caa a22 4500 606198709 CHVBK 20210128100935.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00348-015-1970-2 doi (NATIONALLICENCE)springer-10.1007/s00348-015-1970-2 Quantification of the effect of surface heating on shock wave modification by a plasma actuator in a low-density supersonic flow over a flat plate [Elektronische Daten] [Romain Joussot, Viviana Lago, Jean-Denis Parisse] This paper describes experimental and numerical investigations focused on the shock wave modification induced by a dc glow discharge. The model is a flat plate in a Mach 2 air flow, equipped with a plasma actuator composed of two electrodes. A weakly ionized plasma was created above the plate by generating a glow discharge with a negative dc potential applied to the upstream electrode. The natural flow exhibited a shock wave with a hyperbolic shape. Pitot measurements and ICCD images of the modified flow revealed that when the discharge was ignited, the shock wave angle increased with the discharge current. The spatial distribution of the surface temperature was measured with an IR camera. The surface temperature increased with the current and decreased along the model. The temperature distribution was reproduced experimentally by placing a heating element instead of the active electrode, and numerically by modifying the boundary condition at the model surface. For the same surface temperature, experimental investigations showed that the shock wave angle was lowerwith the heating element than for the case with the discharge switched on. The results show that surface heating is responsible for roughly 50% of the shock wave angle increase, meaning that purely plasma effects must also be considered to fully explain the flow modifications observed. Springer-Verlag Berlin Heidelberg, 2015 Joussot Romain ICARE, CNRS, UPR 3021, 1C Avenue de la Recherche Scientifique, 45071, Orléans cedex 2, France aut Lago Viviana ICARE, CNRS, UPR 3021, 1C Avenue de la Recherche Scientifique, 45071, Orléans cedex 2, France aut Parisse Jean-Denis IUSTI, Aix-Marseille Université/CNRS, UMR 7343, 5 rue Enrico Fermi, Technopôle Château-Gombert, 13453, Marseille cedex 13, France aut Experiments in Fluids Springer Berlin Heidelberg 56/5(2015-05-01), 1-18 0723-4864 56:5<1 2015 56 348 https://doi.org/10.1007/s00348-015-1970-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-1970-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Joussot Romain ICARE, CNRS, UPR 3021, 1C Avenue de la Recherche Scientifique, 45071, Orléans cedex 2, France aut NATIONALLICENCE 700 1- Lago Viviana ICARE, CNRS, UPR 3021, 1C Avenue de la Recherche Scientifique, 45071, Orléans cedex 2, France aut NATIONALLICENCE 700 1- Parisse Jean-Denis IUSTI, Aix-Marseille Université/CNRS, UMR 7343, 5 rue Enrico Fermi, Technopôle Château-Gombert, 13453, Marseille cedex 13, France aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/5(2015-05-01), 1-18 0723-4864 56:5<1 2015 56 348