The Effects of the STS 304 Hollow Cylinder Property Variations on the Non-Steady Heat Conduction

STS 304 중공 원통의 물성치 변화가 비정상 열전도에 미치는 영향

  • 이상철 (경상대학교(원) 정밀기계공학과) ;
  • 최현근 (경상대학교(원) 정밀기계공학과) ;
  • 서종수 (경상대학교(원) 정밀기계공학과) ;
  • 정효민 (경상대학교 기계항공공학부.해양산업연구소) ;
  • 정한식 (경상대학교 기계항공공학부.해양산업연구소)
  • Published : 2004.05.31


The effects of the STS 304 hollow cylinder property variations on the non-steady heat conduction are considered in this paper. In the non steady state, the specific heat and conductivity are depended on the temperature variations, and these properties affect to the governing equation on heat conduction. But the most of numerical analysis on heat conduction is assumed to constant properties which is conductivity and specific heat. Assuming that the properties are reacted sensitively, the numerical results can have the difference of between constant properties with non constant properties. The main parameters are specific heat and conductivity. The temperature distributions of the STS 304 hollow cylinder became in steady state after 4 minutes in case of the constant properties. As the conductivity is varied with temperature, the temperature distributions became in steady state after 15 minutes. Therefore, a numerical analysis of the non steady state heat transfer is so important in case of varying temperature.