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Showing 1 to 20 of 50 for “"CFD modeling"”.
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CFD Modeling of nanoparticle formation in a plasma synthesis reactor
The present work reports on the simulation of metal powder formation in a Inductively Coupled Plasma reactor. A carrier gas transports the metal powder into the reactor in where it attains the vapor phase. The products are recovered after a quenching process. The model accounts for particle …
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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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Advancing State-of-the-art Multiphase CFD Modeling for PWR Applications
Multiphase Computational Fluid Dynamics (M-CFD) has the potential to provide high fidelity simulation of complex boiling phenomena in Light Water Reactors (LWRs), thereby accelerating the development cycle and reducing the need for expensive large-scale experiments. M-CFD relies on two-phase …
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CFD Modeling and Optimization Analysis of Thermal Energy Storage Based Solar Collectors
… In this study, the computational fluid dynamics (CFD) modeling of a heat pipe ETC (HPETC) with and without the integration of phase change materials (PCMs) is performed. In order to cross-validate the obtained results from CFD and recent experimental analysis, the boundary conditions are set as …
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CFD modeling of a tailgate ventilation condition in a longwall bleeder system
… With the use of Computational Fluid Dynamics (CFD), the interaction between the air flow at the longwall face and factors that contribute to accumulations around the face can be modeled and visualized in great detail. The results confirm that the tailgate corner of the longwall face is a …
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CFD Modeling and Simulation of Natural Circulation in Helium- Cooled Very High Temperature Reactors
… sensors.</p> <p>Computational Fluid Dynamics (CFD) simulations were conducted in ANSYS Fluent using a 2D model for 4 Riser and 4 downcomer tubes connected to an Upper Plenum and Lower Plenum, as well as a simplified single-tube heating configuration. Mesh sensitivity and grid independence …
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CFD Modeling of Separation and Transitional Flow in Low Pressure Turbine Blades at Low Reynolds Numbers
… occur in the turbine flow passages. For accurate CFD predictions of the flow, correct modeling of laminar-turbulent boundary layer transition is essential to capture the details of the flow. To investigate possible improvements in model fidelity, both two-dimensional and three-dimensional CFD …
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Hydrodynamic CFD modeling of a pharmaceutical reactor vessel provided with a retreat-blade impeller under different baffling conditions
… performance. Computational Fluid Dynamics (CFD) is a computational tool that employs numerical methods and algorithms to discretize and numerically solve partial differential equations (PDEs) representing mass, energy, and momentum conservation equations for the purpose of analyzing fluid …
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Development of a Self-Calibrating MEMS Pressure Sensor Using a Liquid-to-Vapor Phase Change
… effect. Previous work focused on modeling and improving the thermal performance of the sensor identified potential solutions to extend the sensor's calibration and operating range without increasing the micro-heater's power consumption. This report focuses on using a water …
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Application of hybrid Computational Fluid Dynamics turbulence model, STRUCT-[epsilon], on heated flow cases
Computational Fluid Dynamics (CFD) modeling is a powerful numerical method that can be used to characterize fluid flow, pressure drop, and thermal transient behavior in complex flow geometries. However, with current CFD simulation techniques, the accurate modeling of turbulence structures is often …
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Developing a system to measure rheology of conditioned soil for soft-ground TBM tunneling
… parameters using Computational Fluid Dynamics (CFD) modeling. The results demonstrate that the system of combining lab experiment and CFD modeling is a feasible method to determine rheology of conditioned soil. The Bingham plastic model is shown to be a suitable model to represent the rheology …
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Development of a remote analysis method for underground ventilation systems using tracer gas and CFD
… methodology that uses tracer gas techniques and CFD modeling to analyze underground mine ventilation system status remotely. After an unanticipated event that has damaged ventilation controls, the first step of the methodology is to assess and estimate the level of the damage and the possible …
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An Investigative Study of Gurney Flaps on a NACA 0036 Airfoil
… the experiment in computational fluid dynamics (CFD). During the study, problems with the wind tunnel data were seen. After a careful diagnosis, the problem was traced to dirty flow conditioners which were subsequently replaced. </p> <p>Five Gurney flaps at 1, 2, 3, 4, and 5% of the chord were …
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New approach to drug product process design : leveraging first principles modeling and cross-product process monitoring to improve process design robustness
… First Principles, Computational Fluid Dynamics (CFD), and Cross-Product Process Monitoring (CPPM) to improve process design robustness with reduced testing and faster development cycle. The project focused specifically on the drug product development network, which included the development of …
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Design and optimization of an ultra-compact thermal management system integrated with micro-fins for high power applications
… using computational fluid dynamics (CFD) modeling. The proposed JI-TMS consists of an array of nozzles, impinging fluid onto the heated target surface. The main contributing factor to poor performance of impinging jet thermal management systems is due to the pressure drop across the …
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Flow through and around fish farming nets
<p>Computational fluid dynamics (CFD) modeling, tow tank and field measurements were used to investigate current flow through and around net panels and cages. For the numerical computations a porous media model was used to represent the net allowing efficient computation of both exterior and …
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Scramjet combustion modeling using eddy dissipation model
… an open-access Computational Fluid Dynamics (CFD) solver. Typical CFD modeling approaches for turbulent supersonic reacting flows are associated with a high computational cost. This in turn inhibits the use of CFD in scramjet combustor design or in higher level preliminary designs such as the …
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An Operational Value Stream Analysis for Developmental Excellence
… contract theory, computational fluid dynamics (CFD), and machine learning, this research explores the impacts of engineering requirements, financial alignment among stakeholders, and improved efficiencies in predictive modeling techniques for two separate air vehicle programs: A and B. A Monte …
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Economic performance of modularized hot-aisle contained datacenter PODs utilizing horizontal airflow cooling
… of measurement and Computational Fluid Dynamic (CFD) modeling software.
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Physical controls on water flow and solute transport in coastal aquifers
… of wave effects, a Computational Fluid Dynamics (CFD) modeling tool, Fluent, is used to simulate wave- induced sea level oscillations. A flow-averaged approach is developed to generalize wave motions acting onto the beach for the sake of the feasibility of numerical computation. A two-dimensional …
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