유조선 화물취급구역내 동력환기특성에 관한 연구

A Study on Mechanical Ventilation Characteristics in Cargo Handling Area of Tanker

  • 조대환 (목포 해양대학교 기관공학부)
  • 발행 : 2001.01.01

초록

In regulation of IGC code 12.1 mechanical ventilation should be arranged to ensure sufficient air movement through the space to avoid the accumulation of flammable or toxic vapours and ensure a safe working environment, but in no case should the ventilation system have a capacity of less than 30 changes of air per hour baed upon the total volume of the space. In this study, a scaled mode chamber was constructed to investigate the ventilation characteristics and stagnation area in the hood room of LNG carrier and pump room in tanker. An experimental study was performed on the model by using visualization equipment with a laser apparatus and an image intensifier CCD camera. Twelve different kinds of measuring areas were selected as the experimental condition. Instant simultaneous velocity vectors in the whole fields were measured by a 2-D PIV system A three-dimensional numerical simulation was also carried out for three different Reynolds numbers. Then the CFD predictions were discussed with the experimental results. The results show the spiral L-shape flow that moves from the opening on the left wall diagonally to the upper right part dominates the ventilation structure. The stationary area of hood room in the velcoity distributions was located in the upper left stern part.

키워드

참고문헌

  1. International code for the construction and equipment of ships carrying liquid gases in bulk
  2. Proc. of the Third JSME-KSME Fluids Engineering Conference PIV Measurement of Cubic Cavity Driven 2-D Plane Poiseuille Flow Lee Y.H., Kim C.S., Cho, D.H., Choi, J.W
  3. TSME international journal, Series 2 v.2 Movement of Small practices caused by an Air Flow in a Chmber Suzuki, H. Hasegawa, E;Matsufuji, H
  4. Appl. Math. modeling v.4 Numerical prediction of 3-D flow in a ventilated room using turbulence Models Sakamoto, Y;Matsuo. Y
  5. computer Methods in Applied Mechanics and Engineering The numerical computation of Turbulent Flows Launder, B. E;Spalding, D. B
  6. ASHRAE Trans v.33 Three-Dimensional Numerical Simulation of Turbulence Air-flow in a ventilated Room by means of a Two-Equation Model Murakami. S;Kato.S, Sayama, S
  7. ASHRAE Trans. No.3027 Application Numerical Simulation for Residential Room Air Conditioning Yamazaki, K. Komatsu, M, Otsubo. M
  8. 대한기계학회 춘계학술대회, 논문집(II) PIV에서의 계조치 상호 상관법 개발 최장운;이영호
  9. 대한기계학회 추계학술대회 논문집(II) PIV에서의 보간방법의 적용 최장운;이영호