Improving Your Vehicle Experience with Advanced Simulation


Aerodynamics are key attributes in new cars. Airflow over a vehicle is critical to gas mileage, can produce annoying wind “buffeting “and affects the vehicle’s quality and success in the market in many other ways. As with all other design features, auto companies want to use HPC simulations to predict aerodynamic performance. However, most automobile designs are not particularly aerodynamic, so airflow is very complicated and difficult to simulate accurately. Cray and ANSYS recently published an applications brief on an aeroacoustics (wind noise) simulation on an Alfa Romeo Giulietta automobile. It’s a very interesting example for many reasons, including: It demonstrated the technical partnership between Cray and ANSYS. It was a ... [ Read More ]

MSC Nastran NVH benchmarks show 1.6X speedup


The MSC Nastran application is almost 50 year old, but it continues to receive enhancements, and we at Cray continue to see significant performance improvements when MSC Nastran is run on the latest Cray® CS400™ cluster supercomputer systems. MSC Nastran is one of the most widely used structural analysis applications in the Automotive and Aerospace industries. Notably, it is widely used for large, linear dynamic analysis such as vehicle vibration simulation.  MSC Software recently posted the performance results for the latest version — MSC Nastran 2014. The results proved to be interesting for several reasons, but we were especially pleased to see that our results for the noise vibration and harshness (NVH) simulations were the best MSC ... [ Read More ]

Oktoberfest: Prost! to Beer and Big Data


Bavarian culture has spread its wings and has influenced the world with its beer-drinking tradition. Oktoberfest, a more than 200-year-old celebration that began in Munich, Germany, is still well under way. These days, Oktoberfest is celebrated not only in Bavaria, but also around the globe in places such as London and Dublin and many cities in the United States. As an enthusiast of both beer and data, I find myself thinking about how even beer production and marketing relate to big data. Even in the world of Oktoberfest, there is a massive amount of information to be mined, analyzed and put to use. Questions such as “What types beer are sold the most?” and “Depending on the time, day, place and weather, which areas host the heaviest ... [ Read More ]

Recent Crash Test Results Highlight the Need for Enhanced Simulation

IIHS small crash

In July the Insurance Institute for Highway Safety (IIHS) published crash test results for the “small overlap front crash test,” in which only one of the 12 cars tested earned a “good” rating.  These results, combined with the results of earlier tests, led Consumer Reports to publish a headline reading, “Most Small Cars Bomb New Small-Overlap Crash Test.” At the same time, Nissan presented an excellent paper on the computer simulation challenges of the small overlap test. This is an example of the increasingly stringent requirements for automotive safety and why the use of high performance computing (HPC) for crash safety simulation is critical in the automotive design process. There are dozens of crash load cases evaluated in the ... [ Read More ]

Unconventional Ways Supercomputers are Used: Part 2


We talk a lot about how high performance computing systems are on the forefront of science, but it's also fun to take a step back and look at some of the more unusual ways that supercomputers are impacting our lives. In a previous post, I discussed how supercomputing systems are being used in everything from ice cream physics to baseball and dirty diapers. Now we're back with part two of our series on unconventional uses of supercomputers. The Lord of the Rings Considering this movie’s high-flying, detailed special effects, I'm not surprised the director, Peter Jackson, turned to supercomputing to help create these lifelike experiences. To make the weather, buildings and vegetation accurate enough to turn J.R.R. Tolkien's Middle Earth ... [ Read More ]