Interactions between BlastWaves and V-Shaped and Cone-Shaped Structures

摘要：

A 2-D numerical model of interactions between a blast wave and a V-shaped or a cone-shaped structure is developed. The model simulates the blast wave reflection from a V-shaped or a cone-shaped structure, the movement of the structure due to the blast impact and the induced shock wave behind the structure. Elliptic grid generation and coordinate transformation are utilized to solve the flow fields in the irregular physical domain. Different types of blast wave reflections, such as normal reflection, oblique reflection and Mach stem reflection, are captured by the numerical model. It is found that the reflected pressure and impulse transmitted to the structure decrease with the increase of incident angle. On the other hand, with the increase of incident angle, the effects of fluid structure interactions (FSI) in reducing the blast loads decreases. The FSI coupled with oblique or Mach stem reflection improves the blast wave mitigation.

关键词： oblique reflection Mach stem reflection incident angle fluid-structure interaction blast wave mitigation

作者: W. Peng Z. Y. Zhang G. Gogos G. Gazonas

作者单位: Ocean Energy Laboratory, GuangZhou Institute of Energy Conversion, Guangzhou 510640, China Department of Mechanical Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA U.S. Army Research Laboratory, Aberdeen Proving Ground, MD 21005, USA

会议类型: 国际会议

会议名称: 第六届流体力学国际会议

会议地点: 广州

会议语种:英文

页码: 149-153

在线出版日期: 2011-06-30（万方平台首次上网日期，不代表论文的发表时间）