Submitted by Richard Smith on July 16, 2012 - 12:41
Exercise is a crucial ingredient for astronauts to maintain some semblance of their physiological well being and if you can combine that with exposure to artificial gravity then all the better. Enter the Human Powered Centrifuge (HPC), possibly destined for the International Space Station (ISS). It's an un-stationary bicycle that when pedaled spins around generating artificial gravity. Problem solved, right? Not so fast - nothing in space is that easy. When exercising, astronauts generate up to two times more carbon dioxide (CO2) than when relaxing and that level of CO2 could potentially cause problems for the sensitive ISS life support system. What to do? CFD to the rescue.
You will be able to simulate flow through packed beds and filters in the next release of the Caedium CFD software system. Caedium will support Porous Media using Darcy's Law for volumes and double-sided faces.
Submitted by Richard Smith on July 3, 2012 - 13:16
Say you've been tasked with designing a new water pleasure craft optimized for speed called the Slickjet (fictional name). You ask the fundamental question - how do you travel fast through water? Easy, get as much of your Slickjet out of the water as you can. You know that the drag force acting on a totally submerged shape in water will be about 1000 times higher than for the same shape in air - the drag force scales according to the density of the fluid and water is 1000 times denser than air. Of course this assumes you are willing to get FAA approval for an aircraft rather than a boat. However, there is an alternative in that if you can somehow cocoon parts of your Slickjet in an air bubble as it moves through the water then you can convince the physics that those parts of your Slickjet are moving through air rather than water. This process is known as super cavitation and results in the drag forces acting on those parts of your Slickjet being more like those encountered in air rather than water.
You will be able to simulate rotating wind turbines and mixers with the next release of the Caedium CFD software system. Caedium will support Moving Reference Frames (MRF), which is an efficient way to simulate rotating machinery.
Submitted by Richard Smith on June 7, 2012 - 13:33
Cycling is one of the fastest sports in the Olympics. With that speed comes an increased importance on aerodynamics. In cycling the aerodynamic design is focused on minimizing drag. However, as with swimming, there are carefully crafted rules that ensure there is only a narrow scope for aerodynamic optimization to gain a competitive advantage.
Submitted by Richard Smith on May 22, 2012 - 08:45
A big draw of any Olympics is the track and field (athletics) events and no less so in London. What effect is the application of fluid technology to these events likely to have? If past Olympics are anything to go by - not much!