Gas-Particle Interaction Model Development in Plume Surface Interaction Erosion and Cratering

2022 ◽  
Author(s):  
Jeffrey West ◽  
Peter Liever
Keyword(s):  
Model Development ◽  
Particle Interaction ◽  
Interaction Model ◽  
Surface Interaction

scholarly journals Influence of the gas-surface interaction model on time-dependent rarefied gas simulations

Vacuum ◽  
2016 ◽  
Vol 128 ◽  
pp. 244-251 ◽  
Author(s):  
Nemanja Andric ◽  
M. Hossein Gorji ◽  
Patrick Jenny
Keyword(s):  
Rarefied Gas ◽  
Interaction Model ◽  
Surface Interaction ◽  
Time Dependent

Solving 2-D Slamming Problems by the Higher-Order MPS Method With an Improved Pressure Gradient Model

2019 ◽  
Author(s):  
Ruosi Zha ◽  
Heather Peng ◽  
Wei Qiu
Keyword(s):  
Pressure Gradient ◽  
Kernel Function ◽  
Particle Interaction ◽  
Interaction Model ◽  
Water Entry ◽  
Higher Order ◽  
Mps Method ◽  
First Order ◽  
Moving Particle ◽  
Good Agreement

Abstract A higher-order moving particle semi-implicit (MPS) method was developed to solve water entry problems. The Wendland kernel function was applied in the particle interaction model. Various models for pressure gradient were investigated. To overcome the inconsistency in the original MPS methods, a pressure gradient correction was implemented to guarantee the first-order consistency of gradient. The corrective matrix was modified by using the derivative of the kernel function. A particle shifting technique was also applied to improve the numerical stability. Validation studies were carried out for water entry of a rigid wedge with the tilting angles of 0°, 10° and 20°, and a rigid ship section. The solutions by the present method are generally in good agreement with experimental data and other published numerical results.

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