Uncertainties may skew the understanding of experiments or numerical simulations results. The impact flow parameters uncertainties measurement on wall heat flux is investigated in a non-isothermal turbulent channel flow. A transfer correlation dedicated to gas-pressurized solar receivers concentrated tower power used. Both symmetric and asymmetric heating conditions are tested. sensitivity stud...

The conditions for the onset of dissipation thermal instability with temperature-dependent viscosity in plane Couette flow a Newtonian fluid are analyzed. studied system consists horizontal layer confined between an adiabatic (fixed) lower wall and isothermal (moving) upper wall. Both exponential linear fluidity models considered order to account thermodependency fluid’s viscosity. stability an...

A rapid and efficient DNA extraction method was developed for detecting mastitis pathogens in milk. The first critical step involved cell wall disruption by bead-beating, as physical disruption using beads was more effective for DNA extraction from Gram-positive bacteria, such as Staphylococcus aureus, than enzymatic disruption using proteinase K. The second critical step involves the use of ac...

Abstract: Numerical visualization of heat transport for convective heat transfer were studied by two-dimensional heat function formulation within a trapezoidal cavity, differentially heated in the vertical direction, is presented. Penalty finite element method is used to obtain the isotherm lines, streamlines and heatlines to perceive the understanding of heat and fluid flow. Numerical results ...

In this paper, a recent curved non-slip wall boundary treatment for isothermal Lattice Boltzmann equation (LBE) [Z. Guo, C. Zheng and B. Shi, Phys. Fluids 14(6) (2002)] is extended to handle the thermal curved wall boundary for a double-population thermal lattice Boltzmann equation (TLBE). The unknown distribution population at a wall node which is necessary to fulfill streaming step is decompo...

In this paper, we use Bejan’s Constructal theory to optimize the geometry of a H-shaped cavity that intrudes into a solid conducting wall. The objective is to minimize the global thermal resistance between the solid and the cavity. Internal heat generation is distributed uniformly throughout the solid wall. The cavity surface is isothermal, while the solid wall has adiabatic conditions on the o...

A new method for the computation of flows at the micrometer scale is presented. It is based on the recently introduced minimal entropic kinetic models. Both the thermal and isothermal families of minimal models are presented, and the simplest isothermal entropic lattice Bhatnagar-Gross-Krook (ELBGK) is studied in detail in order to quantify its relevance for microflow simulations. ELBGK is equi...

The effect of chemical reaction on mixed convection heat and mass transfer in non-Newtonian fluid a long non-isothermal horizontal surface embedded in a saturated porous medium has been studied. The mixed convection regime is divided into two regions, namely, the forced convection dominated regime and the free convection dominated regime. The two solutions are matched. Numerical calculations ar...