CFD를 활용한 이중 패널 벽체구조 무도류벽 원형 물탱크의 흐름특성 분석

The purpose of this study is to analyze fluid flow characteristics of a circular water tank with double panel wall. Tracer test and fluid analysis were performed on 0.2 ton circular water tank with double panel wall. The CFD model was developed that could simulate a tendency to mix and disperse of the circular water tank. Furthermore, parametric study was conducted to investigate the water flow performance according to design variables such as the number of internal pipes and the diameter ratio of interior and exterior walls. For the same flow rate, the increase in the number of pipes tends to cause the water flow performance degradation. Therefore, the lower limit for flow rate is required to make stable flow formation and the details of pipe should be designed considering flow rate and capacity of the water tank. The flow of the internal part is more influenced than the exterior part by the diameter ratio. It was investigated that the limitation on the diameter ratio considering capacity of the water tank was required because the velocity of the internal part tends to decrease as the increase of the diameter ratio.