International Journal of Numerical Methods for Heat & Fluid Flow: Volume 33 Issue 1

Extension of the boundary integral method for different boundary conditions in steady-state Stokes flows

Sandipan Kumar Das

The boundary integral method (BIM) provides unparalleled computational efficiency for solving problems wherever it is applicable. For Stokes flows, the BIM in its current form can…

Evaluation of Fay and Riddell formula under hypersonic flight conditions

Sanghoon Lee, Yosheph Yang, Jae Gang Kim

The Fay and Riddell (F–R) formula is an empirical equation for estimating the stagnation-point heat flux on noncatalytic and fully catalytic surfaces, based on an assumption of…

Tessellation-based modeling and flow simulation of pulmonary acinus with alveolar pore

Yongjun Jin, Haihang Cui, Li Chen, Kai Sun, Haiguo Yin, Zhe Liu

This study aims to perform flow simulations inside the acinus with fine alveolar pores (Kohn pores) using hexagonal cells and bottom-up geometric modeling, which enabled the…

Entropy generation minimization of Ag-Fe_3O_4/water-ethylene glycol squeezed hybrid nanofluid flow between parallel disks

Rashmi Agrawal, Pradeep Kaswan

This paper aims to examine the squeezing flow of hybrid nanofluid within the two parallel disks. The 50:50% water–ethylene glycol mixture is used as a base fluid to prepare…

Natural convection process endorsed in coaxial duct with Soret/Dufour effect

Syed Saqib Shah, Hakan F. Öztop, Rizwan Ul-Haq, Nidal Abu-Hamdeh

The purpose of this paper is to analyse the buoyancy flow, mass and heat transfer in coaxial duct under Soret and Dufour effect. The combined effects of the thermal-diffusion and…

The aerodynamic effects of blade pitch angle on small horizontal axis wind turbines

Mehmet Numan Kaya, Oguz Uzol, Derek Ingham, Faruk Köse, Riza Buyukzeren

The purpose of this paper is to thoroughly investigate the aerodynamic effects of blade pitch angle on small scaled horizontal axis wind turbines (HAWTs) using computational fluid…

Heat transmission in Darcy-Forchheimer flow of Sutterby nanofluid containing gyrotactic microorganisms

Ambreen A. Khan, Alina Arshad, R. Ellahi, Sadiq M. Sait

This paper aims to deal with the heat transmission of Sutterby fluid-containing gyrotactic microorganism by incorporating non-Darcy resistance law. The mathematical modeling is…

Numerical simulation of fluid dynamic performance of turbulent flow over Hunter turbine with variable angle of blades

Mahdi Nazarieh, Hamed Kariman, Siamak Hoseinzadeh

This study aims to simulate Hunter turbine in Computer Forensic Examiner (CFX) environment dynamically. For this purpose, the turbine is designed in desired dimensions and…

Analysis of conjugate heat transfer for forced convective flow through wavy minichannel

Abhijit Borah, Sumit Kumar Mehta, Sukumar Pati

The purpose of this paper is to analyze numerically forced convective conjugate heat transfer characteristics for laminar flow through a wavy minichannel.

Concerning the effect of radial thermal conductivity in a self-similar solution for rotating cone-disk systems

Igor V. Shevchuk

Thus, the purposes of this study are to study the limits of applicability of the self-similar solution to the problem of fluid flow, heat and mass transfer in conical gaps with…

Real-time estimation of the heat transfer coefficient of pitot tubes undergoing freezing

Steve B. Diniz, César C. Pacheco

The purpose of this paper is to identify freezing in pitot tubes at real-time, by means of the estimated heat transfer coefficient (HTC) at the tip of the probe. The prompt…

Computational fluid dynamics simulation and experimental investigation of a thermoelectric system for predicting influence of applied voltage and cooling water on cooling performance

Mehmet Akif Ceviz, Faraz Afshari, Burak Muratçobanoğlu, Murat Ceylan, Eyüphan Manay

The purpose of this paper is to experimentally and numerically investigate the cooling performance of the air-to-water thermoelectric cooling system under different working…

Numerical simulation of drop deformation under simple shear flow of Giesekus fluids by SPH

Zahra Moinfar, Shahed Vahabi, Mohammad Vahabi

The purpose of this study is to investigate the effects of the shear-thinning viscoelastic behavior of the surrounding matrix on droplet deformation by weakly compressible…

Lattice Boltzmann study of fluid flow and heat transfer characteristics of a heated porous elliptic cylinder: a two-domain scheme

Mohammad Sedigh Kohanpour, Gholamreza Imani

This study aims to investigate lattice Boltzmann (LB) simulation of the fluid flow and heat transfer characteristics of a heated porous elliptic cylinder in uniform flow based on…

Analysis of forced convective nanofluid flow through a wavy channel with linearly varying amplitude at the entrance

Ajit Kumar, Sumit Kumar Mehta, Sukumar Pati, László Baranyi

The purpose of this paper is to analyze the heat and momentum transfer for steady two-dimensional incompressible nanofluid flow through a wavy channel with linearly varying…

Dual solutions of unsteady two-dimensional electro-magneto-hydrodynamics (EMHD) axisymmetric stagnation-point flow of a hybrid nanofluid past a radially stretching/shrinking Riga surface with radiation effect

Najiyah Safwa Khashi’ie, Iskandar Waini, Norihan Md Arifin, Ioan Pop

This paper aims to analyse numerically the unsteady stagnation-point flow of Cu-Al₂O₃/H₂O hybrid nanofluid towards a radially shrinking Riga surface with thermal radiation.

A variational principle for a fractal nano/microelectromechanical (N/MEMS) system

Chun-Hui He

The variational principle views a complex problem in an energy way, it gives good physical understanding of an iteration method, and the variational-based numerical methods always…

Utilization of wavy porous layer, magnetic field and hybrid nanofluid with slot jet impingement on the cooling performance of conductive panel

Mohamed Ouni, Fatih Selimefendigil, Besbes Hatem, Lioua Kolsi, Mohamed Omri

The purpose of this study is to analyze the impacts of combined utilization of multi-jet impinging cooling of nanofluids with magnetic field and porous layer on the cooling…

An efficient method for transient heat conduction problems with local nonlinearities based on the quasi-superposition principle

Chuanbao Nie, Bowen Fu, Qiang Gao

This paper aims to develop an efficient numerical method for nonlinear transient heat conduction problems with local radiation boundary conditions and nonlinear heat sources.

Natural convection in a sinusoidally heated cavity filled with ferrofluid in the presence of partial variable magnetic field

Pekmen Geridonmez, Hakan Oztop

The purpose of this study is to investigate partial magnetic source (MS) effect on natural convection (NC) flow of a ferrofluid flow in a cavity with sinusoidally heated vertical…