Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 16 Issue 8
- /
- Pages.162-169
- /
- 1999
- /
- 1225-9071(pISSN)
- /
- 2287-8769(eISSN)
A Study on the temperature Distributions at the Vicinity of a Very Fast Moving Heat Source
매우 빠르게 움직이는 열원 주위의 온도분포에 관한 연구
- Published : 1999.01.01
Abstract
Fourier heat conduction law becomes invalid for the situations involving extremely short time heating, very low temperatures and fast moving heat source(or crack), since the wave nature of heat propagation becomes dominant. For these conditions, the modified heat conduction equation with the finite propagation speed of heat in the medium could be applied to predict heat flux and temperature distributions. In this study, temperature distributions at the vicinity of a very fast moving heat source are investigated numerically. Thermal fields are characterized by thermal Mach numbers(M) defined as the ratio of moving heat source speed to heat propagation speed in the solid. In the transonic and supersonic ranges(
Keywords
- Wave nature;
- modified Fourier's heat conduction law;
- thermal Mach numbers;
- propagation speed of thermal wave
- 파동특성;
- 수정된 열전도방정식;
- 열 마하수;
- 열전파속도;