The Physics of the B Factories

This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and data taking related issues. Part B discusses tools and methods used by the experiments in order to obtain results. The results themselves can be found in Part C

Simulation of 1D Flow Coupled with 3D Multi-Body Dynamics Model of a Double-Acting Swashplate Compressor

This paper describes an integrated 1D/3D modeling approach for a multi-cylinder double-acting automotive A/C compressor using a multi-physics CAE system simulation software, GT-SUITE. This tool is used to build a 1D flow model of a compressor using the original CAD, along with a 3D multi-body dynamics model to study overall compressor performance. Various flow and mechanical-related built-in libraries, supported with pertinent physics, are utilized to study fluid flow and related forces on the pistons, shaft and the swashplate. There exists an easy approach in the software to schedule the suction and compression cycles in the cylinders. A full 3D modeling approach becomes computationally expensive especially when the compressor performance is to be evaluated during speed ramps, while the proposed 1D flow modeling approach yields results quickly. Analysis results will include gas pressure forces, effects of piston and swashplate inertia, as well as the generated mass flow rates. Also included will be the results of transient pressure pulsations and forces. The model also is able to predict any flow-related resonances that exist. Comparison with measured data is shown, where possible

From CAD to 1D: A Direct Approach to Modeling Scroll Compressors with Multi-Physics Simulation

Modeling scroll compressors with 1D fluid dynamics often involves the time-consuming exercise of calculating chamber volume and port areas vs. crank angle either manually from CAD or through scripting. In a novel approach, GT-SUITE simulation software is used starting from the original CAD model of the scroll fixed and orbiting involutes to create a 1-dimensional fluid dynamic model automatically. This allows models to be built in minutes while preserving the true CAD geometry. The process of calculating the chamber volume, port area, leakages, and areas required to convert chamber gas pressure to forces/moments on the orbiting scroll will be presented. Additionally, a comparison between the model prediction to test performance on a production automotive air conditioning scroll compressor will be shown

Artroplastia total do joelho com o apoio tibial móvel: avaliação dos resultados a médio prazo

OBJETIVO: Avaliações dos resultados a médio prazo da aplicação da prótese com apoio tibial móvel. MÉTODOS: Noventa e seis pacientes (107 joelhos) foram submetidos a artroplastia total do joelho realizada com um modelo de prótese com mobilidade rotatória no componente tibial. Os pacientes foram avaliados após um seguimento médio de 52,7 meses - desvio padrão 21,94 (mínimo de 24 meses e máximo de 120 meses), através do protocolo de avaliação "Knee Society Clinical Rating System" (KSCRS), com uma média de 78,22 pontos. RESULTADOS: Entre as complicações transoperatórias e pós operatórias imediatas ocorreram uma deiscência de sutura, com cura espontânea, duas fraturas de patela, uma fratura do côndilo medial do fêmur, três paresias do nervo fibular lateral e uma distrofia nervosa simpático reflexa. As complicações tardias foram uma fratura da patela, uma fratura distal do fêmur, quatro solturas assépticas e quatro infecções profundas, que necessitaram de revisão. CONCLUSÃO: Excluindo-se os casos que necessitaram de uma revisão, por soltura séptica ou asséptica, os autores concluem serem bons os resultados clínicos e funcionais obtidos com a prótese com o apoio tibial móvel num seguimento a médio prazo

Zinc-Fuel Cell Powered Car (sequence unknown), IPRO 313 - Deliverables: IPRO 313 Final Report F09

The team’s objective is to design a refuelable electric vehicle based on a zinc‐air battery, that is comparable to a current consumer vehicle in performance, cost, and safety; and to also develop a system for zinc fuel delivery that requires a minimum of changes to the existing fuel delivery infrastructure.Deliverables for IPRO 313: Zinc-Fuel Cell Powered Car for the fall 2009 semeste

Zinc-Fuel Cell Powered Car (sequence unknown), IPRO 313 - Deliverables: IPRO 313 Brochure F09

The team’s objective is to design a refuelable electric vehicle based on a zinc‐air battery, that is comparable to a current consumer vehicle in performance, cost, and safety; and to also develop a system for zinc fuel delivery that requires a minimum of changes to the existing fuel delivery infrastructure.Deliverables for IPRO 313: Zinc-Fuel Cell Powered Car for the fall 2009 semeste

Zinc-Fuel Cell Powered Car (sequence unknown), IPRO 313 - Deliverables

The team’s objective is to design a refuelable electric vehicle based on a zinc‐air battery, that is comparable to a current consumer vehicle in performance, cost, and safety; and to also develop a system for zinc fuel delivery that requires a minimum of changes to the existing fuel delivery infrastructure.Deliverables for IPRO 313: Zinc-Fuel Cell Powered Car for the fall 2009 semeste

Zinc-Fuel Cell Powered Car (sequence unknown), IPRO 313 - Deliverables: IPRO%20313%20Project%20Plan%20F09_redacted

The team’s objective is to design a refuelable electric vehicle based on a zinc‐air battery, that is comparable to a current consumer vehicle in performance, cost, and safety; and to also develop a system for zinc fuel delivery that requires a minimum of changes to the existing fuel delivery infrastructure.Deliverables for IPRO 313: Zinc-Fuel Cell Powered Car for the fall 2009 semeste