Results 61 to 70 of about 9,644,120 (250)
Numerical Study of Laminar Forced Convection of Nanofluid in a New Microchannel Heat Sink
Journal of Mechanical Engineering, 2021 The heat transfer and pressure drop in a microchannel heat sink with 02 mixing chambers with inclined walls were numerically studied. The transport equations have been resolved by the finite volume method using ANSYS Fluent software. The operating fluids
Bourhane Bouhabel, Yassine Kabar
doaj +1 more source
TH Wildau Engineering and Natural Sciences Proceedings, 2021 Vegetation cover provides shading and protects the soil beneath them from warming. Vegetation can be used as passive cooling technique that reduces the thermal load of a building. A numerical study has been carried out on laminar double-diffusive mixed
Hodo-Abalo Samah +4 more
doaj +1 more source
What Exactly is the Nusselt Number in Convective Heat Transfer Problems and are There Alternatives?
Entropy, 2016 The often used Nusselt number is critically questioned with respect to its physical meaning. Based on a rigorous dimensional analysis, alternative assessment numbers are found that in a systematic way separately account for the quantitative and ...
H. Herwig
semanticscholar +1 more source
Modeling mixing convection analysis of discrete partially filled porous channel for optimum design
Alexandria Engineering Journal, 2015 Mixing convection flow inside a convergent horizontal channel partially filled with porous material and a clear channel are investigated numerically in the present study.
Mohamed G. Ghorab
doaj +1 more source
Experimental Estimation of Temporal and Spatial Resolution of Coefficient of Heat Transfer in a Channel Using Inverse Heat Transfer Method [PDF]
, 2019 In this research, a novel method to investigation the transient heat transfer coefficient in a channel is suggested experimentally, in which the water flow, itself, is considered both just liquid phase and liquid-vapor phase. The experiments were designed to predict the temporal and spatial resolution of Nusselt number.
arxiv +1 more source
Bounds for rotating convection at infinite Prandtl number from semidefinite programs [PDF]
arXiv, 2022 Bounds for the poloidal and toroidal kinetic energies and the heat transport are computed numerically for rotating convection at infinite Prandtl number with both no slip and stress free boundaries. The constraints invoked in this computation are linear or quadratic in the problem variables and lead to the formulation of a semidefinite program.
arxiv
Use of Fin Equation to Calculate Nusselt Numbers for Rotating Discs [PDF]
Volume 5C: Heat Transfer, 2015 Conduction in thin discs can be modelled using the fin equation, and there are analytical solutions of this equation for a circular disc with a constant heat-transfer coefficient. However, convection (particularly free convection) in rotating-disc systems is a conjugate problem: the heat transfer in the fluid and the solid are coupled, and the relative
Tang, Hui +2 more
openaire +2 more sources
, 2016 This paper focuses on a wall-resolved Large Eddy Simulation (LES) of an isothermal round submerged air jet impinging on a heated flat plate, at a Reynolds number of 23 000 (based on the nozzle diameter and the bulk velocity at the nozzle outlet) and for ...
P. Aillaud +3 more
semanticscholar +1 more source
OPTIMAL NETWORK ARCHITECTURE FOR NUSSELT NUMBER AND FRICTION FACTOR
EJOVOC Electronic Journal of Vocational Colleges, 2015 This present research uses artifical neural networks (ANNs) to determine Nusselt numbers and friction factors for nine different baffle plate inserted tubes. MATLAB toolbox was used to search better network configuration prediction by using commonly used multilayer feed-forward neural networks (MLFNN) with back propagation (BP) learning algorithm with ...
openaire +4 more sources
Radial boundary layer structure and Nusselt number in Rayleigh–Bénard convection [PDF]
Journal of Fluid Mechanics, 2010 Results from direct numerical simulation (DNS) for three-dimensional Rayleigh–Bénard convection in a cylindrical cell of aspect ratio 1/2 and Prandtl number Pr=0.7 are presented. They span five decades of Rayleigh number Ra from 2 × 106 to 2 × 1011. The results are in good agreement with the experimental data of Niemela et al. (Nature, vol.
Stevens, R. J. A. M +2 more
openaire +7 more sources