... and plate-type heat exchanger in which the Al₂O₃/water nanofluid was used as working fluid to heat the domestic water. In the numerical part of the study, a commercial computational fluid dynamic code has been used to model heat rate and thermal efficiency of the heat exchanger used...

...Dmytro Svyetlichnyy; Michal Krzyzanowski; Robert Straka; Lukasz Lach; W. Mark Rainforth Purpose 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 the interaction...

.... The Takagi–Sugeno inference engine and the weighted average defuzzification methods are applied to determine the fuzzy and crisp output value, respectively. Findings The performed FL model allows predicting the bed-to-wall heat transfer coefficient in a large-scale 670 t/h circulating fluidized bed (CFB...

...Attila Diószegi; Éva Diószegi; Judit Tóth; József Tamás Svidró Purpose – The purpose of this paper is to obtain a finite difference method (FDM) solution using control volume for heat transport by conduction and the heat absorption by the enthalpy model in the sand mixture used in casting...

... – Different from other simplified solution techniques, the proposed method relies on few parameters that retain physical meaning and applies also to complex rotor configurations. i=specific enthalpy (J kg−1) © Emerald Group Publishing Limited 2014 Modelling Heat and mass transfer...

... statistical modeling using a low Reynolds number second‐order full stress transport closure (RSM model). Findings It was found that the level of radial velocity increases with the aspect ratio near to the axis of rotation but this phenomenon is reversed far from this zone; the level of tangential velocity...

...Hong Wang; Georgi Djambazov; Koulis Pericleous Purpose The purpose of this paper is to describe how a 3D/1D transient heat transfer model has been developed for getting accurate thermal boundary conditions when investigating the heat transfer in the TiAl castings and also for reducing...

... upwinding method and the effect of the subgrid model. Originality/value This paper presents an original research on self‐adaptive upwinding scheme and the effect of the subgrid model on a compressible turbulent free jet. Flow Simulation Modelling Eddy currents Large eddy simulations Self...

...X. Li; N. Massarotti; P. Nithiarasu; S.S. Feng; T. Kim; T.J. Lu Purpose The purpose of this paper is to present a porous medium model for forced air convection in pin/plate‐fin heat sinks subjected to non‐uniform heating of a hot gas impinging jet. Parametric studies are performed to provide...

... s=the surface length (m) © Emerald Group Publishing Limited 2012 Transonic turbine Transonic flow LES Heat transfer Shock Turbulence modeling Modelling Flow Turbines c=chord (m) c_ax=axial chord distance (m...

...Vedat Suat Erturk; Ahmet Yıldırım; Shaher Momanic; Yasir Khan Purpose The purpose of this paper is to propose an approximate method for solving a fractional population growth model in a closed system. The fractional derivatives are described in the Caputo sense. Design/methodology/approach...

...Ignacijo Biluš; Andrej Predin Purpose The purpose of the paper is numerical simulation and experimental analysis of a cavitation operating regime in a centrifugal water pump. The main goal is to extend the mathematical model to be able to predict the phenomena where thermodynamic process...

...Mehdi Dehghan; Fatemeh Shakeri Purpose Multi‐point boundary value problems have important roles in the modelling of various problems in physics and engineering. This paper aims to present the solution of ordinary differential equations with multi‐point boundary value conditions by means of a semi...

...Anna‐Lena Ljung; T. Staffan Lundström; Kent Tano Purpose The purpose of this paper is to numerically model convective drying of a two‐dimensional iron ore pellet subjected to turbulent flow. Design/methodology/approach Simulations of the iron ore pellet drying process are carried out...

.... Validation of the model is performed by investigating the effects of spatial and angular discretizations and extinction coefficient on the solution. The error analysis and the order of convergence of the scheme are also reported. Design/methodology/approach LB scheme is derived from the radiative...

...Mehdi Dehghan; Mehdi Tatari; Asma Azizi Purpose The purpose of this paper is to consider the well‐known Falkner‐Skan equation. This equation appears in the modelling of various phenomena in physics and engineering. Design/methodology/approach The He's variational iteration method which...

...J.D. Parisse; M. Sentis; D.E. Zeitoun Purpose The aim of this paper is to develop and validate a model and a numerical code describing the laser matter interaction and also laser ablation. The laser wavelength is 193 nm and the pulse duration is several nanoseconds. Design/methodology/approach...

...Nicola Massarotti; Perumal Nithiarasu; Emad Samadiani; Yogendra Joshi Purpose The purpose of this paper is to review the available reduced order modeling approaches in the literature for predicting the flow and specially temperature fields inside data centers in terms of the involved design...

...Nicola Massarotti; Perumal Nithiarasu; Dimitris Drikakis; Nikolaos Asproulis Purpose The purpose of this paper is to present different approaches for applying macroscopic boundary conditions in hybrid multiscale modelling. Design/methodology/approach Molecular dynamics (MD) was employed...

...Nicola Massarotti; Perumal Nithiarasu; Ramon Codina; Javier Principe; Matías Ávila Purpose The purpose of this paper is to describe a variational multiscale finite element approximation for the incompressible Navier‐Stokes equations using the Boussinesq approximation to model thermal coupling...