Submitted by Richard Smith on November 19, 2012 - 15:50
If you are into fluid dynamics then you have a real treat in store over the next couple of days. The American Physical Society's (APS) Division of Fluid Dynamics (DFD) meeting is underway in San Diego and runs November 19-20, 2012. For a taster of the eagerly anticipated presentations here's a brief selection ranging from huddling penguins to knuckleball soccer kicks.
Submitted by Richard Smith on November 13, 2012 - 10:49
Another news blast, this time with an aerodynamics theme. Read on to discover how trucks can be more efficient, how racecars and bikes can go faster, and how to make a stunning McLaren ad. Hint - it's all down to aerodynamics.
Making of an Aerodynamics Themed McLaren AdScroll to the bottom of the page to see the finished ad
Submitted by Richard Smith on November 6, 2012 - 12:39
It seems that analogies between fluid flow and other physical processes continue to proliferate. Add to that list the analogy between a hydraulic jump (think smooth-shallow to rough-deep transition in a sink under a running tap) to a white hole (think black hole running backwards in time). Physicists at the University of Nice Sophia Antipolis, France recently showed through "...an experimental demonstration that the circular hydraulic jump represents a hydrodynamic white hole...".
Submitted by Richard Smith on October 29, 2012 - 11:17
Browsing through the news today I can across an interesting array of fluid dynamics related stories that I thought I'd share. So if you want to see how the Williams F1 team uses CFD and wind tunnels, or why a half-full (or is it half-empty?) bottle of water breaks when you hit it in a certain way (clue: cavitation), or how to make nanoballs (clue: bristles), and more, check out the links below.
Submitted by Richard Smith on October 17, 2012 - 13:01
I think everyone is well aware of the link between tsunamis and earthquakes after the devastation wreaked in recent years on Japan and Indonesia. However, there is a lesser known water wave called a seiche that is limited to semi-enclosed and fully-enclosed bodies of water, such as lakes, bays, swimming pools, and even puddles. I went searching for links between earthquakes and fluid dynamics after I experienced a minor earthquake (4.0 magnitude) here in New England.
Submitted by Richard Smith on September 24, 2012 - 18:52
What if you could change the shape of a tensile structure according to the natural loads, such as wind forces, it experiences? In exploring this question researchers at the University of Stuttgart and the company Bosch Rexroth came up with a tensile canopy (membrane) - nothing new there. However, their novel design uses a feedback system driven by a sensor array connected to hydraulic rams that apply counter forces to natural loads.
Morphing Tensile CanopyImage courtesy of Bosch Rexroth
Submitted by Richard Smith on August 30, 2012 - 12:50
If you are a ketchup manufacturer then maintaining your ketchup at the right consistency is a primary concern - same goes for ketchup connoisseurs. A new procedure developed by Bandulasena, et al at the University of Sheffield combines a simple experimental observation and Computational Fluid Dynamics (CFD) to characterize the viscosity of a non-Newtonian fluid, such as ketchup, so we can be confident that our ketchup will flow.
Caedium Free Surface CFD Simulation for a Non-Newtonian Fluid