Browsing by Subject "Tensors"
Now showing items 110 of 10

Article
An analytical solution for rapidly distorted turbulent shear flow in a rotating frame
(2006)In this study we apply rapid distortion theory to the case of nonstratified homogeneous turbulence that is sheared in a frame that counterrotates at a rate that matches in magnitude the rotation associated with the mean ...

Conference Object
Compression molding of semiconcentrated fiber suspensions: Flow and fiber orientation
(Publ by ASME, 1993)The focus of this paper is compression molding of semiconcentrated fiber suspensions. During compression molding a premeasured amount of raw material (charge) is placed between two halves of a die. The die is then closed ...

Article
The contribution of active and inactive structures to the statistics of a turbulent pipe flow
(2017)The current study is a short followup to our most recent work (Stylianou et al., 2016), where among other things we have presented an effective criterion suitable for distinguishing largescale coherent structures with ...

Conference Object
Injection molding of dilute and semidilute fiber suspensions
(Publ by ASME, 1992)The focus of this paper is unsteady flow of semidilute fiber suspensions in complex geometries. These flows are typical of injection molding problems in which the raw material in granular form, usually plastic resin mixed ...

Article
On the linear stability of turbulent plane strain flow in a rotating frame
(2007)We apply inviscid rapid distortion theory to the limiting hyperbolic case of turbulent plain strain flow in a rotating frame and investigate the dependence of the evolution of the turbulent kinetic energy on the frame ...

Article
Rapid shear of initially anisotropic turbulence in a rotating frame?
(2007)In the present study, we investigate, using inviscid rapid distortion theory, the evolution of sheared turbulence in a rotating frame as a function of the rotation rate (including stable, transitional, and unstable regimes), ...

Article
Representing anisotropy of twopoint secondorder turbulence velocity correlations using structure tensors
(2008)A locally homogeneous representation for the twopoint, secondorder turbulent velocity fluctuation Rij(x,r) = 〈u′i(x)u′i(x+r)〉 is formulated in terms of three linearly independent structure tensors [Kassinos et al., J. ...

Article
A structurebased model for transport in stably stratified homogeneous turbulent flows
(2017)We present an extension that allows a recently proposed structurebased model for turbulent scalar transport to account for buoyancy effects. The proposed model is based on a generalization of the Interactive Particle ...

Article
The transport of a passive scalar in magnetohydrodynamic turbulence subjected to mean shear and frame rotation
(2007)We consider the transport of a passive scalar under the influence of homogeneous turbulence in a conducting fluid that is exposed to a uniform external magnetic field while being sheared in fixed and rotating frames. The ...

Article
Unsteady flow of semiconcentrated suspensions using finite deformation tensors
(1994)The interest in the theoretical investigation of the flow behavior of fiber suspensions during manufacturing processes has increased considerably due to the increased interest in the use of composite materials. The unsteady ...