Aerodynamic and aeroacoustic analysis of a pulsating internal flow by a multidomain weak collocation spectral method

Kondaxakis, D; Tsangaris, S

dc.contributor.author	Kondaxakis, D	en
dc.contributor.author	Tsangaris, S	en
dc.date.accessioned	2014-03-01T01:27:50Z
dc.date.available	2014-03-01T01:27:50Z
dc.date.issued	2008	en
dc.identifier.issn	0169-5983	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18599
dc.subject	weak collocation spectral method	en
dc.subject	domain decomposition	en
dc.subject	incompressible Navier-Stokes equations	en
dc.subject	acoustic analogy	en
dc.subject	pulsating internal flow	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Fluids & Plasmas	en
dc.subject.other	NAVIER-STOKES EQUATIONS	en
dc.subject.other	LINEARIZED EULER EQUATIONS	en
dc.subject.other	FINITE-DIFFERENCE SCHEMES	en
dc.subject.other	WAVE-PROPAGATION PROBLEMS	en
dc.subject.other	COMPUTATIONAL AEROACOUSTICS	en
dc.subject.other	BOUNDARY-CONDITIONS	en
dc.subject.other	NUMERICAL-SIMULATION	en
dc.subject.other	SOUND GENERATION	en
dc.subject.other	SHEAR-LAYER	en
dc.subject.other	RADIATION	en
dc.title	Aerodynamic and aeroacoustic analysis of a pulsating internal flow by a multidomain weak collocation spectral method	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.fluiddyn.2007.07.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.fluiddyn.2007.07.002	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	A numerical methodology is presented for the coupled aerodynamic and aeroacoustic analysis of time dependent laminar viscous flows in general two-dimensional geometries. The overall procedure is constituted firstly by the solution of the incompressible Navier-Stokes equations and secondly by the solution of a linear evolution equation of second order in space and time which originates from Lighthill's acoustic analogy. A semi-implicit projection method is utilized for the time integration of the incompressible Navier-Stokes system, while a choice between a second order implicit Newmark scheme and a fourth order explicit Runge-Kutta-Nystrom method is offered for the temporal discretization of the wave equation. The multidomain weak Legendre collocation spectral method on quadrilateral subdomain topologies is employed for the spatial approximation of both the fluid dynamic and the acoustic problems. A specific pulsating internal flow inside a plane constricted channel is selected as a representative application for the assessment of the capabilities of the proposed discrete algorithm. Numerous results are presented and discussed, so as to thoroughly demonstrate the behavior of the numerical procedure. (C) 2007 The Japan Society of Fluid Mechanics and Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	FLUID DYNAMICS RESEARCH	en
dc.identifier.doi	10.1016/j.fluiddyn.2007.07.002	en
dc.identifier.isi	ISI:000255899800001	en
dc.identifier.volume	40	en
dc.identifier.issue	5	en
dc.identifier.spage	311	en
dc.identifier.epage	342	en