Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 692 for “"Computational fluid dynamics (CFD)"”.
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Computational Fluid Dynamics (cfd) Modeling of a Laboratory Scale Coal Gasifier
… The mesh for the model was developed with ICEM CFD software and the chemical and physical phenomena were modeled using the fluid flow solver ANSYS FLUENT. Mesh independence was verified. The model was validated with experimental data from several studies performed on a laboratory scale …
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Computational Fluid Dynamics (CFD) modelling of renewable energy turbine wake interactions
This thesis presents Computational Fluid Dynamics (CFD) simulations of renewable turbines akin to those used for wind, hydro, and tidal applications. The models developed took the form of actuator discs with the solution of incompressible Reynolds-Averaged Navier-Stokes equations with the k-ω SST …
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Computational fluid dynamics (CFD) and physical modelling of a metal refining process
… years, there is very little known on how the fluid dynamics associated with the mixing process affects final dross content. The aim of this research is to fully investigate the lead refining process using scientific analysis methods that help understand the mixing process and provide design …
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Investigating blast fume propagation, concentration and clearance in underground mines using computational fluid dynamics (CFD)
… in details. To achieve the above goals, the computational fluid dynamics (CFD) method is used to simulate blast fume dispersion and clearance in the underground mine.</p><p>An experiment has been successfully conducted at the Missouri S&T Experimental Mine to acquire blast data to validate …
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On the integration of Computational Fluid Dynamics (CFD) simulations with Monte Carlo (MC) radiation transport analysis
… and so this thesis develops a coupled Computational Fluid Dynamics (CFD) and Monte Carlo (MC) Radiation Transport approach to this problem. Via particulate injections, the CFD simulation defines the spatial distribution of radioactive particulates and this distribution is then employed …
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NON-DIMENSIONAL DATA-DRIVEN MODELS OF COMPUTATIONAL FLUID DYNAMICS (CFD) OF MULTI-PHASE FLOW IN ANNULUS
… flow were identified and investigated using computational fluid dynamics (CFD) tools. Based on the simulation results, the criterion of thin or thick annulus was established. In addition, two non-dimensional data-driven models were developed to describe the cavitation conditions in terms of …
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Design and Analysis of Low Reynolds Number Marine Propellers with Computational Fluid Dynamics (CFD) Transition Modeling
… techniques in Reynolds Averaged Navier-Stokes computational fluid dynamics (RANS CFD) are utilized to evaluate and design propellers operating at low Reynolds numbers. The Galilean invariant γ transition model with an extension for crossflow transition is coupled to the SSG (Speziale, Sarkar, …
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Computational fluid dynamics (CFD) modelling of critical velocity for sand transport flow regimes in multiphase pipe bends.
The production and transportation of hydrocarbon fluids in multiphase pipelines could be severely hindered by particulate solids deposit - such as the sand particles that can accompany hydrocarbon production. Knowledge of the flow characteristics of solid particles in fluids when transported in …
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Computational fluid dynamics (CFD) simulations of temperature distribution in traditional and automated dairy buildings under changing climate
… fluctuations. This study applied validated computational fluid dynamics (CFD) modeling to develop and evaluate energy-efficient ventilation and cooling strategies across three primary dairy housing systems: cross and tunnel-ventilated free-stall barns, dairy buildings equipped with automated …
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A Computational Fluid Dynamics (CFD) Analysis of the Aerodynamic Effects of the Seams on a Two-Dimensional Representation of a Soccer Ball
… or full flow paths in trajectory analyses. Computational efforts have been too assumptive in flow conditions, such as a fully turbulent flow field, which has not yielded accurate representations of the flow phenomenon. This study investigates the aerodynamic effects of the seam on a …
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Lagrangian studies of turbulent mixing in a vessel agitated by a rushron turbine: positron emission particle tracking (PEPT) and computational fluid dynamics (CFD)
… processes is required. In cases where the fluid is not completely transparent, traditional optical laser based techniques are ineffective. One of the most promising techniques to study opaque systems is based on the detection of a tracer that emits gamma rays. Positron Emission Particle …
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Meta-modeling and Optimization of Computational Fluid Dynamics (CFD) analysis in thermal comfort for energy-efficient Chilled Beams-based Heating, Ventilation and Air-Conditioning (HVAC) systems
With the rapid rise in the use of air conditioning systems and technological advancements, there is an ever-increasing need for optimizing the HVAC systems for energy efficiency while maintaining adequate occupant thermal comfort. HVAC systems in buildings alone contribute to almost 15% of the …
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Developing Co-current and Counter-current Spray Drying Computational Fluid Dynamics (CFD) Simulation Studies to Predict the Quality of Microencapsulated Fish Oil with Egg White Hydrolysates Powders
… by spray drying. Spray drying modeling using computational tools is essential to engineer new food powders and to minimize and thermal degradation of bioactives. The first chapter of this work discusses the optimization of an enzymatic process in terms of reaction temperature, pH, …
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Interaction between turbulent flow and saturated porous media
… porous media has been investigated using computational fluid dynamics (CFD) simulations, flow visualisation experiments and laser Doppler velocimetry (LDV) measurements.
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Using the FLUENT computational fluid dynamics code to model the NACOK corrosion test
As a part of advancing nuclear technology, computational fluid dynamics (CFD) analysis offers safer and lower-cost results relative to experimental work. Its use as a safety analysis tool is gaining much broader acceptance due to increasing experimental verification. FLUENT is a Computational Fluid …
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A computational study of a lifting wing in close proximity to a moving ground plane
… Fluent® and Gambit® were used to develop a 3D Computational Fluid Dynamics (CFD) model to determine the aerodynamic characteristics of a DHMTU lifting wing flying in ground effect. In particular, the performance of the wing in the presence of waves was of interest. But first a reliable …
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Experimental investigations of natural circulation in a separate-and-mixed effects test facility mimicking prismatic modular reactor (PMR) core
… after the loss of flow accidents (LOFA). Several computational studies have addressed such phenomena, however, validation of Computational Fluid Dynamics (CFD) is needed by providing high-quality data obtained from separate test facilities designed with reference to the corresponding reference …
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POMA : a zonal model for airflow and temperature distribution analysis
… is an intermediate model between multizone and Computational Fluid Dynamics (CFD) model. Compared to multizone models, zonal models can provide engineers with an estimated view of airflow and temperature distribution within a room. which cannot be predicted by multizone models. Zonal models have …
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Numerical simulation of human breathing and particle transport through a CT-based pulmonary airway geometry
… than a billion people worldwide. In recent years computational fluid dynamics (CFD) has been established as a paramount tool for studying treatments of respiratory illnesses. This work investigates physiologically appropriate, lobar-specific boundary conditions for numerical simulation of steady …
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