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Showing 1 to 14 of 14 for “"Computation fluid dynamics"”.
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Acceleration of combustion computation fluid dynamics simulations through machine learning
… work demonstrated the acceleration of combustion computational fluid dynamics simulations through Deep Operator Networks (DeepONets), achieving up to an 18 times speedup in the chemical source term evaluation. Another numerical experiment showed an overall reduction of approximately 30% in …
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Vertical hydrodynamic focusing in an isotropically etched glass microfluidic device
The development of microfluidic devices has enabled precision control of nanoliter-scale environments and reactions. Vertical hydrodynamic focusing is one possible way to improve the optical performance of these devices while maintaining precision control. Vertical hydrodynamic focusing was studied …
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CFD study of section characteristics of Formula Mazda race car wings
… car class, this study was conducted. The Star-CD computation fluid dynamics code was used to perform a laminar simulation on the front and rear wings of a Formula Mazda with different angles of attack and Gurney flap heights. Results are presented graphically showing pressure and velocity …
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Measurements and Modeling of Coal Ash Deposition in an Entrained-Flow Reactor
… which has been implemented in a quasi-unsteady Computation Fluid Dynamics (CFD) simulation. The UDF consists of models governing ash particle impaction and sticking, thermal and physical properties of ash deposits, unsteady growth of the ash deposits, and the effects of the insulating ash layers …
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Modeling buoyancy-driven airflow in ventilation shafts
… shafts. These improvements are validated by Computation Fluid Dynamics (CFD) models that haven been validated by small scale and full scale experiments. The full scale experiment provides a detailed data set of an actual atrium that can be used in further validations and demonstrates the …
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Computational Analysis of Transient Unstart/Restart Characteristics in a Variable Geometry, High-Speed Inlet
… Mach 4.0 wind tunnel conditions. Advanced Computational Fluid Dynamics techniques such as transient solutions to the Unsteady Reynolds-averaged Navier-Stokes equations and relative mesh motion are used to predict and investigate the unstart and restart processes of the inlet as well as the …
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Constrained Control for Helicopter Shipboard Operations and Moored Ocean Current Turbine Flight Control
… sea-based conditions. A complex helicopter-ship dynamics interface has been developed as a system of implicit nonlinear ordinary differential equations to capture essential characteristics of the nonlinear helicopter dynamics, the ship dynamics, and the ship airwake interactions. Various airwake …
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Experimental Investigation of Fan Rotor Response to Inlet Swirl Distortion
… to induce a swirl distortion matching results of computation fluid dynamics models of a conceptual blended wing body aircraft at a plane upstream of the fan. The swirl distortion was then free to develop naturally within the inlet duct before being ingested by the engine. Results from the …
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Using remote sensing to track resilience of subtropical rainforests against fires and tropical cyclones
… provided new tools to study forest-disturbance dynamics across unprecedented spatiotemporal scales. In this thesis, a range of high-resolution remote sensing products, including aerial imagery, satellite multispectral imagery, and airborne LiDAR scans, were used to evaluate how fires and …
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Development of a liquid drug delivery payload for modular, wireless, incorporeal robots for laparoscopic surgery
Minimally invasive abdominal surgery (laparoscopy) is performed using long, slender instruments inserted through multiple small incisions in the patient's abdominal wall. This results in less post--operative pain, shorter hospital stays, and a quicker return to normal activities for the patient …
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Cavitation in Pharmaceutical Manufacturing and Shipping
… at the University of Denver demonstrated that fluid cavitation can generate a large number of sub-visible protein particles in ultra clean formulations, but that mitigation can be achieved with fluid property manipulation. The goal of this research was to (1) assess the risk of cavitation under …
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Developing and evaluating a partition-cavity solar thermochemical reactor for syngas production via computational fluid dynamics
… process was investigated using the coupling of computational fluid dynamics (CFD) and discrete element method (DEM). The reduction rate was studied based on the catalyst textual properties and the reaction condition. The results revealed that the increase of catalyst specific surface area and …
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Effects of operating and geometric variables on hydrodynamics and tablet dissolution in standard and modified dissolution testing apparatuses 2
… large body of work, some key aspects of the hydrodynamics of Apparatus 2 have received very little attention, such as the determination of its power dissipation requirements (which controls solid-liquid mass transfer processes) and the velocity distribution under the different agitation conditions …
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A CAD-centric Approach to CFD Analysis With Discrete Features
<p>During the conceptual design stage several concepts are generated, and a few are selected for detailed analyses. CAD models from conceptual design often follow the "over-the-wall" approach for downstream analyses such as FEA, CFD, heat transfer, and vibrations. A CAD-centric approach will be …