Simulation of phase contrast MRI of turbulent flow.

Experimental study and numerical simulation of three dimensional two phase impinging jet flow using anisotropic turbulence model

Hydrodynamic of a turbulent impinging jet on a flat plate has been studied experimentally and numerically. Experiments were conducted for the Reynolds number range of 72000 to 102000 and a fixed jet-to-plate dimensionless distance of H/d=3.5. Based on the experimental setup, a multi-phase numerical model was simulated to predict flow properties of impinging jets using two turbulent models. Mesh...

Numerical simulation of nanofluid flow over diamond-shaped elements in tandem in laminar and turbulent flow

In this paper, the Al2O3-water nanofluid flow in laminar and turbulent flows inside tubes fitted with diamond-shaped turbulators is numerically modeled. The nanofluid flow is modeled by employing a two-phase mixture method and applying the constant heat flux boundary condition at tube walls. In the results, the effects of different parameters such as the geometry of turbulators, volume fraction...

Simulation of Phase-Contrast MRI Intravoxel Velocity Standard Deviation (IVSD) Mapping

Introduction: Disturbed blood flow, characterized by velocity fluctuations, accompanies many cardiovascular diseases and may contribute to their progression [1]. Phase-contrast (PC) MRI intravoxel velocity standard deviation (IVSD, σ) mapping permits the quantification of the intensity of velocity fluctuations (turbulence intensity) [2]. This is achieved by exploiting how the presence of multip...

Investigations of Three- Dimensional Turbulent Cavity Flow Using Large Eddy Simulation Approach

Gas Absorption with Chemical Reaction in Turbulent Flow

In order to increase the rate of gas absorption, chemical reaction in the liquid phase is considered. The purpose of this paper was to simulate gas absorption process by a liquid film over a spherical packing incorporating eddy viscosity and diffusivity. Second order chemical reaction for two different cases (fast and slow) were considered. The system partial differential equations obtained...