OPTIMIZATION OF FLUID DYNAMICS BY SHEAR THINNING IN STIRRED TANKS USING ANCHOR STIRRERS WITH CONVERGENT HOLLOWS
Agitator shapes are of paramount importance in mixing processes, prompting researchers to explore new configurations to improve these operations. Our study focuses on the three-dimensional fluid dynamics in a flat-bottomed cylindrical tank equipped with different anchor shapes, ranging from the standard configuration to modified variants. Using bot...
By Abderrahim Sidi Mohammed Nekrouf, Sarra Youcefi, Mohamed Bouzit
NUMERICAL SIMULATION SHEAR-THICKENING FLUID THROUGH A SMALL-SCALED HEAT EXCHANGER
This paper aims to predict the behavior of a complex fluid though a small-sized thermal exchanger. The fluid used is of shear-thickening type of power-law index (n = 1.4) and Prandtl number (Pr = 50). The Ostwald model was utilized to define the dynamic viscosity. The exchanger consists of three rectangular cross-section tubes placed inside a therm...
By Hacène Hamoudi, Mohamed Bouzit
UNSTEADY NUMERICAL INVESTIGATION OF FERROFLUID FORCED CONVECTION OVER A DOWNWARD STEP CONTAINING A ROTATING FINNED CYLINDER
The unsteady investigation of ferrofluid flow forced convection over a downward step containing a rotating finned cylinder is conducted numerically. The dimensionless partial differential equations of conservation equations for mass, momentum and energy and the boundary conditions associated with them are solved by using the finite element method. ...
By Meriem Toumi, Mohamed Bouzit, Abderrahim Mokhefi, Djamila Derbal
EFFECT OF VERTICAL POSITION OF HEATED SQUARE OBSTACLE ON NATURAL CONVECTION IN POROUS CAVITIES SATURATED BY A NANOFLUID USING BUONGIORNO'S TWO PHASE MODEL
Laminar flow, heat transfer and mass transfer of nanofluid in a porous medium have been studied using Buongiorno’s two phase model. The porous medium in place is a non-uniform octagonal shape. In order to increase the rate of heat transfer within the porous cavity, it has been equipped with a heated square at different vertical p...
By Fatima-Z Khelif, Mustapha Helmaoui, Mohamed Bouzit, Abderrahim Mokhefi