International Journal of Numerical Methods for Heat & Fluid Flow: Volume 29 Issue 6

Unsteady natural convection in a partially porous cavity having a heat-generating source using local thermal non-equilibrium model

Marina S. Astanina, Mikhail Sheremet, C. Jawali Umavathi

The purpose of this study is a numerical analysis of transient natural convection in a square partially porous cavity with a heat-generating and heat-conducting element using the…

Effect of nanofluids on heat transfer and cooling system of the photovoltaic/thermal performance

Rehena Nasrin, Md. Hasanuzzaman, N.A. Rahim

Effective cooling is one of the challenges for photovoltaic thermal (PVT) systems to maintain the PV operating temperature. One of the best ways to enhance rate of heat transfer…

Simulations of flame propagation during the ignition process in an annular multiple-injector combustor

Dongmei Zhao, Yifan Xia, Haiwen Ge, Qizhao Lin, Jianfeng Zou, Gaofeng Wang

Ignition process is a critical issue in combustion systems. It is particularly important for reliability and safety prospects of aero-engine. This paper aims to numerically…

SLAC – a semi-Lagrangian artificial compressibility solver for steady-state incompressible flows

Mohammad Mortezazadeh, Liangzhu (Leon) Wang

The purpose of this paper is the development of a new density-based (DB) semi-Lagrangian method to speed up the conventional pressure-based (PB) semi-Lagrangian methods.

Natural convection of non-Newtonian nanofluid flow between two vertical parallel plates

Uddhaba Biswal, Snehashish Chakraverty, Bata Krushna Ojha

The purpose of this paper is to carry out a detailed investigation to study the natural convection of a non-Newtonian nanofluid flow between two vertical parallel plates. In this…

Numerical study and POD snapshot analysis of flow characteristics for pulsating turbulent opposing jets

Morteza H. Bagheri, Kazem Esmailpour, Seyyed Mostafa Hoseinalipour, Arun S. Mujumdar

The purpose of this study is to investigate the coherent structures of pulsed opposing jets by large eddy simulation (LES) model and proper orthogonal decomposition (POD) snapshot…

Physical aspects of Darcy-Forchheimer bidirectional flow in carbon nanotubes (SWCNTs and MWCNTs)

Muhammad Ijaz Khan, Madiha Rashid, Tasawar Hayat, Niaz B. Khan, Ahmed Alsaedi

This paper aims to examine the three-dimensional (3D) flow of carbon nanotubes (CNTs) due to bidirectional nonlinearly stretching surface by considering porous medium…

Entropy generation in radiative flow of Ree-Eyring fluid due to due rotating disks

Muhammad Ijaz Khan, Sohail Ahmad Khan, Tasawar Hayat, Muhammad Faisal Javed, Ahmed Alsaedi

This study aims to examine the flow characteristics of Ree–Eyring fluid between two rotating disks. The characteristics of heat transfer are discussed in presence of viscous…

Numerical optimization methods comparison based on the CFD conduction-convection heat transfer case

Przemyslaw Mlynarczyk

In some types of industries, the best possible design, in terms of thermal and flow performance, determines the success or failure of the company. This applies, among others, to…

Two integrable third-order and fifth-order KdV equations with time-dependent coefficients: Multiple real and multiple complex soliton solutions

Abdul-Majid Wazwaz

The purpose of this paper is concerned with developing two integrable Korteweg de-Vries (KdV) equations of third- and fifth-orders; each possesses time-dependent coefficients. The…

Turbulent forced convection in a shell and tube heat exchanger equipped with novel design of wing baffles

Ahmed Youcef, Rachid Saim, Hakan F. Öztop, Mohamed Ali

This work presents a numerical study of the dynamic and thermal behavior of a turbulent flow in a shell and tube heat exchanger equipped with a new design of baffle type wing. The…

Effectiveness of improved Fourier-Fick laws in a stratified non-Newtonian fluid with variable fluid characteristics

Muhammad Waqas, Saira Naz, Tasawar Hayat, Sabir Ali Shehzad, Ahmed Alsaedi

The purpose of this paper is to introduce the concept of improved Fourier–Fick laws subjected to variable fluid characteristics. Flow analysis in the stagnation region of…

Impacts of surface roughness on mixed convection nanofluid flow with liquid hydrogen/nitrogen diffusion

Prabhugouda Mallanagouda Patil, S.H. Doddagoudar, P.S. Hiremath

The purpose of this paper is to present the surface roughness effects on mixed convection nanofluid flow with liquid hydrogen/liquid nitrogen diffusion.