ESI Group Releases VA One

2023 Author: Hannah Pearcy | [email protected]. Last modified: 2023-11-26 11:39

ESI VA One 2016 takes optimum advantage of the continuous improvements in multi-core data processing in order to offer users significant improvements in the overall model runtime and the general speed behavior; especially when reading, writing and solving simulation steps. In addition, VA One enables flexible modeling of complex models. In this way, the simulation software meets the growing challenges that the automotive industry and the aerospace industry are facing when accurately predicting the wind and other noises caused by turbulent flow effects. Strong wind noise generated by fast-moving vehicles is more than just an acoustic nuisance for the end customer. Strong wind noise has a negative impact on telephone calls and other applications that use voice recognition in the vehicle. The reduction of wind noise is therefore important in order to make optimal use of the communication devices installed in the vehicle.

Additional information on the topic of the webinar: quickly design, test and optimize drive trains with system simulation

Mechanical drive systems are at the heart of many machines, as well as machine tools, systems and vehicles. In addition to manufacturing costs, energy efficiency and installation space, safety-relevant aspects, for example in the event of accidents, also play an important role when choosing the ideal drive solution. The simulation of drive trains gives developers reliable results for all phases of operation. This ensures functionality and operational security. In addition, potential can be fully exploited, resulting in better dynamic properties, such as experts from ESI ITI webinar More performance and precision with drive simulation on 2016-13-10 at 14:00 show. Information and registration at: More performance and precision with drive simulation

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Highlights from VA One 2016:

• Apply complex aero-vibro-acoustic (AVA) loads precisely to SEA models:Until now, SEA models that were excited with turbulent flows or other similar sources had to rely on suitable analytical models, which often leads to the loss of important load details. This gave users the choice of either accepting the loss of acoustic prediction accuracy or choosing a more expensive modeling approach. The GSP (General Surface Pressure) extension newly introduced in VA One 2016 removes this hurdle and enables acoustic developers to apply wavenumber spectra directly to SEA models. Users can take advantage of VA One's pre-processing capabilities and define loads directly from CFD data or other internal solutions. Precise development solutions can thus be achieved with minimal modeling and calculation effort.
• Improved acoustic prediction capabilities for FE models with complex flow:VA One 2016 addresses another important source of noise by offering advanced predictive capabilities for acoustic FE analysis of the non-uniform mean flow. In this way, the influence of the flow on the transmission loss (TL) can be precisely modeled using an automated OpenFOAM analysis, both for reactive (vehicle) silencers and, if porous, for sound-absorbing materials such as fiberglass. The greater the transmission loss, the quieter the muffler and exhaust. The challenge lies in modeling the complex, three-dimensional flow in the silencer. This is solved by offering VA One 2016, a sophisticated, automated solution,to take into account the influence of the exhaust gas flow on the silencer acoustics if complex geometries, perforated elements or porous materials are present.
• Behavior and productivity enhancements:VA One 2016 delivers a variety of improvements in terms of general behavior and processing and computing speed, which are of particular benefit to the aerospace, automotive, marine, and other markets. Improvements address in particular multi-core BEM calculations. Customers in the automotive sector and related industrial segments will benefit from the new BEM improvements in the calculation of noise emissions for modeling external noise, which is generated, for example, by vehicle engines, consumer electronics and industrial generators. In the case of complex BEM multi-core calculations, speed accelerations up to a factor of 50 were achieved. This improvement in computing speed was particularly welcomed by the aerospace industry,where users are constantly looking for performance improvements in BEM modeling and to support calculation-intensive failure predictions.

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