Browsing by Subject "Computational fluid dynamics"
Now showing items 120 of 52

3D numerical investigation of poultry farms pollutant emissions over complex terrains
(2015)Wind mapping is of utmost importance in various environmental engineering applications concerning pollution dispersion. The available wind atlases usually provide wind data with low spatial resolution relative to pollution ... 
Abdominal Aortic Aneurysm Endovascular Repair: Profiling Postimplantation Morphometry and Hemodynamics with ImageBased Computational Fluid Dynamics
(2018)Endovascular aneurysm repair (EVAR) has disseminated rapidly as an alternative to open surgical repair for the treatment of abdominal aortic aneurysms (AAAs), because of its reduced invasiveness, low mortality, and morbidity ... 
Aeroacoustics and Artificial Neural Network Modeling of Airborne Acoustic Emissions During High Kinetic Energy Thermal Spraying
(2019)This work describes an online, nondestructive monitoring technology for thermal spray coating processes based on the airborne acoustic emissions (AAE) in the booth. First, numerical simulations were carried out to probe ... 
Analysis of airflow through experimental rural buildings: Sensitivity to turbulence models
(2007)Fullscale experimental data and computational fluid dynamics (CFD) methods are used to determine the accuracy of four different turbulence models [standard kε, kε renormalisation group (RNG), kε realisable, Reynolds ... 
Bayesian uncertainty quantification and propagation using adjoint techniques
(2014)This paper presents the Bayesian inference framework enhanced by analytical approximations for uncertainty quantification and propagation and parameter estimation. A Gaussian distribution is used to approximate the posterior ... 
Bayesian uncertainty quantification of turbulence models based on highorder adjoint
(2015)The uncertainties in the parameters of turbulence models employed in computational fluid dynamics simulations are quantified using the Bayesian inference framework and analytical approximations. The posterior distribution ... 
Blood flow and diameter effect in the navigation process of magnetic nanocarriers inside the carotid artery
(2022)Background and objective: Serious side effects are occurred during the cancer therapy. Magnetic driving of nanoparticles is a novel method for the elimination of these effects by supplying with anticancer drug or increase ... 
Buoyancyassisted mixed convection in a vertical channel with spatially periodic wall temperature
(2013)The influence of a spatially periodic temperature boundary condition on the laminar mixed convection in an upward flow between two vertical parallel plates is numerically studied. A detailed assessment is presented of the ... 
CFD simulation of heating greenhouse using a perforated polyethylene ducts
(2017)The location and the power of the heating devices determines in a large extend the flow and temperature patterns inside the greenhouse. The aim of this paper is to analyse the internal convective flows generated in a closed ... 
Comparing the effect of three transition models on the CFD predictions of a NACA0012 airfoil aerodynamics
(2016)The ability to accurately predict transition is important for flows around airfoils, especially at low Reynolds numbers. Transition from laminar to turbulent flow strongly influences the flow separation and the skin friction, ... 
Comparison of physiological and postendovascular aneurysm repair infrarenal blood flow
(2017)Endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms results in redirection of blood through the deployed endograft (EG). Even though EVAR is clinically effective, the absolute flow restoration is not warranted. ... 
Computation of the effective area and associated uncertainties of nonrotating piston gauges FPG and FRS
(2019)The effective areas of three forcebalanced piston gauges (FPGs) and two Furness Rosenberg standards (FRS) in the operating pressure range of each device varying for 1 Pa15 kPa have been accurately computed both in the ... 
Computational analysis of paramagnetic spherical Fe3O4 nanoparticles under permanent magnetic fields
(2018)The influence of permanent constant magnetic fields on the paramagnetic nanoparticles motion is analyzed in this study. The numerical model is developed in the OpenFOAM® platform and includes all major forces acting on ... 
Computational Study of the Optimum Gradient Magnetic Field for the Navigation of the Spherical Particles in the Process of Cleaning the Water from Heavy Metals
(2016)The usage of magnetic spherical nanoparticles, coated with substances and driven to targeted areas in tanks, is proposed for cleaning the water from heavy metals. In the present paper, a computational study for the estimation ... 
Direct numerical simulation of particleladen turbulent channel flows with two and fourway coupling effects: Models of terms in the Reynolds stress budgets
(2017)In the first part of this study (Dritselis 2016 Fluid Dyn. Res. 48 015507), the Reynolds stress budgets were evaluated through pointparticle direct numerical simulations (ppDNSs) for the particleladen turbulent flow in ... 
The effect of anode bed geometry on the hydraulic behaviour of PEM fuel cells
(2016)The influence of the anode bed geometry on the hydraulic behaviour of PEM fuel cells is assessed. Three basic geometrical patterns are studied, namely the interdigitated, the parallel and the serpentine ones, in their ... 
Effect of micropolar fluid properties on the hydraulic permeability of fibrous biomaterials
(2020)Background and objective: In this work, the effect of the micropolar fluid parameters on the hydraulic permeability of fibrous biomaterials comprised of square arrays of undirectional fibrils is investigated. Methods: ... 
The effect of vent configuration and insect screens on greenhouse microclimate
(2005)The influence of insect screens and vent configurations on airflow and temperature patterns in an arched plastic covered greenhouse used for cultivating tomatoes was analysed using a commercial computational fluid dynamics ... 
Environmental friendly poultry production using novel precision livestock techniques
(2015)The present economic situation in poultry production forces producers to focus on improving efficiency in order to increase their competitiveness. Among the important factors in achieving improved efficiency is the provision ... 
Experimental and Numerical Study of Turbulent Flow in Open Channels with Impermeable and Porous Bed
(2016)In order to experimentally and numerically investigate turbulent flow in an open channel with porous (vegetated) and impermeable bed 2D Particle Image Velocimetry (PIV) and a Computational Fluid Dynamical (CFD) model were ...