Conveners
Plasma facilities, simulations and diagnostics
- There are no conveners in this block
Plasma facilities, simulations and diagnostics
- Brett Cruden (AMA Inc/NASA Ames)
-
Mr Sanjeev Kumar (University of Illinois at Urbana-Champaign)10/09/2024, 09:00Plasma facilities, simulations and diagnostics
Background of the study
To prevent damage to a re-entry vehicle, its windward side must be protected by a heat shield made from advanced thermal protection materials (TPMs). In-flight testing of new TPMs is prohibitively expensive, so the extreme heat experienced during hypersonic re-entry is simulated by exposing a TPM sample to a hot plasma jet. Inductively coupled plasma (ICP)...
Go to contribution page -
Alessandro Munafo10/09/2024, 09:25Plasma facilities, simulations and diagnostics
The calculation of reactive flows such as those found in hypersonics, combustion, laser-plasma interactions and gas discharges requires a theoretical framework encompassing non-equilibrium thermodynamics, transport, collisional and radiative kinetics as well as gas-surface interactions and electromagnetics. In many situations the multi-component working fluid may be viewed as a collection of...
Go to contribution page -
Enrico Anfuso (Vrije Universiteit Brussel & von Karman Institute)10/09/2024, 09:50Plasma facilities, simulations and diagnostics
Plasma wind tunnels are fundamental assets when designing Thermal Protection Systems (TPS) for re-entry capsules or the demise process of Space Debris (SD) subjected to uncontrolled atmospheric re-entry. In ground, thermal and momentum variables such as enthalpy, pressure and velocity must be accurately measured to reproduce the aerothermochemical environment of the hypersonic flow experienced...
Go to contribution page -
Georg Herdrich (Institute of Space Systems, University of Stuttgart)10/09/2024, 10:15Plasma facilities, simulations and diagnostics
At the Institute of Space Systems (IRS) of the University of Stuttgart three plasma wind tunnels (PWK1, PWK3, PWK4) are operated to experimentally simulate spacecraft entry into a large variety of atmospheres. In this work, the facilities PWK1 and PWK3 are used to study plasma emission relevant for Mars entry and hyperbolic Earth entry, respectively. In both scenarios, radiative heat flux...
Go to contribution page -
Massimo Franco (University of Illinois Urbana-Champaign)11/09/2024, 09:00Plasma facilities, simulations and diagnostics
In this work, we examine the use of an in-house developed slug calorimeter in the 350 kW inductively coupled plasma (ICP) wind tunnel at the Plasmatron X facility, developed by the Center for Hypersonics & Entry System Studies (CHESS) at the University of Illinois Urbana-Champaign. Plasmatron X is currently the largest ICP facility in the United States, which allows near-continuous operation,...
Go to contribution page -
Giannino Ponchio Camillo11/09/2024, 09:25High speed facilities, flight testing and propulsion
Background
The state of the boundary layer has a large role in the investigation of high-speed flow fields for aerospace applications. A turbulent boundary layer causes heat flux on the surface of a hypersonic vehicle to dramatically increase when compared to the laminar case. Performance is also impacted by boundary layer turbulence due to increased skin friction drag, and...
Go to contribution page -
Gilles COURRET (HEIG-VD)11/09/2024, 09:50Plasma facilities, simulations and diagnostics
Background of the study
Recent studies [1, 2] indicate that Navier-Stokes Fourier-based CFD struggles to predict high-temperature hypersonic flows above 50 km, necessitating the inclusion of bulk viscosity (BV) and vibrational nonequilibrium effects [3, 4]. While the Stokes hypothesis often sets BV to zero, it is crucial for hypersonics [5, 6, 8], with potential for negative values in...
Go to contribution page -
David Steuer (HEFDiG, Institute of Space Systems, University of Stuttgart)11/09/2024, 10:15Plasma facilities, simulations and diagnostics
In the plasma wind tunnel facilities PWK1/2 and PWK4 of the Institute of Space Systems, the high-enthalpy flow field is generated using electric arc-jet generators. A sample positioned downstream of the nozzle is thus exposed to a combination of radiative, convective, and chemical heating from the plasma flow, but potentially also from radiation originating from the generator. Assessing the...
Go to contribution page