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Numerical and Experimental Analysis of Low-Density Effects in Suborbital Flight of FAST20XX

Votta, Raffaele and Ranuzzi, Giuliano and Marini, Marco and Morsa, Luigi and Fels, Giorgio and Schlegat, Thomas and Hannemann, Klaus (2012) Numerical and Experimental Analysis of Low-Density Effects in Suborbital Flight of FAST20XX. 43rd AIAA Thermophysics Conference, 25.-28. Jun. 2012, New Orleans, Louisiana, USA. doi: 10.2514/6.2012-3107. ISBN eISBN: 978-1-62410-186-1.

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Official URL: http://www.aiaa.org


Subject of the present paper has been the experimental and numerical characterization of test chamber flow of DLR-V2G low-density wind tunnel, in the frame of EC FAST20XX project activities dedicated to the validation of numerical tools able to predict rarefaction effects in suborbital flight. Pitot pressure radial profiles measured at different positions downstream the test chamber have been compared at nozzle exit to numerical results obtained with different methodologies accounting for rarefaction effects (CFD with slip-flow boundary conditions, a hybrid CFD-DSMC procedure), and a re-definition of the V2G facility envelope in terms of flight-relevant parameters (Mach, Reynolds, Knudsen numbers) has been presented. A good agreement between experiments and numerical results has been achieved, thus confirming that the “actual” test chamber flow knowledge is of fundamental importance for a proper numerical rebuilding of an experimental test campaign.

Item URL in elib:https://elib.dlr.de/77555/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Numerical and Experimental Analysis of Low-Density Effects in Suborbital Flight of FAST20XX
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Votta, RaffaeleCIRA, ItalyUNSPECIFIED
Ranuzzi, GiulianoCIRA, ItalyUNSPECIFIED
Morsa, LuigiUniversity Federico II, Naples, ItalyUNSPECIFIED
Fels, GiorgioUniversity Federico II, Naples, ItalyUNSPECIFIED
Schlegat, ThomasThomas.Schlegat (at) dlr.deUNSPECIFIED
Hannemann, KlausKlaus.Hannemann (at) dlr.deUNSPECIFIED
Refereed publication:No
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:No
DOI :10.2514/6.2012-3107
Page Range:pp. 1-23
Series Name:Conference Proceedings online
ISBN:eISBN: 978-1-62410-186-1
Keywords:rarefied flow, low density, Vacuum wind tunnel; V2G; VxG; nozzle flow; pitot pressure measurements; experimental and numerical analysis; CFD; DSMC; FAST20XX
Event Title:43rd AIAA Thermophysics Conference
Event Location:New Orleans, Louisiana, USA
Event Type:international Conference
Event Dates:25.-28. Jun. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - EU Projekte Raumtransport (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Schlegat, Thomas
Deposited On:20 Nov 2012 11:41
Last Modified:20 Nov 2012 11:41

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