Tomorrow, December 6, is an important day for many because it’s the final draw that will deliver the verdict on the eight football (soccer) groups that will kick off the 2014 FIFA World Cup — one of the most popular sporting events in the world, surpassed only by the Olympic Games. The 2014 World Cup will take place in Brazil from June 12 to July 1. This year will be special for me because, for the first time since 2002, Belgium has qualified. The team from Belgium includes a large number of players from prestigious European championships, so we have a fair chance to go quite far in the competition.
Whether the Belgian team will be a tough competitor or an easy seed could influence the rest of the World Cup. Unfortunately, it is very unlikely I will be able to support our Belgian Red Devils in person in Brazil next summer. But I’ll feel a part of the event thanks to the remarkable work done under the auspices of NOVACAP, Maruska Holanda and Pedro Almeida performed by Prof. Paulo de Mattos Pimenta and ESSS, the ANSYS channel partner in South America.
The Stadium That Will Host the 2014 World Cup
The National Stadium of Brasilia Mane Garrincha
Because a stadium is usually considered a prestigious landmark that is expected to last for decades, the quality of the design is crucial. The stadium must be able to withstand any situation it might experience during its lifetime such as heavy wind or cheering crowds. Continue reading
When I came from Microsoft to join ANSYS in April, I knew that ANSYS had been offering industry-leading engineering simulation software for more than four decades. But what I did not know was the amount of innovation and product technology that the company had lined up to deliver this year — and over the next several years. As a result of the work I’ve done with product development teams, I have grown even more passionate about ANSYS and what it has to offer the industry. I am, therefore, as proud as the rest of the team in announcing the release of our new product suite. ANSYS 15.0 builds upon the many years of leadership and includes dramatic upgrades in each of the key physics areas (electromagnetics, fluid dynamics, structures and embedded code). The combination of performance improvements, new solver capabilities, HPC scalability advances and pre-processing enhancements delivers insights into the most challenging product designs.
Because manmade materials are everywhere, ANSYS 15.0 provides structural analysts with advanced new functionality for simulating composites. What I find very exciting is the innovation built in to ensure efficiency throughout the entire modeling process. For example, users can apply submodeling techniques in the pre-processing workflow to create high-fidelity local results while employing a coarser model globally to reduce overall computation time. Continue reading
If you are a regular reader of this blog, you may remember the post I wrote about witnessing simulation in action at the endurance race in Austin, TX. Since that great experience, I have been following the 2013 FIA World Endurance Championship in general, and the AF Corse team in particular (the AF Corse team races with Ferrari F458 cars). There is only one race left — the 6 Hours Endurance of Bahrain (Kingdom of Bahrain).
AF Corse won the 2012 FIA World Endurance Championship and is currently second in the 2013 season, just 8.5 points behind the leader. I will be following the next race on November 30th and be cheering for the team!
You may wonder, why? Am I an automotive sports enthusiast? Not really. Do I love the Ferrari F458 because I own one? Definitely not (not even on lease!). I am following the races and the Ferrari team because I am amazed at how they used CFD simulation to design the Ferrari F458. Now, we all know about using CFD for aerodynamic, engine cooling, etc. But something that amazed me is how they used CFD simulation to design the side rear view mirror. You may be thinking, of all the components, this one does not look very important for the aerodynamic of the car, so what is cool about that? Here is the story. Continue reading
In a past blog, I discussed gasification as a clean coal technology (CCT). Today, my discussion is about oxy-fuel combustion as another clean way of burning fuels. CFD is widely used to design oxy-fuel combustion systems that burn as cleanly as possible. One of the most important decision when simulating such systems is to choose the modeling strategy that will give accurate and reliable predictions of the combustion performance and pollutant emissions levels. In oxy-fuel combustion, the oxygen required for combustion is separated out from air prior to combustion. Fuel is burned in either an oxygen-rich (~95% oxygen) environment, as in welding and cutting of metals where higher flame temperature is required, or diluted with recycled flue-gas, as in pulverized coal-fired boilers.
Oxy-fuel combustion using pulverized coal as fuel with flue-gas recirculation is gaining popularity in electricity-generation application. This is due to the fact that flue-gas contains mainly carbon dioxide after condensing the water vapor, and it is, therefore, a good candidate for CO2-capture-and-sequestration. Since these types of power plants have lower NOx emission — nitrogen from the air stream is absent — an optimized oxy-combustion power plant has lower overall emissions. Continue reading
When I first encountered adjoint methods as a post-doctoral researcher at NASA, I could see that there was enormous potential in this approach. It was only after joining Fluent, and subsequently ANSYS, that the time was right to develop an adjoint solver for anyone using simulation, not just for those using in-house codes. Given that there were many, many users of ANSYS computational fluid dynamics simulation tools, there was a clear opportunity to deploy this technology globally and impact the design process positively for a lot of organizations. This compelled our adjoint solver project team to overcome some of the significant technical challenges in developing this technology. It was a tough road, but the results have made it all worthwhile.
In this example, the adjoint solver indicates how to modify the shape of this Formula 1 aileron to generate maximum down force.
The adjoint solver calculates sensitivity information for a fluid system. The flow problem is solved in the usual manner. Then the user selects some measure of performance of the system as being of particular interest. The drag or downforce on a car and pressure drop in an internal flow system are common examples. The adjoint solver is run in a manner quite similar to the flow solver. A wide variety of sensitivity data is generated, including the sensitivity of the result of interest to the geometric shape of the system. For many people this type of result needs to be seen to be believed, at which point disbelief turns to delight. Continue reading
If you have been using ANSYS Fluent for a while, you must have heard of the effectiveness of User Defined Functions or might have used one to enhance your simulation. This is where the real power of the software is. User defined functions (UDF) allow you to modify the behavior of ANSYS Fluent to satisfy your particular modeling needs. For example, these modifications may be used to impose desired initial and boundary, material models as well as various physical and chemical transformations such as heat transfer, chemical reactions or phase change. UDFs are flexible and powerful, and allow you to use ANSYS Fluent as a framework to implement new models.
The process of writing these functions is well laid out in the documentation; yet it still requires careful attention and proper coding protocols to produce the maximum benefit. To this end, we have gathered a team of senior engineers who will present webinars on how to effectively write UDF’s to address specific needs. Continue reading
Central and southern Europe experienced quite a nice, hot summer throughout this past year with temperatures above 35°C. It was perfect when being on vacation close to a lake, a river or the sea. At the same time, this can cause sleepless nights, when temperatures do not fall significantly in the evening. Thus everybody is quite happy about the cooler air that is wafting through the open window at night.
Spending the summer close to the water comes along with annoying mosquitoes, which can cause sleepless and itchy nights. Most people have equipped their houses with flyscreens so they can keep the windows open at night.
During my vacation in Italy this summer, I was experiencing a sleepless night with temperatures above 30°C. Thinking about possible workarounds brought the flyscreen to mind. As I have been working on fluid mechanics for about 15 years now, I was wondering how much the screen influences the amount of air entering the room through the open window.
During the last few weeks, I had the opportunity of a lifetime to witness two competitive sport clients race with machines that were developed using ANSYS fluid dynamics engineering simulation tools. I can guarantee you that I was like a kid in candy store!
In September, I was on vacation in San Francisco to see the America’s Cup and had the chance to see Emirates Team New Zealand race. As you might recall, they won the Louis Vuitton Cup — but unfortunately not the America’s Cup. Even so, seeing those monsters race on the SF Bay was phenomenal. What a spectacle! Amazing sailing, impressive engineering.
These are just a couple of the photos I took at the event. One shows the boat after the race. I thought it was a cool picture because it showed how massive it is. The other shows the actual wing.
If you want to know more about the America’s Cup and fluid dynamics simulation, please listen to the designer team of Emirates Team New Zealand talk about it here. Continue reading