Browsing by Subject "Computational fluid dynamics"
Now showing items 1-20 of 20
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A CFD- RSM study of cuttings transport in non-Newtonian drilling fluids: Impact of operational parameters
( Elsevier B.V. , 2022 , Article)Cuttings removal out of the wellbore represents a real barrier for successful drilling operations. The performance of hole cleaning is determined by several factors. The current article provides a theoretical study of the ... -
Advanced blood flow assessment in Zebrafish via experimental digital particle image velocimetry and computational fluid dynamics modeling
( Elsevier , 2020 , Article)Over the past few decades, Zebrafish has become a widely used vertebrate model for cardiovascular research. Easy genetic manipulation, low cost, high fecundity, embryonic transparency, and ability to survive in the early ... -
Analysis of partial electrocoalescence by Level-Set and finite element methods
( Institution of Chemical Engineers , 2016 , Article)The coalescence of a water drop in a dieletric oil phase at a water layer interface in the presence of an electric field is simulated by solving the Navier Stokes and charge conservation equations with the finite element ... -
Analysis of Partial Electrocoalescence by Level-Set and Finite Element Methods
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)The coalescence of a water drop in a dieletric oil phase at a water layer interface in the presence of an electric field is simulated by solving the Navier-Stokes and charge conservation equations with the finite element ... -
Assessment of calcified aortic valve leaflet deformations and blood flow dynamics using fluid-structure interaction modeling
( Elsevier , 2017 , Article)Aortic valve diseases are among the most common cardiovascular defects. Since a non-functioning valve results in disturbed blood flow conditions, the diagnosis of such defects is based on identification of stenosis via ... -
Assessment of calcified aortic valve leaflet deformations and blood flow dynamics using fluid-structure interaction modeling
( Elsevier , 2017 , Article)Aortic valve diseases are among the most common cardiovascular defects. Since a non-functioning valve results in disturbed blood flow conditions, the diagnosis of such defects is based on identification of stenosis via ... -
CFD analysis of turbulent flow of power-law fluid in a partially blocked eccentric annulus
( MDPI AG , 2021 , Article)This study focuses on analyzing the turbulent flow of drilling fluid in inclined wells using the Computational Fluid Dynamics (CFD) technique. The analysis is performed considering an annulus with a fixed eccentricity of ... -
CFD and statistical approach to optimize the average air velocity and air volume fraction in an inert-particles spouted-bed reactor (IPSBR) system
( Elsevier Ltd , 2021 , Article)Inert-particles spouted bed reactor (IPSBR) is characterized by intense mixing generated by the circular motion of the inert particles. The operating parameters play an important role in the performance of the IPSBR system, ... -
CFD modeling of particle settling in drilling fluids: Impact of fluid rheology and particle characteristics
( Elsevier B.V. , 2021 , Article)The settling of drilling cuttings is important for the drilling and clean-out operations. The current article provides a Computational Fluid Dynamics (CFD) modeling study of particle settling behavior during the drilling ... -
Characterization of disturbed hemodynamics due to stenosed aortic jets with a Lagrangian Coherent structures technique
( JAFM , 2018 , Article)Isfahan University of Technology. The aortic valve is located at left ventricular outlet and is exposed to the highest pressure in the cardiovascular system. Problems associated with the valve leaflet movement can cause ... -
Computational Investigation of the Effect of Wall Thickness on Rupture Risk in Abdominal Aortic Aneurysms
( JAFM , 2020 , Article)Cardiovascular disorders are among the most important causes of sudden death and adult disability worldwide. Abdominal aortic aneurysm (AAA) is a critical clinical condition where the aorta dilates beyond 50% of its normal ... -
Early gas kick detection in vertical wells via transient multiphase flow modelling: A review
( Elsevier B.V. , 2020 , Article Review)Gas influx from reservoir into the wellbore during drilling, tripping, or other operations, is a hazard. In the early stages, the influx may be nearly undetectable, but the kick can rapidly change from a seemingly steady ... -
Effect of left atrial ligation-driven altered inflow hemodynamics on embryonic heart development: clues for prenatal progression of hypoplastic left heart syndrome.
( Springer , 2021 , Article)Congenital heart defects (CHDs) are abnormalities in the heart structure present at birth. One important condition is hypoplastic left heart syndrome (HLHS) where severely underdeveloped left ventricle (LV) cannot support ... -
Investigation of the effect of anticoagulant usage in the flow diverter stent treatment of the patient-specific cerebral aneurysm using the Lagrangian coherent structures
( Elsevier , 2021 , Article)Anticoagulants are prescribed to the flow diverter treated patients to diminish the risk of embolism in the arteries. In the present study, digital subtraction angiography images of a 49-year-old female patient with a left ... -
Numerical investigation of rotating stall characteristics and active stall control in centrifugal compressors
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)This paper focuses on providing better view for the understanding of rotating stall phenomenon in centrifugal compressors by using numerical simulations and presents a study of the role of air injection method in delaying ... -
Numerical simulation and control of rotating stall in a transonic centrifugal compressor
( Web Portal ASME (American Society of Mechanical Engineers) , 2014 , Conference Paper)This study presents a numerical simulation of precursors and characteristics of rotating stall in a centrifugal compressor with vaned diffuser. The aim is to further understand the causes of stall inception, characteristics ... -
Numerical simulation of stall development into surge and stall control using air injection in centrifugal compressors
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)This study presents a numerical simulation of the formation of rotating stall and the initiation of surge in order to study the connection between stall and surge in centrifugal compressors. Also, the current paper introduces ... -
Passive pre-cooling potential for reducing building air-conditioning loads in hot climates
( American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE) , 2014 , Conference Paper)A major source of energy consumption in the building sector is the extensive use of Heating, Ventilation and Air-Conditioning (HVAC) systems to meet the rising demands for indoor comfort. Advancements in reducing cooling ... -
Pore-scale simulation of fine particles migration in porous media using coupled CFD-DEM
( Elsevier , 2022 , Article)Transport of fine particles in porous media has attracted a considerable interest over the past several decades given its importance to many industrial and natural processes. In order to control fine particles transport ... -
Transient 3D simulations of turbulent premixed flames of gas-to-liquid (GTL) fuel in a fan-stirred combustion vessel
( Elsevier , 2021 , Article)This work aims to conduct turbulent flame studies of GTL fuel and 50/50 diesel-GTLblend and compare them to diesel under a wide range of equivalence ratio (0.7 < Ф < 1.3) and turbulence intensities (0.5 m/s < u′ < 3.0 m/s). ...