Investigation of the Herschel-Quincke tube concept in a rectangular lined duct

Simple item page
dc.contributor.authorKim, Jeonghoonen
dc.contributor.committeechairBurdisso, Ricardo A.en
dc.contributor.committeememberJohnson, Martin E.en
dc.contributor.committeememberNg, Faien
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:51:18Zen
dc.date.adate2001-12-28en
dc.date.available2014-03-14T21:51:18Zen
dc.date.issued2002-09-20en
dc.date.rdate2003-05-11en
dc.date.sdate2001-12-09en
dc.description.abstractIn this research an innovative combination of the Herschel-Quincke tubes and traditional liners is proposed for application in noise reduction of aircraft engines. The approach consists of installing Herschel-Quincke (HQ) tubes on lined rectangular ducts. An analytical model was developed to predict the effects of HQ tubes applied to rectangular lined ducts. The technique involves assuming the tube-duct interfaces as finite piston sources. These sources couple the acoustic field inside the duct with the acoustic field within the HQ tubes. The accuracy of the analytical model was validated with experimental data. Three different types of experimental configurations were tested: liner only, HQ tube with a hard wall duct, and HQ tubes with liners. Analytical predictions were shown to correlate well with the experimental data. Two typical types of liners, perforate and linear, were tested in these investigations. The perforate and linear liners with HQ systems showed better sound attenuations than the HQ tubes with hard walled ducts and liners only systems. The performance of the perforate and linear liners with HQ tubes were investigated in various configurations. The results indicated possible combinations which show great potential for reducing the noise within the ducts.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-12092001-192433en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12092001-192433/en
dc.identifier.urihttp://hdl.handle.net/10919/46175en
dc.publisherVirginia Techen
dc.relation.haspartMasterThesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectHerschel-Quinckeen
dc.subjecthigher-order modesen
dc.subjectaeroacousticsen
dc.subjectlineren
dc.titleInvestigation of the Herschel-Quincke tube concept in a rectangular lined ducten
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
MasterThesis.pdf
Size:
2.42 MB
Format:
Adobe Portable Document Format
Download

Collections

Masters Theses