2014: A Year in CFD Simulations

A fresh new year is a great excuse to share with you the Computational Fluid Dynamics (CFD) simulations collection that starred in various 2014 blog posts. They are all here, from Tower Bridge to airships.

CFD Simulation of Tower BridgeCFD Simulation of Tower Bridge

Tower Bridge Meets CFD

Complete, watertight, complex geometry is a rare but welcome find in CFD. However, thanks to the steering committee of the upcoming 23rd International Meshing Roundtable, such a geometry, in various formats, is freely available for their meshing contest. The star of the contest is London's Tower Bridge, I presume in honor of the conference's host city. So to the bat cave to see what Caedium Professional can do with this model. Read more >>

World Cup Stadium Aerodynamics with CFD

The 2014 FIFA World Cup is well underway and the final match to crown the world champions will be played in the Maracanã Stadium. The stadium was originally built to host the 1950 World Cup final, but with the stadium being the focal point for the current 2014 World Cup and the upcoming 2016 Olympics it was deemed that it needed a revamp. The most striking difference between the old and newly renovated stadium is the roof that now protects 95% of the seating from rain and provides better shade. The original roof only offered minimal rain protection and shade to a few rows of seats. However, it seems little air-time has been devoted to analyzing the wind characteristics of the playing area inside the stadium due to the different roof extents, especially when you consider how much attention the aerodynamics of the match ball have garnered. Rest easy though, CFD is here to help. Read more >>

How to Make a Splash in CFD

It is a common occurrence: a rain drop falls into a puddle; a leaky faucet drips into a sink of water. This seemingly simple event has some complex physics in play that advanced multi-phase, free-surface (volume of fluid - VOF) CFD can simulate. Not only can CFD simulate water impact in a pool, it can also produce a beautiful 3D visualization of the process as an animation. Follow along to see how you can use Caedium Professional to simulate a water droplet falling into a pool of water. Read more >>

Sports, Fluid Flow, and Spheres

Given how easy it is to define a sphere with a single value (radius) you'd think the fluid flow around a sphere would be simple too, right? However, as with many innocuous looking fluid problems, our intuition is wrong. The resulting flow characteristics, especially the drag variation with fluid velocity, are wild. Why does this matter? One word - sports. Read more >>

Laminar vs Turbulent Flow Over Airfoils

Which is more efficient: laminar or turbulent flow over an airfoil? Find out in this simple CFD study. Read more >>

CFD Doodle: Multiple Interconnected Snow Globes

It's not just Google that can doodle. The CFD community on occasion has also been known to embrace its whimsy side, especially during holidays, and so I give you a CFD doodle. For fluid dynamicists (or at least this one) the snow globe has always had a special attraction and if one is good then four has to be awesome, right? Read more >>

Airships Rising

Airships are enjoying a renaissance of sorts. Military forces have proposed airships for surveillance and heavy lift duties. A small number of impressive prototypes have already taken to the air, but little follow-on development seems imminent. Could this renaissance be just a bli(m)p? Read more >>