참고문헌
- Tek. Tidskr v.28 B. Stalhane;S. Pyk
- Physica v.82C J.J. Healy;J.J. de Groot;J. Kestin
- J. Phys. E v.14 Y. Nagasaka;A. Nagashima
- Int. J. Thermophys v.3 A Alloush;W.B. Gosney;W.A. Wake-ham
- 機論(B編) v.46 no.401 濟藤;彬夫;
A transient short-hot-wire technique has been presented for simultaneous measurements of the thermal conductivity and diffusivity of fluids under the microgravity condition. Two-dimensional heat conduction equations for concentric cylinders with various radius ration and length-diameter ratio have been solved numerically by taking account of the heat capacity of the inner cylinder. A unique relation between the non-dimensional temperature of inner cylinder and Fourier number is obtained for a wide range of thermal properties of the fluids, because the relation if found to be almost independent of these properties. Then the characteristic could be utilized as a masterplot to evaluate both the thermal conductivity and diffusivity. In principle, this method is proved to have an error within 1% for both of these properties.