Results 41 to 50 of about 49,718 (278)

"Ultimate state" of two-dimensional Rayleigh-Benard convection between free-slip fixed temperature boundaries

open access: yes, 2011
Rigorous upper limits on the vertical heat transport in two dimensional Rayleigh-Benard convection between stress-free isothermal boundaries are derived from the Boussinesq approximation of the Navier-Stokes equations. The Nusselt number Nu is bounded in
Charles R. Doering   +2 more
core   +1 more source

Transition of thermally induced flow in a square cavity using Spectral Method [PDF]

open access: yesE3S Web of Conferences
This study presents a novel mesh-free method for simulating natural convection in a square cavity filled with Newtonian fluid. The proposed algorithm integrates mesh-free Spectral methods with the Moving Collocation Element (MCOE) technique and employs a
Laasl Boutayna   +4 more
doaj   +1 more source

Numerical investigation of nanofluid flow and heat transfer over a backward-facing step

open access: yesEngineering and Applied Science Research, 2020
In this research, the forced convection heat transfer of a nanofluid in a channel with a backward- facing step is studied by adopting the finite volume technique. The effect of nanoparticles is considered by employing the single-phase model.
Pedram Pournaderi, Milad Aram
doaj   +1 more source

Analysis of the Nusselt number in pulsating pipe flow

open access: yesInternational Journal of Heat and Mass Transfer, 1997
기계공학전공
GUO, ZHIXIONG   +1 more
openaire   +3 more sources

Semiconvection: numerical simulations [PDF]

open access: yes, 2013
A grid of numerical simulations of double-diffusive convection is presented for the astrophysical case where viscosity (Prandtl number Pr) and solute diffusivity (Lewis number Le) are much smaller than the thermal diffusivity.
Spruit, H., Zaussinger, F.
core   +2 more sources

Empirical study for Nusselt number optimization for the flow using ANOVA and Taguchi method

open access: yesCase Studies in Thermal Engineering, 2023
ANOVA and Taguchi is an optimization tool used to find the optimal combination to achieve the highest heat transmission rate for a Casson-Carreau nanofluid flow over a curved surface.
B. Nagaraja   +5 more
doaj   +1 more source

INVESTIGATION OF CONVECTION HEAT TRANSFER FOR HIGH INTEGRAL FINNED TUBE HEAT EXCHANGER [PDF]

open access: yesJournal of Engineering and Sustainable Development, 2019
The numerical investigation has been performed in this work to evaluate the performance of a triangular finned tube heat exchanger. In numerical work, the effect of space (2.5, 3 and 3.5 mm) distance between every two finned shaped and the volumetric ...
Muna Sabah Kassim, Hadeer Sattar Gaber
doaj   +2 more sources

Simultaneously Boosting Freshwater Productivity and Antifouling Efficacy of Membrane Distillation Through In Situ Micro‐Bubble Generation

open access: yesAdvanced Science, EarlyView.
A superhydrophobic functional coating composed of γ‐MnO2 and perfluorodecyltrichlorosilane (FDTS) is capable of decomposing H2O2 and generating in situ micro‐bubbles on the membrane surface. The dynamic bubbles intensify the turbulence, enhancing the heat and mass transfer during membrane distillation (MD).
Zhongsheng Li   +4 more
wiley   +1 more source

Numerical Study of Laminar Forced Convection of Nanofluid in a New Microchannel Heat Sink

open access: yesJournal 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

Mechanistic Modeling of Continuous Lyophilization for Biopharmaceutical Manufacturing

open access: yesAdvanced Science, EarlyView.
This article presents the first mechanistic model for continuous lyophilization (aka freeze drying). The model accurately describes the key phenomena and critical process parameters in continuous lyophilization, which can be used for process design, optimization, and control. Results from this work can drive the transition of (bio)pharmaceutical freeze
Prakitr Srisuma   +2 more
wiley   +1 more source

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