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Application: CFD Provides Insight Into Pulse Turbocharging
Posted Fri July 25, 2003 @07:02AM
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Application Turbocharging is a method of increasing the power output from reciprocating engines by utilizing the waste energy in the exhaust gases. The exhaust gases drive a turbine, which provides power to a compressor pressurizing the air at engine inlet, allowing more fuel to be burned. The advantages of this are increased power, reduced specific fuel oil consumption and reduced thermal loading.

Automotive engines typically use the pulse turbocharging method in which the turbine inlet is closely coupled with the exhaust manifold. As a consequence, the turbine is subjected to a highly pulsating flow field caused by, and synchronized with, the opening and closing of the engine valves. However, there is a lack of understanding of the turbine aerodynamics under pulsating conditions. As a consequence of this, over the past decade the Thermofluids Section at Imperial College, London, has focused on researching the aerodynamics of turbocharger turbines under pulsating flow conditions.

( Read Full Article | Application )

Application: Simulating the Flowfield Around Helicopters
Posted Thu July 24, 2003 @09:36AM
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Application CFD (computational fluid dynamics) has for many years been at the heart of helicopter design, with steady state simulation of aerodynamics providing engineers with more design guidance than could ever be achieved from wind tunnel experiments alone. With deeper understanding of the complex flows involved, it has become clearer that new techniques are required to fully capture the true nature of the flow field. The key lies in developing flow field simulation technology to handle the transient affects associated with rotor motion, including, for example, pitching of the blades.

The Defence Aeronautics Programme at the CSIR (Council for Scientific and Industrial Research), in South Africa has been a key technology solution provider to the South African Air Force (SAAF) for the past five decades. Considerable resources have been dedicated to Helicopter Technology in particular. The programme’s CFD modeling and simulation, aeroelasticity, advanced structures and wind tunnel facilities, are being used to advance aeronautical technology relevant to helicopters in support of helicopter acquisition, operations, aerodynamic analysis and optimization, flight simulator development, hardware development and improvement.

( Read Full Article | Application )

Education: CD adapco Group's CFD Thesis Prize 2003
Posted Thu July 24, 2003 @09:21AM
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News The CD adapco Group is continuing its CFD thesis prize program. This year, we are once again seeking outstanding PhD theses, which represent important and original contributions to knowledge in the field of numerical techniques or physical models aimed at simulation of fluid flow, heat and mass transfer, and related processes. The following prizes shall be awarded:

1st prize: 3000 US$
2nd prize: 2000 US$
3rd prize: 1000 US$

The aim of these prizes is to stimulate research in the area of Computational Fluid Dynamics (CFD). Nominations are being accepted from all over the world until December 30, 2003; theses up to one year old will be considered.

( Read Full Article | Education )

New Software: CEI Upgrades Collaborative Visualization Software
Posted Thu July 24, 2003 @08:52AM
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Post Processing CEI's new EnLiten 1.6 3D geometry viewer and animation player includes a range of new and upgraded features requested by users who want an easy way to view, analyze and manipulate complex visualization scenarios from EnSight and EnSight Gold. EnLiten 1.6 is available for free downloading on the CEI web site.

The latest version of EnLiten offers smaller file sizes, greater control over model attributes, and new features such as demo mode, alpha transparency and fast display mode. EnLiten Gold 1.6 supports the same new VR features added to the recently released EnSight Gold 7.6 visualization software.

One of the major issues addressed by EnLiten 1.6 is the size of scenario files from EnSight and EnSight Gold. New polygon reduction functions in EnSight and EnSight Gold allow users to quickly and easily reduce polygon counts for scenario files to be used in EnLiten. Polygon counts can be reduced to 10 percent of the original size without significant image degradation. This makes it easier to import, run and interactively manipulate files within EnLiten.

( Read Full Article | New Software )

Business: Gasunie Research and Fluent Europe Form Partnership
Posted Wed July 23, 2003 @09:07AM
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News Gasunie Research of The Netherlands and Fluent Europe Limited are to form a new partnership aimed at providing clients with a truly total consultancy service based upon the combination of experimental work and simulation.

Operating primarily in the utilisation, conversion and transport of energy, the partnership will pool the expertise of both companies to provide leading edge solutions for industry, OEM’s, engineering consultants and transmission and distribution companies.

Gasunie Research has developed wide-ranging expertise in research and physical experimentation through 40 years of work on energy-related problems. It has made an essential contribution to the development of the Gas Market in the Netherlands. Innovation forms the basis for the consultancy practice of this company by offering integrated solutions to complex problems related to energy processes, gas quality and diversity, combustion and flow phenomena.

Fluent is the world’s largest provider of computational fluid dynamics (CFD) software and services, and is established in 22 industries in total. Its FLUENT CFD software package allows the virtual modelling and visualization of gas and liquid flows, heat and mass transfer and chemical reactions, providing the ability to rapidly trouble-shoot and optimise energy-related processes.

( Read Full Article | Business )

Application: CFD Used to Study Tacoma Narrows Currents
Posted Wed July 23, 2003 @07:39AM
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Application The Tacoma Narrows, site of one of engineering's most infamous failures, is subjected to enormous tidal currents each day. The strong currents are complicating the job of constructing a new bridge across the narrows.

Curtis Ebbesmeyer, a retired expert in the tidal currents of Puget Sound, has studied the Tacoma Narrows. "The Narrows is a spectacular place," Ebbesmeyer said. "If you had eyes to see through water, it would be probably the most spectacular thing you could imagine in the Pacific Northwest."

At maximum tidal exchange, the amount of water that flows through the mile-wide passage is the equivalent of several Amazon Rivers.

Harsh conditions in the Narrows have required the development of innovative equipment and construction techniques, and have inspired an almost fanatical commitment to safety at Tacoma Narrows Constructors, the company building the bridge.

( Read Full Article | Application )

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