CFD

Latest Posts

  • Quest-for-Quiet-Exa-ATZ
    By Vincent Le Goff In the automotive industry, it’s not what you hear – it’s what you don’t hear – that matters the most to vehicle safety and comfort. Advancements in aeroacoustics have helped...
  • Quiet Comfort
    Quiet Comfort: Acoustic Simulation to Resolve Fan Coil Cassette Unit NoiseBy Mohammed MeskineLook up and you might be able to spot a fan coil cassette unit: an active comfort unit integrated into the...
  • By Robert Powell Off-highway equipment challenges manufacturers to find new ways to reduce product noise. In addition to improving performance, efficiency and value in new designs, manufacturers...
  • By Adrien Mann If you’ve been in a new car lately, you know that automotive OEMs are focused on reducing noise from sources like the engine, wind, and rolling. This means that drivers and...
  • Underhood Airflow
    Overheating could cause permanent damages to engines. Oversized radiators are usually used to ensure that engines could be cooled down in time, on the track. On the other hand, we want to minimize...
  • After more than a decade away from race circuits, Jaguar Racing is joining the latest Formula E series
    Electric vehicles hogged the limelight at this year’s Paris Motor Show, and not just cars of the road-going variety. With the third season of the FIA Formula E championship commencing earlier...
  • Automotive Infotainment System
    Today’s infotainment system is the brain of a modern vehicle as it provides its operating information and the information on its surroundings. It helps the driver navigate and operate the vehicle...
  • Mark Gleason | Automotive Aerodynamics Expert and Former Chrysler Director
    Industry expert and Former Chrysler aerodynamics director, Mark Gleason, discusses the limitations of physical prototyping for automobiles.  He also highlights how and why the automotive...
  • Electric vehicles look set to hog the spotlight at this autumn’s Paris motor show
    Electric vehicles look set to hog the spotlight at this autumn’s Paris motor show as makers put increasing faith in a technology that is still struggling in the showrooms. The biannual...
  • Brake rotors are a prime target for light-weighting. Why? For starters they are heavy, around 21 lbs per wheel for a large sedan. This mass has a significant rotating inertia which needs to be...
  • The most far-sighted automotive companies are taking advantage of increasingly cheap computing power to leverage simulation work more heavily in their vehicle development. The technology behind...
  • Vermeer presented this optimized design showing vertical plane noise dB map at NoiseCon 16
    According the U.S. Environmental Protection Agency, the key to attacking noise pollution is addressing it in the design stage. The Agency states it is much easier to design noise out of a machine...
  • We need a complete rethink about how the automotive industry measures fuel economy.
    We need a complete rethink about how the automotive industry measures fuel economy. The laboratory tested methods used globally today just aren’t fit for purpose. They’re riddled with...
  • A lot has been discussed in the media recently about the next generation of Class 8 tractor designs and how they will seek to improve aero-efficiency – and therefore reduce costs – for...
  • Exa's Dr. Andrea Shestopalov Describes Exa's Optimization Solution
    Exa's Dr. Andrea Shestopalov describes how Exa's solution for optimization is based on a statistical response surface approach and is a fully automated process using Exa PowerFLOW's...
  • Tesla has stated that with the new Model 3 electric car, it wants to reduce the drag co-efficient to an incredibly slippery 0.21 CD (210 counts), down from 0.24 on the Model S.
    Tesla has stated that with the new Model 3 electric car, it wants to reduce the drag coefficient to an incredibly slippery 0.21 CD (210 counts), down from 0.24 on the Model S. But the maker also...
  • There are many drawbacks to wind tunnels. Chief is not understanding why you’re getting the results shown. If you are aiming for an incredibly low drag co-efficient approaching 0.20, then you need to understand the science behind it.
    The mystique of the wind tunnel as the ultimate place to perfect a car’s aerodynamics is blinding some makers to the superior abilities of digital simulation. Retiring head of design at GM...
  • Automotive emissions testing is a complicated problem and digital simulation may be the solution
    Emissions testing just got a whole lot more complicated than it already was for manufacturers – but it really doesn’t need to be. The latest complication originates in Europe, where...
  • Exa's Dr. Paul Stewart discusses the importance of 3D visualization  for vehicle engineers and designers
    Carmakers are continually trying to produce new and exciting designs which appeal to a wide range of customers. At the same time, they’re having to meet increasingly stringent rules and...
  • Exa's demonstrates 3D visualization of automotive and commercial vehicle simulations at Fuel Economy Detroit
    The disparity between published test figures and real-world fuel economy has long been a topic of discussion, and in Europe, the average gap between the two has reportedly risen to 40%. The current...
  • Exa PowerFLOW simulation of a Power Generator with and without absorbing materials
    Noise is a duality. On one hand, it can be soothing, inspirational, even emotional, like Beethoven’s 5th Symphony, or the fine-tuned thunderstorm of a Jaguar F-Type R (see Jalopnik article...
  • The Importance of Integrated Design Simulation and Visualization Tools
    Exa's Dr. Paul Stewart discusses how automotive engineering and design studios can communicate through simulation and visualization to realize the full aerodynamic, thermal and acoustic potential...
  • Fun aerodynamic simulation of a football using Exa PowerFLOW
    In what will probably turn out to be the final game for the first quarter back in NFL history to reach an incredible 200 career wins, Peyton Manning’s Denver Broncos put on a defensive...
  • Onroak Automotive became the first French constructor to win the Daytona 24 Hours when Speed Motorsports crossed the finishing line first with their Ligier JS P2-Honda
    Le Mans-based endurance race car designer, Onroak Automotive, recently secured famous victories in the 2015 FIA World Endurance Championship with its LMP2 prototype race cars...
  • Accurately model real world road conditions using Exa simulations
    Exa's Dr. Brad Duncan is interviewed regarding how engineers can model ever-changing road conditions to best predict real-world performance using Exa's software, PowerFLOW, for accurate...
  • Early thermal evaluation through simulation can help identify optimum efficiency early in the development process
    Vehicles powered by internal combustion engines are seldom short of excess heat. In fact, Exa’s PowerFLOW® simulation software is often used by the world’s leading car manufacturers...
  • Simulation provides insight into fine details that physical prototypes cannot such as this underhood engine cooling airflow
    Exa’s Dr. Ales Alajbegovic discusses the limitations of vehicle physical testing. He describes how physical prototypes of vehicles are extremely expensive to produce and are often only...
  • Convertibles create a challenge for NVH engineers due to the increased turbulent airflow
    Convertibles made a bit of ‘noise’ at the Los Angeles Auto Show last week, with the unveiling of the Range Rover Evoque Convertible, Volkswagen Beetle Dune and Fiat 124 Spider. You could...
  • Exa PowerFLOW enables engineers to calculate how the turbulent vortices interact with the car and evolve around it, and accurately predict how dirt particles will behave.
    No car will stay clean, especially at this time of the year, but some cars unfortunately get filthy more quickly than others. So how do you figure out whether a new model is going to attract dirt in...
  • We’ve all experienced turbulence on an airplane, but back on terra firma those troublesome, swirling pockets of air can have just as great an impact on how a car moves along the road and how...
  • Simulation offers the hard numbers, provides exact insight into the cause or "why" certain results occur. Exa Corporation's Dr. Ales Alajbegovic explains how simulation-driven design...
  • Global competition for market share is fierce in the automotive industry. Automotive manufacturers work hard to make their vehicles attractive to consumers to suit tastes and meet regulations in a...
  • In his ‘Confessions of a Capital Junkie’, Head of Fiat-Chrysler, Sergio Marchionne, paints the picture of an industry that increasingly struggles to make money. But the idea that car...
  • It’s been a three and a half year tease from Tesla CEO Elon Musk, but many will say it’s been worth the wait as the Model X was unveiled last night at the company’s...
  • Makers love SUVs because they’re a global phenomenon. The same car will be snapped up in Milwaukee, Milan or Nanjing with comparatively few changes. The resulting economies of scale are great...
  • Automakers are spending millions on technology-rich smart cars
    One of the amusements when holidaying in exotic countries has always been (for petrolheads anyway) spotting local versions of cars that the maker has long since stopped selling in your home market....
  • Optimization through simulation using Exa PowerFLOW
    Regulatory requirements for emissions reduction are increasing the importance of vehicle aerodynamics. A further reduction in drag is key: it’s thought that most OEMs are targeting a drag...
  • It’s July, and getting hotter every day. Spending time in the car can provide a welcome respite from the soaring temperatures outside. That said, a car’s heating, ventilation and air conditioning (...
  • Exa Simulations Aide Complex Motorsports Engineering for Onroak Racecars
    The news out of Germany is that the owners of the Nürburgring have effectively banned timed runs, by insisting that manufacturers adhere to track speed limits. The desire to be fastest around...
  • Race car drivers feel the need for speed. Whether they’re hugging the curves at Circuit de la Sarthe or accelerating down the final stretch at Indianapolis Motor Speedway, race...
  • The emergence of autonomous cars will present many interesting technical challenges, not the least vehicle aerodynamics. Due to the nature of the problem, many of the aerodynamics challenges will...
  • As manufacturers seek to strip ever more weight out of vehicles to meet emissions standards, they’ve worked to ensure the thinner panels don’t deform at speed. But what if a certain...
  • As part of traditional product development, car manufacturers build a fleet of pre-production vehicles in special facilities, incurring a huge level of cost – easily in excess of $1 million per...
  • Lithium-ion batteries are like humans – they don’t like to be too cold and they don’t like to be too hot. Achieving this equilibrium creates a problem for manufacturers working on...
  • A major theme, common to a number of manufacturers, at this year’s Geneva Motor Show was the continuing popularity of halo performance editions. Cars like the Ford GT supercar, Ford Focus RS,...
  • Emission regulations are changing in a way that is going to have huge impact on car manufacturers. The Worldwide harmonized Light vehicle Test Procedures (WLTP) are scheduled to replace the current...
  •   Companies using cloud technology are accessing software that they previously did not have the bandwidth to support. Teams that are collaborating on common data in the cloud are gaining...
  • A-pillars used to be a simple strip of metal holding up the roof and providing a fixing point for the windscreen. Now they’ve become one of the most fiercely contested battlegrounds in the...