| A Computational Study About Behavior of an Underwater Projectile and Prediction of Surficial Pressure Loading |
|
Sung Min Jo, Oh Joon Kwon |
|
Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology |
| 수중 운동체의 거동 및 표면 압력하중 예측에 관한 수치적 연구 |
|
조성민, 권오준 |
|
한국과학기술원 항공우주공학과 |
|
|
| Abstract |
|
In the present study, two phase flows around a projectile vertically launched from an underwater platform have been numerically investigated by using a three dimensional multi-phase RANS flow solver based on pseudo-compressibility and a homogeneous mixture model on unstructured meshes. The relative motion between the platform and projectile was described by six degrees of freedom(6DOF) equations of motion with Euler angles and a chimera technique. The propulsive power of the projectile was modeled as the fluid force acting on the lower surface of the body by the compressed air emitted from the platform. Qualitative analysis was conducted for the time history of vapor volume fraction distributions. Uncorking pressure around the projectile and platform was analyzed to predict impact force acting on the surfaces. The results of 6DOF analysis presented similar tendency with the surficial pressure distributions. |
| Key Words:
Computational Fluid Dynamics, Unstructured Overset Mesh Technique, Uncorking Pressure, 6Degrees of Freedom |
PDF Links
Full text via DOI
Download Citation
