Prof. Ozer Igra 
Department of Mechanical Engineering 
Ben Gurion University of the Negev

Shock waves interaction with various boundaries. Shock waves in multiphase media. High temperature Gasdynamics. Nonstationary compressible flows.

1. Shock wave reflection from a non-rigid boundary, funding: German-Israel Foundation for Scientific Research (with Prof. Ben-Dor). Completed 1991.
2. Attenuation of shock waves in dusty gases, funding: US Army (with Prof. Ben-Dor). Completed 1993.
3. Attenuation of planar shock waves in dusty gases, funding: German-Israel Foundation for Scientific Research (with Prof. Ben-Dor). Completed 1996.
4. Shock waves in gas-liquid foams, funding: Israel Ministry of Science and Technology (with Prof. Elperin). Completed 1997.
5. Shock wave interaction with granulor media, internal funding.
6. Shock and Blast Waves Loading on Various Boundaries and Environments, Funding: German-Israeli Foundation for Scientific Research & Development (with Profs. Falcovitz, Grönig and Dr. Heilig) Completed 2001.
7. Photoelastic investigation of weak shock waves propagation through granular media, funding: The Israel Science Foundation (with Prof. Ben Dor and Dr. Britan).

Abstracts of Current :

1. Shock Wave Interaction with Various Boundaries: Experimental and numerical studies were conducted for the interaction of shock and/or rarefaction waves with different rigid boundaries. The numerical solution was conducted using the GRP scheme. Excellent agreement was found between experimental (shadowgraphs and pressure readings) and numerical results. For details see the list of selected publications on the following page.
2. Shock Waves in Dusty Gases: Shock wave propagation in gas - dust suspensions were studied numerically. The studies covered unsteady one dimensional and two - dimensional flow fields. Comparisons with similar pure gas cases were made in order to illustrate the effect of the dust presence on the obtained flow field. It was shown that the dust presence played an important role in the obtained suspension flow field. The specific effects on the obtained flow field associated with changes in the dust properties (such as, dust loading, size, material density and specific heat capacity) were studied. For details see the list of selected publications on the following page.
3. Head-on Collision of Planar Shock Waves with granular/ porous layers : The wave system developed from such interactions was studied experimently and theoretically/numerically. Specifically, effects associated with changes in the depth and structure of the granular layers on the obtained flow and wave pattern was studied. For details see the list of selected publications on the following page.

 Ph. D Students

 Post Graduate