## Search

Now showing items 11-20 of 39

#### The ASBM-SA turbulence closure: Taking advantage of structure-based modeling in current engineering CFD codes

(2015)

Structure-based turbulence models (SBM) carry information about the turbulence structure that is needed for the prediction of complex non-equilibrium flows. SBM have been successfully used to predict a number of canonical ...

#### Solution of viscoplastic flows with the finite volume / multigrid method

(National Technical University of Athens, 2013)

We investigate the performance of the finite volume method in solving viscoplastic flows. The square lid-driven cavity flow of a Bingham plastic is chosen as the test case and the constitutive equation is regularised as ...

#### Dispersed-phase structure in sheared MHD turbulence

(2012)

Direct numerical simulations are performed to examine particle dispersion in homogeneous turbulence subjected to mean shear and an externally applied magnetic field. We employ the Brucker et al. algorithm for simulating ...

#### Magnetohydrodynamic turbulence at moderate magnetic Reynolds number

(2004)

We consider the case of homogeneous turbulence in a conducting fluid that is exposed to a uniform external magnetic field at low to moderate magnetic Reynolds numbers (by moderate we mean here values as high as 20). When ...

#### Large-eddy simulations of unidirectional water flow over dunes

(2009)

The unidirectional, subcritical flow over fixed dunes is studied numerically using large-eddy simulation, while the immersed boundary method is implemented to incorporate the bed geometry. Results are presented for a typical ...

#### Laminar free convection in a square enclosure driven by the Lorentz force

(2010)

A numerical study is presented of laminar free convection flow driven by magnetic forces. An external magnetic field with one spatially varying component is applied to an electrically conducting fluid in a square enclosure. ...

#### Three dimensional flow around a circular cylinder confined in a plane channel

(2011)

This paper presents two- and three-dimensional direct numerical simulations of the flow around a circular cylinder placed symmetrically in a plane channel. Results are presented in the Reynolds number range (based on the ...

#### Thixotropic flow past a cylinder

(2014)

We study the flow of a thixotropic fluid around a cylinder. The rheology of the fluid is described by means of a structural viscoplastic model based on the Bingham constitutive equation, regularised using the Papanastasiou ...

#### Direct numerical simulation of particle laden flow in a human airway bifurcation model

(2016)

During the delivery of inhaled medicines, and depending on the size distribution of the particles in the formulation, airway bifurcations are areas of preferential deposition. Previous studies of laminar flow through airway ...

#### On the transition to turbulence of a viscoplastic fluid past a confined cylinder: A numerical study

(2015)

Three-dimensional direct numerical simulations of a Bingham fluid flowing past a confined circular cylinder have been used in order to investigate viscoplastic effects in the wake-transition regime. The case of a cylinder ...