Generation, propagation, reflection, and interference of pressure waves in the water entry of wedge-shaped bodies are investigated in this study using a modified 2D acoustic equation. Impact pressure generated by symmetric and asymmetric entry of wedges is considered as excitation for the initiation of an acoustic wave. Available impact pressure is discretized and applied as multiple nodal source functions. The acoustic equation is numerically solved using finite difference method. Pattern of propagating pressure waves is comparedfor the symmetric and asymmetric entries with different deadrise angles. The comparison shows that asymmetric entry can significantly change the propagation pattern. The problem is also inspected for the shallow water entry by considering reflection from boundaries. The shallow water results reveal that special cares should be considered in specifying tank dimensions in experimental measurement of the impact pressure to avoid undesired pressure oscillation.

在这项研究中，使用改进的二维声学方程，研究了楔形体入水口中压力波的产生，传播，反射和干扰。由楔的对称和不对称进入产生的冲击压力被认为是激发声波的激励。可用的冲击压力被离散化，并作为多个节点源函数应用。使用有限差分法对声学方程进行数值求解。比较了具有不同死角的对称和不对称入口的传播压力波的模式。比较表明，不对称进入可以显着改变传播方式。通过考虑边界反射，还检查了浅水进入的问题。