000858011 001__ 858011
000858011 005__ 20210129235818.0
000858011 0247_ $$2doi$$a10.1016/j.crme.2018.07.006
000858011 0247_ $$2ISSN$$a1631-0721
000858011 0247_ $$2ISSN$$a1873-7234
000858011 037__ $$aFZJ-2018-06955
000858011 082__ $$a530
000858011 1001_ $$0P:(DE-HGF)0$$aCetin, Mehmet Onur$$b0$$eCorresponding author
000858011 245__ $$aComputational analysis of exit conditions on the sound field of turbulent hot jets
000858011 260__ $$aParis$$bElsevier$$c2018
000858011 3367_ $$2DRIVER$$aarticle
000858011 3367_ $$2DataCite$$aOutput Types/Journal article
000858011 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1544001510_14780
000858011 3367_ $$2BibTeX$$aARTICLE
000858011 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000858011 3367_ $$00$$2EndNote$$aJournal Article
000858011 520__ $$aA hybrid computational fluid dynamics (CFD) and computational aeroacoustics (CAA) method is used to compute the acoustic field of turbulent hot jets at a Reynolds number and a Mach number . The flow field computations are performed by highly resolved large-eddy simulations (LES), from which sound source terms are extracted to compute the acoustic field by solving the acoustic perturbation equations (APE). Two jets are considered to analyze the impact of exit conditions on the resulting jet sound field. First, a jet emanating from a fully resolved non-generic nozzle is simulated by solving the discrete conservation equations. This computation of the jet flow is denoted free-exit-flow (FEF) formulation. For the second computation, the nozzle geometry is not included in the computational domain. Time averaged exit conditions, i.e. velocity and density profiles of the first formulation, plus a jet forcing in form of vortex rings are imposed at the inlet of the second jet configuration. This formulation is denoted imposed-exit-flow (IEF) formulation. The free-exit-flow case shows up to 50% higher turbulent kinetic energy than the imposed-exit-flow case in the jet near field, which drastically impacts noise generation. The FEF and IEF configurations reveal quite a different qualitative behavior of the sound spectra, especially in the sideline direction where the entropy source term dominates sound generation. This difference occurs since the noise sources generated by density and pressure fluctuations are not perfectly modeled by the vortex ring forcing method in the IEF solution. However, the total overall sound pressure level shows the same qualitative behavior for the FEF and IEF formulations. Towards the downstream direction, the sound spectra of the FEF and IEF solutions converge.
000858011 536__ $$0G:(DE-HGF)POF3-899$$a899 - ohne Topic (POF3-899)$$cPOF3-899$$fPOF III$$x0
000858011 588__ $$aDataset connected to CrossRef
000858011 7001_ $$0P:(DE-Juel1)176474$$aKoh, Seong Ryong$$b1$$ufzj
000858011 7001_ $$0P:(DE-HGF)0$$aMeinke, Matthias$$b2
000858011 7001_ $$0P:(DE-HGF)0$$aSchröder, Wolfgang$$b3
000858011 773__ $$0PERI:(DE-600)2079504-X$$a10.1016/j.crme.2018.07.006$$gVol. 346, no. 10, p. 932 - 947$$n10$$p932 - 947$$tComptes rendus mécanique$$v346$$x1631-0721$$y2018
000858011 909CO $$ooai:juser.fz-juelich.de:858011$$pextern4vita
000858011 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)176474$$aForschungszentrum Jülich$$b1$$kFZJ
000858011 9101_ $$0I:(DE-588b)36225-6$$6P:(DE-HGF)0$$aRWTH Aachen$$b2$$kRWTH
000858011 9101_ $$0I:(DE-588b)36225-6$$6P:(DE-HGF)0$$aRWTH Aachen$$b3$$kRWTH
000858011 9131_ $$0G:(DE-HGF)POF3-899$$1G:(DE-HGF)POF3-890$$2G:(DE-HGF)POF3-800$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bProgrammungebundene Forschung$$lohne Programm$$vohne Topic$$x0
000858011 9141_ $$y2018
000858011 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bCR MECANIQUE : 2017
000858011 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS
000858011 915__ $$0StatID:(DE-HGF)0600$$2StatID$$aDBCoverage$$bEbsco Academic Search
000858011 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer Review$$bASC
000858011 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List
000858011 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index
000858011 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection
000858011 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded
000858011 915__ $$0StatID:(DE-HGF)1160$$2StatID$$aDBCoverage$$bCurrent Contents - Engineering, Computing and Technology
000858011 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5
000858011 920__ $$lno
000858011 980__ $$ajournal
000858011 980__ $$aEDITORS
000858011 980__ $$aI:(DE-Juel1)JSC-20090406
000858011 9801_ $$aEXTERN4VITA