Fluid Flow and Heat Transfer in a Super high-Pressure Mercury Lamp using CFD

  • Jang, Dong Sig (RICOH) ;
  • Lee, Yeon Won (Department of Mechanical & Automotive Engineering, Pukyong National University) ;
  • Li, Kui Ming (Graduate School of Mechatronics Engineering, Pukyong National University) ;
  • Parthasarathy, Nanjundan (Graduate School of Mechatronics Engineering, Pukyong National University) ;
  • Choi, Yoon Hwan (BK21, School of Mechanical Engineering, Pukyong National University)
  • 투고 : 2012.06.02
  • 심사 : 2012.11.10
  • 발행 : 2012.12.31

초록

The discharge properties of super high-pressure mercury lamp are due to resistance heating for energy input, and results in temperature increase. The cooling equilibrium state is reached by the heat conduction, convection and radiation. In order to predict the fluid flow and heat transfer in and around the mercury lamp accurately, its visualization is of utmost importance. Such visualization is carried out by CFD program in this study. We focus on Anode shape to calculate four cases, namely AA, AB, AC and AD separately, and compare the temperature distribution and velocity vector in each case to predict cooling capacity and fluid flow properties. It can be concluded that the shape of anode plays an important role that affects the fluid flow and heat transfer in a mercury lamp.

키워드

참고문헌

  1. Tetsu Takemura, Tatsumi Hiramoto, Masaki Yoshioka, and Tatsushi Igarashi, "Three-Dimensional Modeling of a Direct Current Operated Hg-Ar Lamp", IEEE TRANSACTIONS ON PLASMA SCIENCE., Vol. 34. No. 2, (2006).
  2. Z.Araoud, R.Ben Ahmed, M. Bouaoun, M. Ben EI Hadj Rhouma and K. Charrada, "A dynamic study of the warm-up phase of a high-pressure mercury lamp", PHYSICS OF PLASMAS 15, (2008).
  3. K. Charrada, G Zissis and M Stambouli, "A study of the convective flow as a function of external parameters in high-pressure mercury lamps", Journal of Physics D: Applied Phhysics, Vol. 29, No. 3, pp.753-760, (1996). https://doi.org/10.1088/0022-3727/29/3/036