Numerical Analysis of the Hydrodynamic Ram Phenomenon in Aircraft Fuel Tanks
Numerical Analysis of the Hydrodynamic Ram Phenomenon in Aircraft Fuel Tanks
复制标题
DOI：
10.2514/1.j051613
复制
发表时间：
2012-08
期刊：
影响因子：
2.5
通讯作者：
D. Varas;J. López-Puente;R. Zaera
中科院分区：
文献类型：
--
作者：
D. Varas;J. López-Puente;R. Zaera
流体动力学冲压（Hydrodynamic Ram，HRAM）是一种高能物体穿透充满流体的容器时发生的现象。射弹通过流体将其动量和动能传递到周围结构，增加了灾难性故障的风险和对相邻部件的过度结构损坏。它在飞机机翼油箱的设计中特别受到关注，因为它已被确定为飞机易损性的重要因素之一。为了研究上述现象，充水铝管（不同体积百分比）受到球形弹丸的冲击。这项工作的重点是通过以前开发和验证的数值模型，以实现更好地理解的流体/结构相互作用的问题，发生在HRAM现象的能量，动量和压力等值线的分析。
Hydrodynamic Ram (HRAM) is a phenomenon that occurs when a high-energetic object penetrates a fluid-filled container. The projectile transfers its momentum and kinetic energy through the fluid to the surrounding structure increasing the risk of catastrophic failure and an excessive structural damage on adjacent components. It is of particular concern in the design of wing fuel tanks for aircraft because it has been identified as one of the important factors in aircraft vulnerability. In order to study the aforementioned phenomenon, water filled aluminium tubes (to different volume percentages) were subjected to impact of spherical projectiles. This work is focused on the analysis of energies, momenta and pressure contours obtained by means of a previously developed and validated numerical model in order to achieve a better understanding of the fluid/structure interaction problem that takes place during the HRAM phenomenon.