Title :
A Numerical Analysis Method for the Problem of a Wedge Water Impact
Author :
Yonghu, Wang ; Zhaoyu, Wei
Author_Institution :
Civil Aviation Flight Univ. of China, Guanghan, China
Abstract :
An alternative numerical method for the solution of 2D wedge water-entry problems is presented. An improved Complex Variable Boundary Element Method (CVBEM) is stressfully applied to study the strongly nonlinear fluid-structure interaction in a wedge water-entry problem. The free flow surface, splash deformation approximation and pressure distribution on the wetted surface are numerically simulated in a framework of the complex velocity potential theory and the time domain. The special splash treatment technique is introduced to the improved CVBEM. And the same time, the free surface is numerically divided into two regions and re-meshed approximately to simulate splash deformation. Finally, the simulation results show that the proposed method appropriately simulates the water impact problem and the same time it agrees very well with splash deformation observed in a real instance.
Keywords :
approximation theory; boundary-elements methods; deformation; hydrodynamics; impact (mechanical); shapes (structures); time-domain analysis; water; 2D wedge water-entry problem; complex variable boundary element method; complex velocity potential theory; free flow surface; nonlinear fluid-structure interaction; numerical analysis method; numerical simulation; pressure distribution; splash deformation approximation; splash deformation simulation; splash treatment technique; time domain; wedge water impact; Approximation methods; Boundary conditions; Educational institutions; Fluids; Hydrodynamics; Surface treatment; Fluid-structure interaction; Improved CVBEM; Splash deformation approximation; Water impact;
Conference_Titel :
Computer and Information Technology (CIT), 2012 IEEE 12th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-4873-7
DOI :
10.1109/CIT.2012.175
