Objective model for the fluctuating pressure-strain-rate correlations

Dafalias, YF; Younis, BA

dc.contributor.author	Dafalias, YF	en
dc.contributor.author	Younis, BA	en
dc.date.accessioned	2014-03-01T01:31:29Z
dc.date.available	2014-03-01T01:31:29Z
dc.date.issued	2009	en
dc.identifier.issn	0733-9399	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19803
dc.subject	Fluid mechanics	en
dc.subject	Pressure	en
dc.subject	Strain rates	en
dc.subject	Turbulence	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Correlation tensors	en
dc.subject.other	Fluctuating pressures	en
dc.subject.other	Inertial frames	en
dc.subject.other	Intrinsic spin	en
dc.subject.other	Isotropic function	en
dc.subject.other	Non-inertial frame	en
dc.subject.other	Objective models	en
dc.subject.other	Representation theorem	en
dc.subject.other	Rotating frame	en
dc.subject.other	System rotation	en
dc.subject.other	Turbulence closures	en
dc.subject.other	Turbulent shear flows	en
dc.subject.other	Contacts (fluid mechanics)	en
dc.subject.other	Fluid mechanics	en
dc.subject.other	Rotation	en
dc.subject.other	Shear flow	en
dc.subject.other	Spin dynamics	en
dc.subject.other	Tensors	en
dc.subject.other	Turbulence	en
dc.subject.other	Vorticity	en
dc.subject.other	Strain rate	en
dc.subject.other	accuracy assessment	en
dc.subject.other	calibration	en
dc.subject.other	correlation	en
dc.subject.other	flow modeling	en
dc.subject.other	fluid mechanics	en
dc.subject.other	inertia	en
dc.subject.other	isotropy	en
dc.subject.other	numerical model	en
dc.subject.other	pressure effect	en
dc.subject.other	shear flow	en
dc.subject.other	strain rate	en
dc.subject.other	theoretical study	en
dc.subject.other	turbulence	en
dc.subject.other	vorticity	en
dc.title	Objective model for the fluctuating pressure-strain-rate correlations	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)EM.1943-7889.0000014	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.0000014	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Representation theorems for isotropic functions are used to construct a closure model for the fluctuating pressure-strain-rate correlation tensor. In contrast to alternative proposals in the literature, the present model does not include a dependence on the vorticity in inertial frames or on the intrinsic spin tensor in noninertial frames because it is shown that this dependence violates objectivity which has been previously suggested to be an essential property of a turbulence closure. The proposed model is calibrated using data from homogeneous shear flows in inertial frames and is tested against data from a variety of turbulent shear flow, in both fixed and rotating frames, with generally very encouraging results. In particular, the results conclusively demonstrate that the absence of dependence on vorticity and intrinsic spin in the model for the pressure-strain-rate correlations does not adversely impact its ability to accurately predict the effects of system rotation on the turbulence. © 2009 ASCE.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of Engineering Mechanics	en
dc.identifier.doi	10.1061/(ASCE)EM.1943-7889.0000014	en
dc.identifier.isi	ISI:000269061700012	en
dc.identifier.volume	135	en
dc.identifier.issue	9	en
dc.identifier.spage	1006	en
dc.identifier.epage	1014	en