Library

2765 match your search

Switched reluctance machines (SRMs) have recently become popular in the automotive market as they are a good alternative to the permanent magnet machines commonly employed for an electric powertrain. Lumped parameter thermal networks are usually used for thermal analysis of motors due to their low computational cost and relatively accurate results. A critical aspect to be modelled is the rotor-stator air-gap heat transfer, and this is particularly challenging in an SRM due to the salient pole geometry. This work presents firstly a review of the literature including the most relevant...
STAR-CCM+ v10.06 新機能紹介
本 ウェビナー で は、2015年10月28日に世界同時リリースのSTAR- CCM+ v10.06の 新機能情報について、下記の機能を中心に ご 紹介いたします。 ・パーツベースインターフェース ・サーフェス修正の新GUI ・3D-CADの自動修正 ・有効メッシュのソースメッシュ自動生成 ・有限要素法固体応力解析の拡張 ・固体シェル内の電気伝導 ・レオロジー解析機能
Incrementar el conocimiento académico acerca de la aerodinámica de un coche tipo fórmula. Crear una guía para el estudiante interesado en tener un acercamiento general a la aerodinámica del coche tipo Formula del equipo de la UNAM Se utilizarán técnicas de fluidos computacionales para realizar simulaciones del flujo alrededor del coche y así incrementar el entendimiento del mismo. Se busca incrementar el interés del estudiante en temas relacionados con aerodinámica aplicados a vehículos de carreras. Se busca justificar él porque del diseño de los vehículos que concursaron en la competencia de...
The phenomenon of three-dimensional flow separation is and has been in the focus of many researchers. An improved understanding of the physics and the driving forces is desired to be able to improve numerical simulations and to minimize aerodynamic drag over bluff bodies. To investigate the sources of separation one wants to understand what happens at the surface when the flow starts to detach and the upwelling of the streamlines becomes strong. This observation of a flow leaving the surface could be captured by investigating the limiting streamlines and surface parameters as pressure,...
One main goal in the aerodynamic development of passenger vehicles is reduced fuel consumption. As vehicles are bluff bodies, drag is dominated by pressure drag, which is mainly caused by detached flow. To enable further reductions of the drag, it is of great importance to understand the physical phenomena behind separation. In this paper the influence of surface pressure gradients on the flow pattern of a full-scale passenger vehicle is investigated. The objective is threefold: i) Present the flow pattern on upper parts of the vehicle, ii) discuss the pressure gradients around selected areas...
Simulações acústicas: ruído e vibração
Projetos de engenharia atuais requerem avaliações envolvendo ruído e vibrações cada vez mais profundas. De um lado os requisitos têm se tornado constantemente mais restritivos e por outro lado os consumidores tem escolhido seus produtos também baseado em níveis de ruído percebido. Entre as principais fontes de ruído pode-se destacar como exemplos: máquinas rotativas tais como ventiladores, misturadores, motores elétricos, turbocharger, etc.; características do escoamento externo em veículos, aviões, etc.; transmissão de ruído proveniente de vibração e escoamento em sistemas de dutos, tais...
SPEED v10.06 forwards CD-adapco’s mission to help customers discover better designs, faster, by making it easier for SPEED users to leverage HEEDS® MDO, a best-in-class process automation and optimization tool developed by Red Cedar Technology, a wholly-owned subsidiary of CD-adapco. SPEED v10.06 provides users with a library that links SPEED and HEEDS MDO for seamless electric machine design.
Mixing Simulation with Ease: Automating the Simulation Set-up Process
Poor mixing can result in the loss of millions of dollars within the chemical, pharmaceutical and many allied industries. Computational Fluid Dynamics (CFD) simulation is used to answer the numerous challenges that cannot be solved by analytical or experimental methods. This is especially important in the design and scale-up phases of process development. A common hurdle in performing simulation mixing for engineers who are new to simulation is the significant amount of time required to set up geometry, meshing and adequate physics. Even for experienced simulation experts, creating both...
The performance of the Standard Cirrus glider is simulated using a Computational Fluid Dynamics code, solving the incompressible Navier-Stokes equations for steady flow. To calculate the transitional boundary layer flow a correlationbased transition model is used. It is found that the numerical model is able to predict the performance of the Standard Cirrus well. The simulations using the transition model are found to improve the results compared to fully turbulent simulations, except for the region of the stall. The best in-flight measured glide ratio for the Standard Cirrus is 36.5 at 94.5...

Pages