Effect of Circumferential Wall Heat Conduction on Boundary Conditions for Convection Heat Transfer from a Circular Tube in Cross Flow

원관 주위의 대류 열전달에서 경계조건에 대한 원주방향 열전도의 영향

  • 이상봉 (부경대학교 대학원 제어기계공학과) ;
  • 이억수 (동의공업대학 기계설계과) ;
  • 김시영 (부경대학교 기계공학부)
  • Published : 2001.05.01

Abstract

With uniform heat generation from the inner surface of the cylindrical heater placed in a cross flow boundary condition, heat flow that is conducted along the wall of the heater creates a non-isothermal surface temperature and non-uniform heat flux distribution. In the present investigation, the effects of circumferential wall heat conduction on convection heat transfer is investigated for the case of forced convection around horizontal circular tube in cross flow of air. The wall conduction number which can be deduced from the governing energy equation should be used to express the effect of circumferential wall heat conduction. It is demonstrated that the circumferential wall heat conduction influences local Nusselt numbers of one-dimensional and two-dimensional solutions.

Keywords

References

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