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Response of the Patterson Probe in the Transition Flow Regime

Grabe, Martin (2012) Response of the Patterson Probe in the Transition Flow Regime. 28th International Symposium on Rarefied Gas Dynamics, RGD28, 09. - 13. Jul. 2012, Zaragoza, Spain.

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Official URL: http://rgd28.es/

Abstract

The free-molecular impact pressure probe, also known as Patterson probe, is known and applied for more than half a century now to deduce the number flux of a single species in highly rarefied inert flow. While the working principle is conceptually simple, interpretation of the gauge readings may not be, but approximate formulas for evaluation exist. In the context of cold-gas plume flow and interaction experiments with the obvious large variations in Mach and Knudsen numbers, it may not be clear initially, whether the signals measured with the Patterson probe are obtained in free-molecular flow environment, and hence, whether the mentioned evaluation techniques may be employed. A series of numerical experiments have been conducted using the Direct Simulation Monte-Carlo method, to study the response of the Patterson probe to prescribed free-stream conditions in the transitional flow regime. From the computational results we infer analytical expressions that describe the probe response in transitional regime at zero angle of attack.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Proceedings of the International Symposium on Rarefied Gas Dynamics erscheinen beim American Institute of Phyiscs (AIP Conference Proceedings)
Title:Response of the Patterson Probe in the Transition Flow Regime
Authors:
AuthorsInstitution or Email of Authors
Grabe, Martinmartin.grabe@dlr.de
Date:12 July 2012
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 72
Series Name:Book of Abstracts
Status:Published
Keywords:Free-molecular pressure probe, transition flow regime, Direct Simulation Monte Carlo, experimental procedures, Patterson probe, transition regime
Event Title:28th International Symposium on Rarefied Gas Dynamics, RGD28
Event Location:Zaragoza, Spain
Event Type:international Conference
Event Dates:09. - 13. Jul. 2012
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Raumfahrzeugsysteme - Anlagen u. Messtechnik (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Martin Grabe
Deposited On:03 Aug 2012 09:49
Last Modified:03 Aug 2012 09:49

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