التفاصيل البيبلوغرافية
| العنوان: |
High velocity impact of a spherical particle on a surface: Theory and simulation of the jet formation. |
| المؤلفون: |
Soulard, L., Durand, O., Prat, R., Carrard, Th. |
| المصدر: |
Journal of Applied Physics; 5/28/2021, Vol. 129 Issue 20, p1-15, 15p |
| مصطلحات موضوعية: |
MOLECULAR dynamics, JETS (Nuclear physics), VELOCITY, EQUATIONS of state, JET impingement |
| مستخلص: |
The high velocity impact of a drop on a surface causes the formation and, afterward, the breakup of a jet. The understanding of the jet breakup requires at first a detailed description of the processes preceding its formation and the determination of its initial characteristics. In this paper, we first describe the initial impact processes, revisiting the corresponding 2D shock theory; the resulting model is general and independent of the choice of the equation of state. In particular, we define in a simple way the criteria for the existence of a shock or a jet solution. The theoretical predictions are then compared with a numerical simulation using liquid tin as the material for the drop and a rigid material for the target. The theoretical shock solution fits very well the results obtained with an Eulerian hydrocode. Molecular dynamics simulations were used to simulate the growth and breakup of the jet. The theoretical jet orientation and velocity are consistent with the simulation. Finally, the rather complex velocity profile of the jet is associated with the specific phenomena related to the history of the drop. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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