NUMERICAL SIMULATION OF A TRANSONIC AIRFOIL IN THE CLOUD WITH THE DROPLET-LADEN INVISCID AIR FLOW MODEL

액적이 있는 비점성 공기유동 모델을 이용한 구름속의 천음속 에어포일 수치해석

In this paper, the problem of transonic aerodynamic characteristics of a NACA0012 airfoil is numerically investigated in the inviscid gas-droplet two-phase flow with the compressible two-fluid model. In the present study, the airfoil flight in the cloud is simulated by taking account of the viscous drag of the droplets, the heat transfer, the phase change, and the droplet fragmentation The two-fluid equation system is solved by the fractional-step method and the WAF-HIL scheme. The effects of size and volume fraction of the droplets on the flow characteristics of the airfoil in the cloud are elaborated and discussed.