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    Effect of turbulence models' choice on the aero-thermal flow numerical validations within a ribbed trailing edge geometry
    (Sage, 2019) Beniaiche, Ahmed; Nadir, Mahmoud; Mahfoudh, Cerdoun; Carcasci, Carlo; Facchini, Bruno
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    Heat transfer related to a self-sustained oscillating plane jet flowing inside a rectangular cavity
    (IEEE, 2014) Iachachene, Farida; Matoui, A.; Halouane, Yacine
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    Turbulent heat transfer for impinging jet flowing inside a cylindrical hot cavity
    (Serbian Society of Heat Transfer Engineers, 2015) Halouane, Yacine; Mataoui, Amina; Iachachene, Farida
    Convective heat transfer from an isothermal hot cylindrical cavity due to a turbulent round jet impingement is investigated numerically. Three-dimensional turbulent flow is considered in this work. The Reynolds stress second order turbulence model with wall standard treatment is used for the turbulence predictions the problem parameters are the jet exit Reynolds number, ranging from 2·104 to 105 and the normalized impinging distance to the cavity bottom and the jet exit Lf, ranging from 4 to 35. The computed flow patterns and isotherms for various combinations of these parameters are analyzed in order to understand the effect of the cavity confinement on the heat transfer phenomena. The flow in the cavity is divided into three parts, the area of free jet, and the area of the jet interaction with the reverse flow and the semi-quiescent flow in the region of the cavity bottom. The distribution of the local and mean Nusselt numbers along the cavity walls for above combinations of the flow parameters are detailed. Results are compared against to corresponding cases for impinging jet on a plate for the case of the bottom wall. The analysis reveals that the average Nusselt number increases considerably with the jet exit Reynolds number. Finally, it was found that the average Nusselt number at the stagnation point could be correlated by a relationship in the form Nu = f(Lf, Re)
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    Heat transfer investigation in new cooling schemes of a stationary blade trailing edge
    (Elsevier, 2015) Beniaiche, A.; Ghenaiet, A.; Carcasci, C.; Facchini, B.
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    Numerical investigations on heat transfer of self-sustained oscillation of a turbulent jet flow inside a cavity
    (American Society of Mechanical Engineers (ASME), 2015) Iachachene, Farida; Mataou, Amina; Halouane, Yacine
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    Numerical study of a thermodependent non-Newtonian fluid flow between vertical concentric cylinders
    (Elsevier, 2007) Zeraibi, Noureddine; Amoura, M.; Benzaou, A.; Gareche, Mourad
    In this paper, we present a numerical investigation of the thermal convection for a thermodependent non-Newtonian fluid in an annular space between two coaxial rotating cylinders. The rheological behaviour of the fluid can be expressed through the Ostwald-De-Waele power law: View the MathML sourceτ=Kγ˙n; all fluid properties except consistency index K are constant. K–T relation used is K = K0e−bT. The problem is studied when the heated inner cylinder is rotating around the common axis with constant angular velocity and the cooled outer cylinder is at the rest. The horizontal endplates are assumed adiabatic. The governing equations are solved using mixed finite elements method. The influence of the temperature on the structure of the dynamic and thermal fields is examined
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    Finite element study of mixed convection for non-Newtonian fluid between two coaxial rotating cylinders
    (2006) Amoura, Mourad; Zeraibi, Noureddine; Smati, A.; Gareche, Mourad
    In this work, we present a numerical simulation of the flow characteristics and the heat transfer mechanism of a non-Newtonian fluid in an annular space between two coaxial rotating cylinders. The Carreau stress–strain relation was adopted to model the rheological fluid behaviour. The problem is studied when the heated inner cylinder rotates around the common axis with constant angular velocity and the cooled outer cylinder is at the rest. The horizontal endplates are assumed adiabatic. The governing equations are solved using mixed finite elements method. The effects of the different parameters on the heat transfer and on the flow are examined. These parameters are the Reynolds (Re), the Grashof (Gr) and the Weissenberg numbers (We), and the flow index (n). The results of the natural, forced and mixed convections are presented and discussed. © 2006 Elsevier Ltd. All rights reserved