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PROBES IN TRANSONIC FLOW

Kost, Friedrich (2008) PROBES IN TRANSONIC FLOW. In: XIX Biannual Symposium on Measuring Techniques in Turbomachinery, Transonic and Supersonic Flow in Cascades and Turbomachines, Rhode-St-Genèse, Belgium, April 7-8, 2008. XIX Biannual Symposium on Measuring Techniques in Turbomachinery, Transonic and Supersonic Flow in Cascades and Turbomachines, 2008-04-07 - 2008-04-08, Rhode-St-Genèse, Belgium.

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Abstract

A constraint exists for intrusive probes in transonic flow which leads to a complete insensitivity to static pressure at Mach number Ma=1. Nearby Mach number unity different types of probes are affected more or less by the reduced sensitivity to static pressure or Mach number. In this paper three types of probes are compared and it is shown that the reduced sensitivity near Ma=1 causes large errors when the flow Mach number is determined by a conventional probe. A closer look onto the pressure distribution of a blunt body reveals that only the front part of a probe is subject to the constraint while base pressure is not affected. Therefore a base pressure tapping was added to a conventional Cobra type probe. The new probe was calibrated in the Probe Calibration Facility of DLR Göttingen at a wide range of Mach numbers and at two Reynolds numbers.

Item URL in elib:https://elib.dlr.de/53903/
Document Type:Conference or Workshop Item (Speech)
Title:PROBES IN TRANSONIC FLOW
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kost, FriedrichDLRUNSPECIFIED
Date:April 2008
Journal or Publication Title:XIX Biannual Symposium on Measuring Techniques in Turbomachinery, Transonic and Supersonic Flow in Cascades and Turbomachines, Rhode-St-Genèse, Belgium, April 7-8, 2008
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Arts, TonyVon Karman Institute
Status:Published
Keywords:Measurement in Turbomachines, Transonic Flow, Probes
Event Title:XIX Biannual Symposium on Measuring Techniques in Turbomachinery, Transonic and Supersonic Flow in Cascades and Turbomachines
Event Location:Rhode-St-Genèse, Belgium
Event Type:Other
Event Dates:2008-04-07 - 2008-04-08
Organizer:Von Karman Institute, Rhode-St-Genèse, Belgium
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Propulsion Technology > Turbine
Deposited By: Kost, Dr.rer.nat. Friedrich
Deposited On:18 Apr 2008
Last Modified:31 Jul 2019 19:22

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