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Application: CFD Helping Yacht Design for America’s Cup
Posted Wed August 06, 2003 @12:27PM
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Application The America's Cup, dating from 1851, is the oldest trophy in international sport and is considered to be yacht racing's Holy Grail. With such importance based on the design, CFD (Computational Fluid Dynamics) has become crucial in the production of a winning yacht.

In the year 2000, a German challenger started to work towards a future challenge called Pinta Racing. An international team of experts for hull form design, sailing aerodynamics, and further technical resources were brought together to support an outstanding crew of internationally renowned sailors to challenge the cup holder. The independent consulting company, Hamburg Ship Model Basin (HSVA) was asked to join the Pinta Racing’s expert team and perform the hydrodynamic assessment of the new ship hull. The main activities of HSVA comprised CFD computations and natural experimental tests in their large towing tank. The CFD analysis was based on potential flow results using the CFD code Comet from the CD adapco Group.

( Read Full Article | Application )

Grid Generation Help Needed
Posted Tue August 05, 2003 @07:06AM
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Help Desk Amit R. Patel writes " I have a problem in Grid Generation in GAMBIT 4.01. Can Someone From "INDIA", will give his/her contacts so that i can chat / discuss / talk by phone for my difficulties.

I will be highly oblige, and Thanking You

Amit R. Patel, Lecturer
Mechanical Engineering Department
Faculty of Tech. & Engg.
The M. S. University of Baroda

( Post Comment )

Virtual Reality Improves Understanding of CFD Results
Posted Thu July 31, 2003 @03:42PM
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Post Processing Mechanical Engineering Magazine has posted an article discussing the benefits of using virtual reality technology to visualize CFD results.

Today, the use of fluid flow analysis to solve design problems is slowed by the fact that the person performing the analysis often is not an expert on the design issues involved, while the engineers and customers who know the design best often have difficulty interpreting fluid flow results.
Virtual reality can overcome this problem by creating a computer-generated world in which people who are not analysis experts can see the results in a context that they can easily understand. Even people who are familiar with interpreting analysis results can gain insights that make it possible to understand the root causes of observed problems and plan design changes in much less time.

Virtual reality software is becoming more common and is now available commercially for visualizing CFD results. At the same time, virtual reality hardware has become less expensive leading to increased adoption of this powerful technology.

( Post Comment )

Business: CD adapco Group Becomes PERMAS Distributor
Posted Wed July 30, 2003 @07:56AM
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News The CD adapco Group, a leading provider of engineering solutions, is announcing its new status as the official distributor of PERMAS in the USA.

PERMAS, developed by INTES, is one of the most advanced finite element software systems available in the world. It has been used in the automotive, aerospace, and ship building industries for almost two decades. PERMAS enables the engineer to perform analyses in many fields including statics, dynamics, fluid-structure acoustics, heat transfer, design optimization and reliability.

For all analysis types, highly efficient solvers boost the performance of PERMAS. The elapsed time and the amount of required computer resources are considerably smaller than those of other general-purpose finite element systems. Moreover, the software is continually adapted to the most advanced and powerful computers and also offers fully parallelized computing. An additional benefit is its breakthrough in vibration modal analysis for large models and high number of modes. It also offers extremely fast contact algorithm for large solid models, which results in more accurate stress results. Automated part coupling and automated generation of spotweld connections contribute to reduced modeling times and improved mesh quality.

Bill Wheeler, Director of Structural Engineering at the CD adapco Group says: “We are very excited to be working with INTES. PERMAS is well proven software that has been available for many years in numerous structural analysis departments. This ties in with our vision to provide best quality CAE products and services and is a real step forward”.

( Post Comment | Business )

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 )

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