Local Nusselt number evaluation in the case of jet impingement [PDF]
Journal of Physics: Conference Series, 2018 Jet impingement still is one of demanding cases regarding computational fluid dynamics, due to its highly turbulent behaviour, with occurrence of turbulent-laminar transition. Even recently developed methods exhibit some drawbacks - RANS based simulations lack accuracy, LES and DNS based ones require too much computational time.
Tomasz Kura +3 more
openalex +5 more sources
Convectively driven shear and decreased heat flux [PDF]
, 2014 We report on direct numerical simulations of two-dimensional, horizontally periodic Rayleigh-B\'enard convection, focusing on its ability to drive large-scale horizontal flow that is vertically sheared.
Flierl, Glenn R. +3 more
core +1 more source
Case Studies in Thermal Engineering, 2021 A numerical investigation is conducted to study the heat transfer characteristics of laminar flow in three-dimensional rectangular microchannels with aspect ratios of 0.1–1 and Reynolds numbers of 5–400.
Hao Ma +3 more
doaj +1 more source
Radial boundary layer structure and Nusselt number in Rayleigh-Benard convection [PDF]
, 2009 Results from direct numerical simulations for three dimensional Rayleigh-Benard convection in a cylindrical cell of aspect ratio 1/2 and Pr=0.7 are presented. They span five decades of Ra from $2\times 10^6$ to $2 \times10^{11}$.
Lohse, Detlef +2 more
core +4 more sources
Effects of viscous dissipation and boundary conditions on forced convection in a channel occupied by a saturated porous medium [PDF]
, 2007 Forced convection with viscous dissipation in a parallel plate channel filled by a saturated porous medium is investigated numerically. Three different viscous dissipation models are examined.
A. Bejan +35 more
core +2 more sources
Heat Transfer under Double Turbulent Pulsating Jets Impinging on a Flat Surface [PDF]
Journal of Heat and Mass Transfer Research, 2017 In this study, the numerical analysis of turbulent flow and heat transfer of double pulsating impinging jets on a flat surface has been investigated. The unsteady two-dimensional numerical solution for two similar and dissimilar jets was performed using ...
Morteza Ataei +3 more
doaj +1 more source
Correlations for Convective Laminar Heat Transfer of Carreau Fluid in Straight Tube Flow
Energies, 2022 Correlations for the Nusselt number for the fully-developed laminar flow of Carreau fluids through circular pipe subject to a uniform heat flux have been sought.
Sun Kyoung Kim
doaj +1 more source
Experimental investigation of thermal performance in a rectangular channel using compound structure
Journal of Mechanical Engineering and Sciences, 2021 An experimental study was conducted to measurethe heat transfer and pressure drop in a rectangular channel emphasizing a compound structure toimprove the cooling performance of gas turbine blades.
P. S. Patil, K.K. Dhande
doaj
Generation of entropy and forced convection of heat in a conduit partially filled with porous media- Local thermal non-equilibrium and exothermicity effects applied thermal engineering [PDF]
, 2016 The performance of a two-dimensional, axisymmetric channel with porous inserts attached to the walls is analyzed from the perspective of the first and second laws of thermodynamics.
Karimi, Nader +3 more
core +1 more source
Nusselt number scaling in tokamak plasma turbulence [PDF]
Physics of Plasmas, 2005 Anomalous heat transport caused by ion temperature gradient (ITG) driven turbulence in tokamak plasmas is evaluated from numerical simulations of the two-dimensional (2D) partial-differential equations of the ITG model and of a reduced 1D version derived from a quasilinear approximation.
Takeda, K. +3 more
openaire +3 more sources