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Designing Quieter Vehicles by Implementing a Digital Wind Noise Solution during Development
Jan 17, 2018
By Sivapalan Senthooran Excessive wind noise inside the cabin has been one of the top customer complaints in studies of initial vehicle quality over the last decade. OEMs are continuously trying...
Aerodynamic performance assessments using realistic wind conditions
Nov 16, 2016
For a typical car driving at highway speeds, about 50% of the energy is spent to overcome the aerodynamic drag and the other 50% is required to overcome the mechanical losses (engine, transmission,...
Aerodynamics in Formula E
Nov 01, 2016
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...
How to Keep Your Vehicle Brain Cool on a Hot Summer Day
Oct 06, 2016
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...
The Limitations of Physical Prototyping
Sep 30, 2016
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...
Taking a ride down Champs É-lysées
Sep 21, 2016
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...
Considering light-weighting your brakes? Read this first.
Aug 29, 2016
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...
Plummeting computer costs boost simulation
Jul 29, 2016
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...
Reflections on the end of automotive mirrors
Jul 18, 2016
A report in Automotive News states that Japan has become the first market to allow cameras in place of mirrors. Companies such as Robert Bosch and Japan’s Ichikoh Industries are already...
What is the real truth behind portable emissions testing?
Jun 28, 2016
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...
Future trucks: highly charged and aerodynamic
Jun 12, 2016
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...
Design Optimization: Exa's Automated Approach to Finding Your Best Design Through Simulation
Jun 02, 2016
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...
The importance of real-world simulation
May 19, 2016
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...
Time to stop hero-worshipping the wind tunnel
May 02, 2016
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...
The real-world problem with emissions tests
Apr 12, 2016
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...
Synergy through simulation
Mar 29, 2016
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...
Fuel Economy : Keep it Real
Mar 28, 2016
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...
The Importance of Integrated Design Simulation and Visualization Tools
Mar 10, 2016
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...
Super Bowl 50: unrealized aero potential
Feb 10, 2016
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’s winning edge
Feb 01, 2016
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...
Simulating Ever Changing Road Conditions with Exa PowerFLOW
Jan 29, 2016
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...
Why physical testing of vehicles will never be sufficient
Jan 21, 2016
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...
How to Meet Fuel Economy Targets: OEMs and Suppliers Find Success Collaborating and Optimizing Designs Using Simulation
Jan 14, 2016
Exa’s Doug Hatfield discusses how commercial truck and automotive OEMs collaborate with their suppliers to optimize vehicle designs using simulation. With truck fleets seeking ever-...
Don't let NVH Issues Ruin a Roof-down Cruise
Dec 02, 2015
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...
Cut down grime with more digital time
Nov 12, 2015
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...
Caught up in the turbulence
Nov 06, 2015
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...
Physical Testing Cannot Provide Engineers the "Why"
Oct 30, 2015
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...
Fresh perspectives on automotive design
Oct 21, 2015
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...
Tesla Model X: the SUV uncompromised?
Sep 30, 2015
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...
Catering for local car tastes can be an expensive business
Sep 14, 2015
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...
Death of the Old Global Car, Birth of a New One
Aug 20, 2015
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....
Why aerodynamic optimization needn’t be a drag
Aug 18, 2015
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...
Where have all the convertibles gone?
Jul 31, 2015
Not so long ago summer would have triggered an annual boom in convertible sales across Europe. But the region has fallen out of love with the drop-top, and numbers have almost halved since 2003....
The Automobile Micro-Climate
Jul 07, 2015
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 (...
How Simulation Can Help the Lords of the 'Ring
Jun 25, 2015
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...
Accelerating Race Car Design Through CFD Simulations
Jun 03, 2015
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...
How Autonomous Vehicle Technology is Impacted by Aerodynamics
May 18, 2015
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...
Exa reshaping the lightweight material debate
May 01, 2015
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...
2015 Geneva Motor Show: Where functional Aerodynamics met Beautiful Design
Mar 11, 2015
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,...
The Cloud Democratizes Simulation- Driven Design
Feb 13, 2015
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...
The Battle for the A-pillar
Feb 10, 2015
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...
Good Times for Now...but what's next?
Jul 03, 2014
Recently, the Wall Street Journal described the good times the auto industry is having in 2014. 16M units? That's really gonna be sumthin'. Remember 2009? The restructuring?...
Drag Queens: Blowin' in the Wind
Jun 24, 2014
You know that old saying, "Close but no cigar?" That's how we felt after reading Car & Driver's first-ever aerodynamic "comparo." (You just gotta love the...
Bad Design is Such a Drag
Jun 24, 2014
Recently, Volkswagen's design boss, Walter De Silva, talked about some of the unfortunate choices that fuel economy requirements impose on design in an interview with Automotive...
Why am I Writing This Blog?
Jun 24, 2014
I have always been passionate about cars and car design ....but at my core I am an engineer and it is in my nature to solve problems; to fix what's broken, to care about the process and to...