The art of engineering can often be in finding pragmatic ways to use technology to solve real problems. While simulations may include an ever-increasing amount of geometric detail, it is not enough to simply generate ever finer meshes and use ever smaller time resolution. Simulations must still be solved in a reasonable time (and perhaps the one constant here has been that reasonable almost always means ‘overnight’). Therefore, until there is a dramatic breakthrough in computing power, modeling fluid flow will require engineering pragmatism in problem-solving for many years to come. But that need not be shouldered by the CFD engineer alone — ANSYS simulation software can support them in their efforts. ANSYS 15.0 contains multiple examples of how pragmatic approaches to efficient and effective simulation are contained in the software itself.
One such example is the dynamic combustion mechanism reduction capability in ANSYS Fluent. By automatically reducing the mechanisms to only the most important, dramatic reductions in simulation time can be achieved without the CFD engineer having to spend time and effort determining how to represent complex reaction mechanism in a simplified manner that models the behaviour sufficiently well. Instead, this pragmatism is built into the ANSYS software! Combined with further enhancements in ANSYS 15.0, it makes combustion simulation with even the most involved chemical reactions viable. Continue reading
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
Courtesy Emirates Team New Zealand
ANSYS congratulates Emirates Team New Zealand for winning the Louis Vuitton Cup for the second time!
Never heard of the Louis Vuitton Cup sailing race? You may have heard of the America’s Cup, the oldest active trophy in international sport. If you haven’t, the America’s Cup is a sailing race where a challenger yacht races one-to-one against the current holder of the America’s Cup. The challenger team has earns this position by winning the Louis Vuitton Cup. Continue reading
Coal will remain the key fuel for electricity generation in the near future, despite its major contribution to the greenhouse effect. That was the key takeaway from the 38th International Technical Conference on Clean Coal and Fuel Systems, which concluded recently in Clearwater, Florida, U.S.A. A large focus of the event was to provide information about the cleaner use of coal now and in the future.
That message was expected, given that there has been a concentrated effort by many researchers and engineers to make energy from coal as clean as possible. It was interesting to hear one of the speakers directly couple the economic growth of a country with its use of coal.
The five-day conference provided comprehensive and up-to-date information on emerging, evolving and innovative technologies, fuels and policies in the power generation industry. Information and discussions during the conference help industrialists, academicians, researchers, and technology and equipment suppliers to plan their strategies for cleaner use of coal to mitigate environmental concerns in the 21st century. Continue reading
At the end of February, I blogged about how I had the pleasure of talking with Desktop Engineering magazine’s senior editor Kenneth Wong via podcast. He had a simple challenge for me: For a structural engineer who is just beginning to work with fluid dynamics, outline the points important to CFD flow simulation. He also asked me to explain how to avoid pitfalls when setting up the simulation and what to look for when analyzing the results.
That podcast focused on the simulation setup. More recently I met again with Kenneth, and this time he wanted information about how to run the simulation and analyze the results to extract key engineering information.
Remember, we are looking at a ball valve design. In this design, the flow pushes on the valve when it is partially open, which could deform or move the valve enough to make it leak. The analysis simulates flow behavior inside the valve to determine whether or not the valve leaks.
First we focus on how to ensure that the solution process has gone the way it should. Continue reading
Happy Friday, folks! This week, Spiderman makes an appearance in our most interesting engineering technology news articles and SpaceX makes history for the 2nd time as they launch the Falcon 9 and Dragon capsule into space to resupply the International Space Station again.
A couple of weeks ago, I had the pleasure of conversing with Desktop Engineering magazine’s senior editor Kenneth Wong for a podcast recording. He had a simple challenge for me: For a structural engineer who is just beginning to work with fluid dynamics, outline the points important to CFD flow simulation. Additionally, he asked me to explain how to avoid pitfalls when setting up the simulation and what to look for when analyzing the results.
My first thought was that, well, there are great classes, training and free YouTube videos available. Give me a couple of hours and I can turn a structural-expert-but-CFD-newbie into a CFD user. Kenneth understood all this, but his biggest challenge was yet to come. He asked me quite seriously, “And can you get an engineer on the right track in a couple of minutes?”
*** Mission Impossible soundtrack playing inside my head **** Sure! Let’s do it!
Our existence depends on reactions. They are all around us. Driving to work, we convert the hydrocarbon fuel through a combustion reaction into water vapors and carbon dioxide. In the case where you have those fancy hybrids or electric cars, you still need that electrochemical reaction to take place to draw current and run the electric motor.
We breath air. The oxygen in air helps in burning the glucose in our body and provide us with energy. So, be it a very complicated engine or a biological system like humans, reactions are everywhere. Continue reading