前処理法に基づく超臨界流体の熱対流シミュレーション

抄録

When temperature and pressure of the liquid and gas are raised to the critical point, they start behaving as a supercritical fluid. The supercritical fluid has the characteristics of both the liquid and the gas. These characteristics have a wide range of application to engineering process namely, the energy devices, the semiconductor washing and so on. For device development, it is necessary to have a good understanding of this phenomenon. But it is difficult to simulate flow of supercritical fluid numerically by conventional methods, due to sudden change of the physical properties depending on pressure and temperature condition. In this paper, natural convections inside a cubical cavity and Rayleigh Benard convection calculated by using numerical simulation technique of the supercritical fluid developed by Yamamoto. The effect of the density difference induced by the phase change to the flow is investigated.