Experimental Investigations on the MHD Interaction Around a Blunt Body in a Hypersonic Unseeded Air Flows

Cristofolini, Andrea; Borghi, C.A.; Neretti, Gabriele; Schettino, Antonio; Trifoni, Eduardo; Battista, Francesco; Passaro, A.; Baccarella, Damiano

doi:10.2514/6.2012-2730

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…As to the aspect of experimental works, theoretical experiment of MHD flow control system is conducted in the plasma wind tunnel by Cristofolini. 12 The feasibility of MHD shock control around a blunt body in a hypersonic unseeded air flow has been experimentally validated by Deng et al 13 Experimental results have shown the ability of controlling the shock-wave configuration at hypersonic plasma flow field by application of an magnetic field. On the other hand, the potentialities of MHD effects for flow control in a hypersonic inlet are actively being investigated by many research groups throughout the world.…”

Section: Introductionmentioning

confidence: 99%

Mechanism analysis of magnetohydrodynamic shock control in hypersonic flow

Luo

Liu

Jiang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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The effects of external magnetic fields on the shock-wave configuration at hypersonic plasma flow field are investigated in this paper. A series of numerical simulations over various geometry configurations, namely, a blunt body and a fixed-geometry inlet forebody, have been conducted by varying the applied magnetic field under different freestream conditions. Results show that magnetohydrodynamic shock control capabilities under three types of magnetic field are ranked from weak to strong as dipole magnet, solenoid magnet, and uniform magnet field. Under the same applied magnetic field, it is easier to deflect the shock at a relatively high altitude condition, compared with the low altitude case. The bow shock standoff distance is dependent on the distribution of counter-flow Lorentz force right after shock in the stagnation region. For the oblique shock control, the function of two components of Lorentz force is different that the counter-flow one decelerates the flow and increases the shock-wave angle, while the normal one squeezes the oblique shock and deflects the streamlines.

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Section: Introductionmentioning

confidence: 99%

Mechanism analysis of magnetohydrodynamic shock control in hypersonic flow

Luo

Liu

Jiang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…The work described has been carried out funded by the European Space Agency in the framework of the MHD-AFC research project and by the Italian Space Agency (ASI) in the framework of the CAST project. The final goal of the conjunct projects was the realization of an experiment on the MHD interaction in an unseeded hypersonic air flow 6 . This paper mainly deals with the non-intrusive characterization of the plasma and the numerical calculations performed for interpreting the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Non-Intrusive Characterization and Numerical Investigation on a Mach 10 Ionized Air Flow

Cristofolini

Neretti

Borghi

et al. 2012

43rd AIAA Plasmadynamics and Lasers Conference

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This paper deals with the measurements performed to characterize the jet produced by the plasma wind tunnel SCIROCCO. The measurements are aimed to determine the vibrational temperature and the electron density of the plasma flow. A numerical rebuilding of the expansion trough the nozzle has then been performed. The work is part of an experimental activity funded by the European Space Agency and by the Italian Space Agency in the framework of a conjunct research project on the MHD interaction in an unseeded hypersonic air flow.

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“…The reason is ascribed to a very low ionization degree; electrical conductivity is too small to couple magnetic field with plasma flow. Only for high-hypersonic M∞>16 conditions (corresponding to a specific enthalpy H of 16.4 MJ/kg), the ionization rate starts to became relevant and the conductivity acquires values enabling a coupling between plasma flow and magnetic field [97][98][99]. In Fig.…”

Section: Mhd Effect On a Chemical Reacting Gasmentioning

confidence: 99%

Radiative Aerothermodynamics of Entering Space Vehicles: Toward the Use of State-to-State Approach

Суржиков¹,

Reynier²,

Seller³

et al. 2014

TOPPJ

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Modern problems of radiative aerothermodynamics of entering space vehicles are demonstrated and analyzed in the paper. New radiative gas dynamic problems concerned to coupling processes of non-equilibrium dissociation with radiation heat transfer in shock layers generated above large scale re-entry space vehicles returning from orbital and super orbital space mission are considered in the first part.Three-dimensional numerical simulation data on radiative aerothermodynamics of Martian entry probes Pathfinder, Exomars and Mars Science Laboratory (MSL) are presented and analyzed in the second part. It is shown that integral radiative heating of leeward surface of the entry probes exceeds corresponding convective heating.The third part is dedicated to consideration preliminary numerical simulation results on radiative gas dynamics of Galileo probes. At first, a review of the available results obtained during the mission preparation and post-flight analyses has been undertaken to select a computational matrix. This matrix has been selected by accounting for previous numerical efforts from the literature to crosscheck the results. Then, a model based on previous efforts has been set up for computing the flow-field around the probe at high altitude. Finally the test case matrix has been computed and crosschecked with existing numerical predictions performed.Some possibilities of innovative magneto-hydrodynamic (MHD) technologies being applied to solve problems of re-entry vehicles heat protection are discussed in the fourth part.All presented data demonstrate necessity of further development of the radiative aerothermodynamics based on state-tostate approaches.

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Experimental Investigations on the MHD Interaction Around a Blunt Body in a Hypersonic Unseeded Air Flows

Cited by 9 publications

References 16 publications

Mechanism analysis of magnetohydrodynamic shock control in hypersonic flow

Mechanism analysis of magnetohydrodynamic shock control in hypersonic flow

Non-Intrusive Characterization and Numerical Investigation on a Mach 10 Ionized Air Flow

Radiative Aerothermodynamics of Entering Space Vehicles: Toward the Use of State-to-State Approach

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