Objective The project is devoted to a comprehensive experimental and numerical investigation of complex hydrodynamic flows in gases and liquids obtained by means of laser-driven shock tube (LST)- a new technique where strong shock waves in gases and compression waves in liquids are initiated by deposition of high-power laser beam energy in plasma-confined geometry. The experience of French group, who pioneered in investigation of confined plasma physics and its technological applications, will be extended to another experimental field. The main experiments will be performed with 100-J energy, 100-ns pulse duration KrF laser installation GARPUN at Lebedev Physical Institute.UV radiation (wavelength 0.248 mm) will be very uniformly focused by multi-prism raster optical system inside miniature tube (typical sizes of about centimetre) filled with liquid or gaseous media. At laser intensities of 0.1-1 GW/cm2 absorption of laser beam behind the transparent widow in the adjacent thin layer of opaque liquid or some coating material would generate planar compression waves in liquids with amplitudes up to 10kbar or strong planar shock waves in gases with Mach number as high as 20. These waves will be used to accelerate contact interfaces with the other liquids or gases (typical accelerations are expected to be 106 times as high as the gravitation one) and to investigate the development of hydrodynamic instabilities, formation of vorticity and vortex evolution into chaotic turbulent mixing at the interface. Larangian and Euler numerical codes in two (2D) and three spatial dimensions (3D), which take into account various equations of state for compressed matter, will be used to run numerical simulations for these experiments.The results obtained by several Russian groups with LST technique and by numerical simulations will be then compared with similar hydrodynamic phenomena investigated in the ICF experiments. They are carrying out at significantly higher laser intensities and in quite different temporal and spatial scales at the main European high-performance laser facilities (LULI, PALS and RAL). The last experiments will be performed and simulated by Italian and Spanish groups. Such comparison will allow us to establish the main hydrodynamic rules controlling initial perturbations growth at linear and nonlinear evolution stages, as well as a vortex flow formation. These results being a fundamental problem in fluid mechanics are important not only in the ICF, but in many other fields, e.g. they can enlighten some astrophysical phenomena.Another problems under investigation will be hypersonic gas flow around the bodies of complicated configuration, strong shock wave refraction near inclined or intricate interfaces and the following evolution into a vortex flow. The LST technique and numerical simulations will be used to study these problems, which are important for aerospace engineering and the Earth protection against collisions with space objects.Research teams involved in this Project are well experienced in either experimental or computational physics of laser interaction with matter. They will combine opportunities given by Russian high-power KrF laser installation and high-performance European laser facilities, traditional and novel arrangements of experiments, newly developed 2D and 3D numerical codes. The experience of Russian groups is complimentary to that of the INTAS groups, in such a manner that to joint their expertise will be very important for the success of the project. Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Topic(s) 1B - Condensed Matter, Optics and Plasma Physics OPEN - OPEN Call Call for proposal Data not available Funding Scheme Data not available Coordinator Universiti degli Studi di Milano Bicocca EU contribution No data Address Piazza della Scienza 3 20126 Milano Italy See on map Total cost No data Participants (5) Sort alphabetically Sort by EU Contribution Expand all Collapse all Coopération Laser Franco-Allemande France EU contribution No data Address 16 Prieur de la Côte d'Or 94114 Arcueil See on map Total cost No data Russian Academy of Sciences Russia EU contribution No data Address Leninsky Prospect 53 117924 Moscow See on map Total cost No data Russian Academy of Sciences Russia EU contribution No data Address Miusskaja square 4a 125047 Moscow See on map Total cost No data Technical University Russia EU contribution No data Address Prospect Vernardskogo 78 117454 Moscow See on map Total cost No data Universidad Politecnica de Catalunya Spain EU contribution No data Address Modul B4-B5 08034 Barcelona See on map Total cost No data
