364-371.
DOI: https://doi.org/10.9766/KIMST.2011.14.3.364

Measurement of Turbulent Wake behind a Self-Propelled SUBOFF Model and Derivation of Experimental Equations

Myung-Soo Shin, Il-Sung Moon, Young-In Nah, Jong-Chun Park

¹KORDI
²
³Pusan National University

자항하는 SUBOFF 모형 난류항적 계측 및 실험식 유도

신명수, 문일성, 나영인, 박종천

¹한국해양연구원
²국방과학연구소
³부산대학교

Abstract

This paper presents experimental results and derived experimental equations to investigate the turbulent wake characteristics generated by the self-propelled SUBOFF submarine model. A self-propelled SUBOFF model which was assumed as an axial-symmetric body was used to create wake, and a thin strut was mounted on the topside of the model. The experiments were conducted in a circulating water channel(CWC), and the hot-film was used to measure the turbulence in wake cross-section at the distance range of 0.0~2.0L from the model. The hot film anemometer measured turbulent velocity fluctuations, and the time-averaged mean velocity and turbulent intensity are obtained from the acquired time-series data. Measured results show well the general characteristics of turbulent intensity, kinetic energy and mean velocity distribution. Also, this paper presents derived experimental equations, which is extended result to the reference [1]. These experimental equations show well the general characteristics of the turbulent wake behind the self-propelled submerged body.

Key Words: Turbulent Wake, Turbulent Intensity, Turbulent Kinetic Energy, Self-propelled SUBOFF Model, CWC Experiments(Circulating Water Channel), Experimental Equation