## Search

Now showing items 1-10 of 39

#### MHD flow past a circular cylinder using the immersed boundary method

(2010)

The immersed boundary method (IB hereafter) is an efficient numerical methodology for treating purely hydrodynamic flows in geometrically complicated flow-domains. Recently Grigoriadis et als. [1] proposed an extension of ...

#### 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 ...

#### 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 ...

#### Numerical simulations of turbulent flow in an eccentric annulus of unit eccentricity

(TSFP-9, 2015)

In this study, we perform Direct Numerical Simulations (DNS) of fully developed turbulent flows in eccentric annuli having different diameter ratios. Annuli of unit eccentricity, and diameter ratios of 0.2591 and 0.1395 ...

#### 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 ...

#### 3-D flow of Herschel-Bulkley fluids

(ASME, 1998)

The flow of Herschel-Bulkley fluids through a sudden 3-D square with expansion height ratio of 2:1 is studied numerically by solving the mass and momentum conservation equations along with a continuous constitutive relation. ...

#### Efficient treatment of complex geometries for large eddy simulations of turbulent flows

(2004)

Incompressible turbulent flow over a backward facing step at Reh=5100 is investigated by large eddy simulations (LES). The ratio of the oncoming boundary layer thickness δ to the step height h was set to 1.2. Additionally ...

#### Three-dimensional numerical simulations of magnetohydrodynamic flow around a confined circular cylinder under low, moderate, and strong magnetic fields

(2013)

This paper presents three-dimensional direct numerical simulations of liquid metal flow around a circular cylinder placed symmetrically in a rectangular duct, under a wide range of magnetic field intensities. Results are ...

#### Structure-based turbulence modeling for wall-bounded flows

(2000)

The performance of Reynolds stress transport (RST) models in non-equilibrium flows is limited by the lack of information about two dynamically important effects: The role of energy-containing turbulence structure ...

#### 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 ...