Shock-strength determination with seeded and seedless laser methods

Two noninvasive laser diagnostics were independently used to measure time-averaged and spatially resolved pressure change across a two-dimensional (2D) shock wave. The first method is Doppler global velocimetry (DGV) which uses water seeding and generates 2D maps of three-orthogonal components of ve...

Full description

Saved in:
Bibliographic Details
Published in:Measurement science & technology 2009-04, Vol.20 (4), p.045304-045304 (9)
Main Authors: Herring, G C, Meyers, James F, Hart, Roger C
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83
cites cdi_FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83
container_end_page 045304 (9)
container_issue 4
container_start_page 045304
container_title Measurement science & technology
container_volume 20
creator Herring, G C
Meyers, James F
Hart, Roger C
description Two noninvasive laser diagnostics were independently used to measure time-averaged and spatially resolved pressure change across a two-dimensional (2D) shock wave. The first method is Doppler global velocimetry (DGV) which uses water seeding and generates 2D maps of three-orthogonal components of velocity. A DGV-measured change in flow direction behind an oblique shock provides an indirect determination of pressure change across the shock, when used with the known incoming Mach number and ideal shock relations (or Prandtl-Meyer equations for an expansion fan). This approach was demonstrated at Mach 2 on 2D shock and expansion waves generated from a flat plate. This technique also works for temperature change (as well as pressure) and for normal shocks (as well as oblique). The second method, laser-induced thermal acoustics (LITA), is a seedless approach that was used to generate 1D spatial profiles of streamwise Mach number, sound speed, pressure and temperature over the same oblique waves. Excellent agreement was obtained between DGV and LITA, suggesting that either technique is viable for shock-strength measurement.
doi_str_mv 10.1088/0957-0233/20/4/045304
format article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_34349131</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>34349131</sourcerecordid><originalsourceid>FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83</originalsourceid><addsrcrecordid>eNp9kEtLxDAQx4MouD4-gtCTJ2snj6bpURZfsOBBPYc0mbrVvkyyiN_erpW9KJ4yZH7_meFHyBmFSwpKZVDmRQqM84xBJjIQOQexRxaUS5rKHOg-WeyYQ3IUwisAFFCWC7J8XA_2LQ3RY_8S14nDiL5rehOboU8-mukrIDp0iendd9liCElrAvqkw7geXDghB7VpA57-vMfk-eb6aXmXrh5u75dXq9QKKGPKGZtOw5rKwjjOnaJOTQ0DtUXOCiErSSUUlcFKMYtOgaytZZYJVgkwih-T83nu6If3DYaouyZYbFvT47AJmgsuSsrpBOYzaP0Qgsdaj77pjP_UFPRWmd7q0FsdmoEWelY25S7mXDOMu8ifqB5dPeHwG_9_wxcYVXpw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>34349131</pqid></control><display><type>article</type><title>Shock-strength determination with seeded and seedless laser methods</title><source>Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)</source><creator>Herring, G C ; Meyers, James F ; Hart, Roger C</creator><creatorcontrib>Herring, G C ; Meyers, James F ; Hart, Roger C</creatorcontrib><description>Two noninvasive laser diagnostics were independently used to measure time-averaged and spatially resolved pressure change across a two-dimensional (2D) shock wave. The first method is Doppler global velocimetry (DGV) which uses water seeding and generates 2D maps of three-orthogonal components of velocity. A DGV-measured change in flow direction behind an oblique shock provides an indirect determination of pressure change across the shock, when used with the known incoming Mach number and ideal shock relations (or Prandtl-Meyer equations for an expansion fan). This approach was demonstrated at Mach 2 on 2D shock and expansion waves generated from a flat plate. This technique also works for temperature change (as well as pressure) and for normal shocks (as well as oblique). The second method, laser-induced thermal acoustics (LITA), is a seedless approach that was used to generate 1D spatial profiles of streamwise Mach number, sound speed, pressure and temperature over the same oblique waves. Excellent agreement was obtained between DGV and LITA, suggesting that either technique is viable for shock-strength measurement.</description><identifier>ISSN: 0957-0233</identifier><identifier>EISSN: 1361-6501</identifier><identifier>DOI: 10.1088/0957-0233/20/4/045304</identifier><language>eng</language><publisher>IOP Publishing</publisher><ispartof>Measurement science &amp; technology, 2009-04, Vol.20 (4), p.045304-045304 (9)</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83</citedby><cites>FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids></links><search><creatorcontrib>Herring, G C</creatorcontrib><creatorcontrib>Meyers, James F</creatorcontrib><creatorcontrib>Hart, Roger C</creatorcontrib><title>Shock-strength determination with seeded and seedless laser methods</title><title>Measurement science &amp; technology</title><description>Two noninvasive laser diagnostics were independently used to measure time-averaged and spatially resolved pressure change across a two-dimensional (2D) shock wave. The first method is Doppler global velocimetry (DGV) which uses water seeding and generates 2D maps of three-orthogonal components of velocity. A DGV-measured change in flow direction behind an oblique shock provides an indirect determination of pressure change across the shock, when used with the known incoming Mach number and ideal shock relations (or Prandtl-Meyer equations for an expansion fan). This approach was demonstrated at Mach 2 on 2D shock and expansion waves generated from a flat plate. This technique also works for temperature change (as well as pressure) and for normal shocks (as well as oblique). The second method, laser-induced thermal acoustics (LITA), is a seedless approach that was used to generate 1D spatial profiles of streamwise Mach number, sound speed, pressure and temperature over the same oblique waves. Excellent agreement was obtained between DGV and LITA, suggesting that either technique is viable for shock-strength measurement.</description><issn>0957-0233</issn><issn>1361-6501</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAQx4MouD4-gtCTJ2snj6bpURZfsOBBPYc0mbrVvkyyiN_erpW9KJ4yZH7_meFHyBmFSwpKZVDmRQqM84xBJjIQOQexRxaUS5rKHOg-WeyYQ3IUwisAFFCWC7J8XA_2LQ3RY_8S14nDiL5rehOboU8-mukrIDp0iendd9liCElrAvqkw7geXDghB7VpA57-vMfk-eb6aXmXrh5u75dXq9QKKGPKGZtOw5rKwjjOnaJOTQ0DtUXOCiErSSUUlcFKMYtOgaytZZYJVgkwih-T83nu6If3DYaouyZYbFvT47AJmgsuSsrpBOYzaP0Qgsdaj77pjP_UFPRWmd7q0FsdmoEWelY25S7mXDOMu8ifqB5dPeHwG_9_wxcYVXpw</recordid><startdate>20090401</startdate><enddate>20090401</enddate><creator>Herring, G C</creator><creator>Meyers, James F</creator><creator>Hart, Roger C</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>20090401</creationdate><title>Shock-strength determination with seeded and seedless laser methods</title><author>Herring, G C ; Meyers, James F ; Hart, Roger C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Herring, G C</creatorcontrib><creatorcontrib>Meyers, James F</creatorcontrib><creatorcontrib>Hart, Roger C</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology &amp; Engineering</collection><collection>Engineering Research Database</collection><jtitle>Measurement science &amp; technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Herring, G C</au><au>Meyers, James F</au><au>Hart, Roger C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Shock-strength determination with seeded and seedless laser methods</atitle><jtitle>Measurement science &amp; technology</jtitle><date>2009-04-01</date><risdate>2009</risdate><volume>20</volume><issue>4</issue><spage>045304</spage><epage>045304 (9)</epage><pages>045304-045304 (9)</pages><issn>0957-0233</issn><eissn>1361-6501</eissn><notes>ObjectType-Article-2</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-1</notes><notes>content type line 23</notes><abstract>Two noninvasive laser diagnostics were independently used to measure time-averaged and spatially resolved pressure change across a two-dimensional (2D) shock wave. The first method is Doppler global velocimetry (DGV) which uses water seeding and generates 2D maps of three-orthogonal components of velocity. A DGV-measured change in flow direction behind an oblique shock provides an indirect determination of pressure change across the shock, when used with the known incoming Mach number and ideal shock relations (or Prandtl-Meyer equations for an expansion fan). This approach was demonstrated at Mach 2 on 2D shock and expansion waves generated from a flat plate. This technique also works for temperature change (as well as pressure) and for normal shocks (as well as oblique). The second method, laser-induced thermal acoustics (LITA), is a seedless approach that was used to generate 1D spatial profiles of streamwise Mach number, sound speed, pressure and temperature over the same oblique waves. Excellent agreement was obtained between DGV and LITA, suggesting that either technique is viable for shock-strength measurement.</abstract><pub>IOP Publishing</pub><doi>10.1088/0957-0233/20/4/045304</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0957-0233
ispartof Measurement science & technology, 2009-04, Vol.20 (4), p.045304-045304 (9)
issn 0957-0233
1361-6501
language eng
recordid cdi_proquest_miscellaneous_34349131
source Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
title Shock-strength determination with seeded and seedless laser methods
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-09-22T09%3A29%3A17IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Shock-strength%20determination%20with%20seeded%20and%20seedless%20laser%20methods&rft.jtitle=Measurement%20science%20&%20technology&rft.au=Herring,%20G%20C&rft.date=2009-04-01&rft.volume=20&rft.issue=4&rft.spage=045304&rft.epage=045304%20(9)&rft.pages=045304-045304%20(9)&rft.issn=0957-0233&rft.eissn=1361-6501&rft_id=info:doi/10.1088/0957-0233/20/4/045304&rft_dat=%3Cproquest_cross%3E34349131%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c409t-322045ef167ad33d81d8409a0fce32746b61607baeb82ced806fcc2c242b40a83%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=34349131&rft_id=info:pmid/&rfr_iscdi=true