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

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

doi:2011.14.2.198

J. KIMS Technol > Volume 14(2); 2011 > Article

Journal of the Korea Institute of Military Science and Technology 2011;14(2):198-204.
DOI: https://doi.org/10.9766/KIMST.2011.14.2.198

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

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

¹KORDI
²
³Pusan National University

SUBOFF 모형 후방 난류항적 계측 및 실험식 유도

신명수, 문일성, 나영인, 박종천

¹한국해양연구원
²국방과학연구소
³부산대학교

Abstract

This paper presents the experimental result to investigate the characteristics of turbulent wake generated by submarine. A SUBOFF nude model which was assumed as an axial -symmetric body was used to create wake, and a thin strut was mounted on the top of the model. The experiments were conducted in a circulating water channel(CWC), and a 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 timeaveraged 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, experimental equations are derived. These experimental equations show well the general characteristics of the turbulent wake behind the submerged body with simple configuration.

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