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Showing 1 to 20 of 136 for “"CFD simulation"”.
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CFD Simulation of Chemical Looping Combustion System
… technology. Use of computational fluid dynamics (CFD) has the potential to boost the development and implementation of commercial-scale CLC units. This dissertation focuses on designing a novel semi-batch CLC unit using fluidized-bed reactors and modeling the hydrodynamics of fluidized bed …
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CFD Simulation Methodology for Ground-Coupled Ventilation System
… way to develop new designs. By using these CFD tools in GCV systems designing procedure, energy can be conserved and designs going to be improved. The main objective of this study is to find and develop a CFD modeling strategy for GCV systems. To accomplish this objective, a case study must …
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CFD simulation of the airflow through the human respiratory tract
… field through the lower airways by carrying out simulations of the airflow through the human respiratory tract. Three geometries, consisting of the ETA, CT-derived lower airway, and a combination of the two were utilized in simulations that were performed for transient breathing in addition to …
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2D CFD Simulation of a Circulation Control Inlet Guide Vane
… surface. The optimization study employed the CFD code ADPAC in conjunction with the Spalart-Allmaras turbulence model to determine the optimal jet height, trailing edge radius, and supply pressure that would meet the design criteria of the TESCOM (TESt COMpressor) rig while minimizing the mass …
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GPGPU enabled CFD simulation for fully coupled fire and evacuation modelling
… etc. Presently the time taken to run these simulations is dominated by the CFD fire model. The problem with two-way coupling is that every change requires a recalculated CFD environment and as the evacuation simulation is based on Monte Carlo methods this leads to multiple calculations to …
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CFD simulation of polarization phenomena in direct contact membrane distillation systems
… membrane. To date, computational fluid dynamics (CFD) studies of DCMD focus primarily on the challenge of temperature polarization. For high concentration brines, however, concentration polarization is another major challenge that reduces system efficiency and leads to mineral scaling. Temperature …
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CFD simulation of long slender offshore structures at high Reynolds number
Slender cylindrical structures are common in many offshore engineering applications such as floating wind turbines and subsea risers. These structures are vulnerable to flow-induced vibrations under certain environmental conditions which impacts their useful life. Flow-induced vibrations have been …
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Investigation of Fluid Flow in Grinding using LDA Techniques and CFD Simulation
… measurements and Computational Fluid Dynamics (CFD) simulation to get the air velocity distribution in varying conditions. The experimental results and the investigation made clear the contradictory knowledge relative to this issue and gave a full understanding of the air boundary layer flow. …
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Jp-8 Surrogates For Diesel Engine Application: Development, Validation, And Cfd Simulation
<p>Recently, diesel engine cycle simulation has been acknowledged as an effective way for the development and performance optimization of compression ignition engines operating on a variety of fuels. The goal of this research was, therefore, to develop a JP-8 surrogate with a limited number of fuel …
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CFD simulation of the dynamic flow behavior in a bubble column reactor
… Eulerian two-phase Computational Fluid Dynamics (CFD) model for modelling bubble columns is presented. This model is able to predict the bubbly flow parameter such as gas holdup, contact surface area, air volume fraction, pressure drop, and velocity magnitude to understanding the hydrodynamic flow …
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CFD simulation of flow fields associated with high speed jet impingement on deflectors
… and compare well with experimental results. The CFD solver controls and method used to obtain these results are summarized and justified.
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CFD Simulation of Combustion Using Automatically Reduced Reaction Mechanisms : A Case for Diesel Engine
… and thousands of reactions in the ignition simulation. Turbulence-chemistry interactions are accounted for by integrating the reaction rate over a presumed probability density function (PDF). Therefore, ignition-delay can be calculated and location of ignition can be identified precisely. …
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Study of natural ventilation design by integrating the multi-zone model with CFD simulation
… model and the computational fluid dynamics (CFD) simulation provides a way to assess the performance of natural ventilation in whole buildings, as well as the detailed thermal environmental information in some particular space. This work has coupled the multi-zone airflow model with the …
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Experimental Investigation and CFD Simulation of Active Damping Mechanism for Propellant Slosh in Spacecraft Launch Systems
… the data, water is substituted as propellant in CFD simulation. The research is done in three phases. The first phase includes modeling free surface slosh using CFD and validation of the model by comparison to previous experimental results. The second phase includes developing an active damping …
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Modelling and CFD simulation of a fluidized bed process for the capture of C02 from fossil fuel combustion sources
… a fluidised bed is studied in this project. CFD modelling has been used to study the efficiency of CO2 capture in a fluidized bed reactor containing a solid sorbent Calcium Oxide (CaO). This present work seeks to maximize CO2 conversion by a systematic modification of the flow domain. In …
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Evaluation of the performance of granular fertilizer boom sprayer through computational fluid-particles-dynamid CFD simulation and scaled-down model analysis
… with MARDI’s findings. In this evaluation, ANSYS CFD was used for the fluid-particles-structure simulation while the statistical and image processing were made via MATLAB software. The simulation results were verified with the results from an in-house scaled-down model which was fabricated with …
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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
… Three-dimensional computational fluid dynamics (CFD) simulations were performed to study the effect of co-current and counter-current spray drying configurations on the quality of microencapsulated fish oil with EWH powders in the last section of this work. Also, the separation of powder …
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Aerosol transport by coughing in a depressurized and air-conditioned chamber
… of aerosol generated by coughing; 3) the CFD simulation of coughing-induced aerosol transport in an air-conditioned chamber; 4) the validation of such a CFD simulation by experiment; 5) the depressurization of the air-conditioned chamber and 6) the mechanistic study of droplet evaporation. …
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Ventilation impact on indoor air quality problems in partitioned offices
… measurement and computational fluid dynamics (CFD) simulation methods were applied. The study results show that, the supplied air was uniformly distributed in the ventilated area under various conditions. At the same time, the contaminant distribution was influenced by almost all kinds of …
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