International Journal of Numerical Methods for Heat & Fluid Flow: Volume 28 Issue 1

Guest editorial

Ioan Pop, Jan Taler, Abdulmajeed Mohamad, Pawel Oclon

Hybrid atomistic-continuum multiscale method for fluid flow with density variation in microchannels

Van Huyen Vu, Benoît Trouette, Quy Dong TO, Eric Chénier

This paper aims to extend the hybrid atomistic-continuum multiscale method developed by Vu et al. (2016) to study the gas flow problems in long microchannels involving density…

Application of cellular automata and Lattice Boltzmann methods for modelling of additive layer manufacturing

Dmytro Svyetlichnyy, Michal Krzyzanowski, Robert Straka, Lukasz Lach, W. Mark Rainforth

The holistic numerical model based on cellular automata (CA) and lattice Boltzmann method (LBM) are being developed as part of an integrated modelling approach applied to study…

Effectiveness in incorporating Brownian and thermophoresis effects in modelling convective flow of water-Al2O3 nanoparticles

M. Ziad Saghir, Abdulmajeed Mohamed

Nanofluids are widely used in heat transfer phenomena owing to the higher rate of heat removal as compared to their base fluids. Nanoparticle’s motion in nanofluids is analysed by…

A theoretical, numerical and experimental verification of the Reynolds thermal transpiration law

Paweł Ziółkowski, Janusz Badur

The purpose of this paper is the theoretical presentation of tensorial formulation with surface mobility forces and numerical verification of Reynolds thermal transpiration law in…

Numerical modeling transient response of tubular cross flow heat exchanger

Dawid Taler, Anna Korzen

The paper aims to present the mathematical modeling of plate fin and tube heat exchanger at small Reynolds numbers on the water side. The Reynolds number of the water flowing…

Indirect measurement of the flow rate based upon a solution of an inverse coefficient problem

Kazimierz Rup, Lukasz Malinowski, Piotr Sarna

The purpose of this paper is to extend the possibilities of using the earlier developed indirect method of fluid flow rate measurement in circular pipes to the square-section…

Numerical study of air convection in a rectangular enclosure with two isothermal blocks and oscillating bottom wall temperature

Kalidasan K., R. Velkennedy, Jan Taler, Dawid Taler, Pawel Oclon, Rajesh Kanna P.

This study aims to perform a numerical study of air convection in a rectangular enclosure with two isothermal blocks and oscillating bottom wall temperature under laminar flow…

Bubble flow simulations using the intersection marker (ISM) interface tracking method

Mark Ho, Guan Heng Yeoh, John Arthur Reizes, Victoria Timchenko

Interface distinct two-phase computational fluid dynamics (CFD) simulations require accurate tracking in surface curvature, surface area and volume fraction data to precisely…

Identification of three-dimensional transient temperature fields in thick-walled elements using the inverse method

Magdalena Jaremkiewicz

The purpose of this paper is to propose a method of determining the transient temperature of the inner surface of thick-walled elements. The method can be used to determine…

Semi-empirical heat transfer correlations for turbulent tube flow of liquid metals

Dawid Taler

The purpose of this paper is to develop new semi-empirical heat transfer correlations for turbulent flow of liquid metals in the tubes, and then to compare these correlations with…

An efficient solving method for nonlinear convection diffusion equation

Xia Cui, GuangWei Yuan, ZhiJun Shen

This paper aims to provide a well-behaved nonlinear scheme and accelerating iteration for the nonlinear convection diffusion equation with fundamental properties illustrated.

Small to large scale mixed turbulent convection: buildings application

Souad Morsli, Mustapha Boussoufi, Amina Sabeur, Mohammed El Ganaoui, Rachid Bennacer

The use of natural ventilation by large openings to maintain thermal comfort conditions in the premises is a concept that is perfectly integrated into the traditional architecture…

The solution of a two-dimensional inverse heat transfer problem using two methods: The Trefftz method and the Beck method

Beata Maciejewska, Kinga Strak, Magdalena Piasecka

This paper aims to focus on flow boiling heat transfer in an asymmetrically heated minichannel. Two-dimensional inverse heat transfer problem was solved using the Trefftz and Beck…

Effect of viscous dissipation on forced convection for laminar flow through a straight regular polygonal duct using BEM method

Tomasz Janusz Teleszewski, Slawomir Adam Sorko

The purpose of this paper is to investigate the effect of the viscous dissipation of laminar flow through a straight regular polygonal duct on forced convection with constant…

Application of discrete Fourier transform to inverse heat conduction problem regularization

Andrzej Frąckowiak, Michał Ciałkowski

This paper aims to present the Cauchy problem for the Laplace’s equation for profiles of gas turbine blades with one and three cooling channels. The distribution of heat transfer…

Fuzzy logic and bed-to-wall heat transfer in a large-scale CFBC

Jaroslaw Krzywanski, Marta Wesolowska, Artur Blaszczuk, Anna Majchrzak, Maciej Komorowski, Wojciech Nowak

The purpose of this paper is to first present the key features of the fuzzy logic (FL) approach as a cost-effective technique in simulations of complex systems and then…