A two-dimensional elastic plastic hydrodynamics Eulerian code MEPH is applied to simulate micro-jet formation and penetration process of void in sample during shock loading.We focused on forming process of micro-jet.Maximal penetration depth versus key factors such as shock pressure and void diameter is analysed.Theoretical jet penetration is compared with numerical simulations of maximal penertration depth.

A two-dimensional elastic and plastic hydrodynamics code MEPH is applied to simulate ejecting process. We focus on the effect of shock pressure and shock risetime on mass ejection from shocked aluminum. It shows that with increase of shock pressure the ejecting factor keeps increasing, but the ejecting factor is not sensitive to the shock pressure. The effect of shock risetime on the mass ejection from shocked aluminum is also investigated. Numerical results agree well with experiments. The mass ejection is sensitive to shock risetime.

A Eulerian code MEPH2Y is combined with a Lagrangian code LTZ-2D to analyze perforation of jet and projectile on a concrete plate. The hybrid code advantages in calculation the formation of jet and projectile. High resolution on penetration and damage of concrete target are obtained. Jet penetration and damage of the concrete target are simulated and compared with experimental results. Jet penetration and damage of concrete target simulated agree well with test data.

A two-dimensional elastic and plastic hydrodynamics Eulerian code MEPH is applied to simulate aluminium ejecting with single defect.We focus on change of maximum ejecting velocity and ejecting factor with different angle and shape.Numerical results are consistent with experiments.

We study asymmetric jet and slug formation in collision of two plane flows at a finite distance from stagnation point. Analytic expressions for width and flow direction of jet and slug are given on a solution ellipse. The jetting process is simulated with Euler hydrocode of high order precision and YOUNGS algorithm for tracking interfaces. Predictions are more accurate than results of other analytic models and are in agreement with KS experimental data. With increase of asymmetry between incoming flows, flow direction of slug changes considerably, whereas the direction of jet barely deviates from the direction of symmetric bisector of incoming flows.