The present work investigates the magnetohydrodynamic (MHD) convective heat transport of hybrid nanofluids in a chamber with multiple heaters (such as hot microchips). multiple-relaxation-time (MRT) lattice Boltzmann method (LBM) and graphics processing unit (GPU) computing are used here. study is important due to its relevance real-world applications, use advanced simulation techniques, consideration nanofluids, inclusion magnetohydrodynamics, identification critical parameters influencing...

This article reports an investigation of the Soret and Dufour effects on double-diffusive natural convection Al2O3-H2O nanofluids in a U-shaped porous enclosure. Numerical problems were resolved using multiple-relaxation-time (MRT) lattice Boltzmann method (LBM). The indented part U-shape was cold, right left walls heated, while bottom upper adiabatic. experimental data-based temperature nanoparticle size-dependent correlations for Al2O3-water are used here. benchmark results thoroughly...

In this study, the combined effect of temperature (T) and pore water salinity on electrical surface conduction parameters was investigated. Two new parameters, namely, conductivity effective solid (σs) size diffuse double layer (DDL) per unit volume soil (χ), were considered in study. The tested samples included two commercially available clays four natural clay soils with diverse physico-chemical properties. also used to assess influence salinity, as well free (σFW), evolution swelling...

This study aims to numerically examine the heat transfer and entropy generation of non-Newtonian power-law nanofluids in a C-shaped cavity filled with porous media considering Brinkman-Forchheimer extended Darcy model (BFEDM). The graphics processing unit (GPU) based multiple-relaxation-time lattice Boltzmann method (MRT-LBM) was used through computing unified device architecture (CUDA) C/C++ platform. It is known fact that fluid viscosity varies shear rate nanoparticle sizes thermal...

Nanofluids have the proven capacity to significantly improve thermal efficiency of a heat exchanging system due presence conductive nanoparticles. The aim this study is simulate forced convection on non-Newtonian hybrid with nanofluid (Al2O3-TiO2-H2O) in hexagonal enclosure by Galerkin finite element method (GFEM). physical model two dimensions, containing heated cylinder embedded at center. bottom, middle left, and right walls are all considered cold (Tc), while top wall be moving,...

The atmospheric flow and dispersion of traffic exhaust were numerically studied in this work while considering a model street canyon intersection city. finite volume method (FVM)-based large-eddy simulation (LES) technique line with ANSYS Fluent have been used for pollutant modelling through the consideration boundary layer (ABL). Hexahedral elements are considered computational domain discretization order to solve problems using FVM-LES. turbulence parameters superimposed spectral...

The present research investigates the heat transfer and entropy generation of a non-Newtonian power-law Cu-water nanofluid in square porous enclosure at representative elementary volume (REV) scale using multiple-relaxation-time lattice Boltzmann method (MRT-LBM). Graphics Processing Unit (GPU) accelerated computations involved. Brinkman-Forchheimer-extended Darcy model shear rate dependent viscosity were taken into account to characterise fluid flow medium. Three types validations have been...

This study aims to consider lattice Boltzmann method (LBM)–magnetohydrodynamics (MHD) data develop equations predict the average rate of heat transfer quantitatively. The present approach considers a 2D rectangular cavity with adiabatic side walls, and bottom wall is heated while top kept cold. Rayleigh–Bénard (RB) convection was considered heat-transfer phenomenon within cavity. Hartmann (Ha) number, by varying inclination angle (θ), in developing considering input parameters, namely,...

Abstract There has been a strong interest to design and optimise thermally efficient heating cooling equipment. The conventional fluids such as oil water have limited thermal efficiency. Therefore, researchers seeking alternatives the improve efficacy of heat exchanging electronic devices nanofluid identified great option in this regard. Although is alternative, certain specifications, geometries, pertinent parameters need be thoroughly investigated for comprehensive understanding with aid...

The aim of this study is to investigate the effects temperature-dependent viscosity on natural convection flow from a vertical permeable circular cone with uniform heat flux. As part numerical computation, governing boundary layer equations are transformed into non-dimensional form. resulting nonlinear system partial differential then reduced local non-similarity which solved computationally by three different solution methodologies, namely, (i) perturbation for small transpiration parameter...

One of the most valuable and nutritionally essential agricultural commodities worldwide is milk. The European Union New Zealand are second- third-largest exporting regions milk products rely heavily on pasture-based production systems. They comparable to Australian systems investigated in this study. With projections herd decline, increased yield must be obtained from a combination animal genetics feed efficiencies. Accurate pasture biomass estimation across all seasons will improve...

In this research, a very popular alternative computational technique, the lattice Boltzmann method (LBM), has been used to simulate indoor airflow and heat transfer in model hospital ward. Different Reynolds numbers have study pattern. Boundary conditions for velocity temperature also discussed detail. Several tests conducted code validation. LBM is demonstrated through simulation forced convection inside ward with six beds two different situations: without partition partition. Changes...

The present study aims to investigate the impact of air pollutants dispersion from traffic emission under influence wind velocity and direction considering seasonal cycle in two major areas Dhaka city: namely, Tejgaon Gazipur. Carbon monoxide (CO) mass fraction has been considered as a representative element traffic-exhausted pollutants, distribution investigated five different street geometries: single regular irregular, double finally, multiple irregular streets. After grid independence...

In the present investigation airflow and heat transfer for mixed convection have been simulated a model general ward of hospital with six beds partitions using Lattice Boltzmann Method (LBM). Three different Reynolds numbers 100, 250, 350 considered. Bounce-back condition has applied at wall. Results represented in three case studies changes discussed terms streamlines isotherms. Code validation also included before going through simulation process it shows good agreement previously...

The aim of this paper is to investigate the effect pore-water salinity on electrical resistivity (ER) different compacted clay liners (CCLs) in terms its mineralogical composition. For purpose, an experimental programme was conducted where ERs kaolin-dominant CCL specimens, reconstituted using water having concentrations NaCl (0 M, 0.5 and 1.0 M), were measured. specimens tested study include pure kaolin, three kaolin-bentonite mixtures, kaolin-sand mixtures. results show that decrease as...

Heat-exchanging devices equipped with conventional thermal fluids are failing to meet the standard in terms of efficiency. The inclusion nanoparticles within a base fluid improve efficiency can be great alternative but proper understanding on interactions during heat transfer phenomena is required. This work examines between conduction and convection nanofluid water copper (Cu) particles. investigation focuses behavior nanofluid, considering impact magnetohydrodynamics (MHDs) flow over...

The aim of this study was to propose a new approach determine the liquid limit and plastic clay soils by considering electrical conductivity (EC) measurements. proposed method included incorporating parameter, F, which is ratio volumetric water contents diffuse double layer (DDL) free water. In addition, EC σ, considered as surface changes in thickness DDL (χ) were also assessed obtain corresponding equations establish connection with mineralogy, content, specific gravity final prediction....

This study proposes a new method to determine the particle size distribution (PSD) of soils by considering electrical conductivity (EC) technique. A EC probe was designed with transparent thermoplastic, commonly known as acrylic, and brass electrodes. At first, soil–water homogeneous suspension calculated at different densities obtain calibration curve each tested soil sample. During PSD analysis, particles started settle down in basement due gravity, measured time intervals, corresponding...

In this paper, a very popular alternative computational technique, the Lattice Boltzmann Method (LBM) has been used for Large-Eddy Simulation (LES) of airflow and heat transfer in general ward hospital. Different Reynolds numbers have to study pattern. LES, Smagorinsky turbulence model considered discussion conducted brief. A code validation performed comparing present results with benchmark lid-driven cavity problem are found agree well. LBM is demonstrated through simulation forced...