Richard Smith's blog

CFD Expertise Is Your Modern Day Pick and Shovel

News just in from Bloomberg is that Larry Page, of Google fame, is funding not one (Zee.Aero) but two (Kitty Hawk) personalized flying-machine (dare I say flying cars?) startups. With a number of other companies pursuing the same goal, it seems a gold rush of sorts is on. Yet remember the real gold rush? The real benefactors were the pick and shovel makers. The equivalent in this flight to the future are employees with highly prized skills brought to bear on a decidedly tricky problem. And at the sharp end of those with specialized skills are...Computational Fluid Dynamics (CFD) experts - providing valuable insights into aerodynamics, propulsion, batteries, and electrical/electronics cooling.

Fig. 1 from Zee.Aero Patent Filing For A 'Personal Aircraft'Patent US20130214086

CFD Benefits From 3D Printing

It turns out that preparing geometry models for 3D printing has a lot of similarities with preparing geometry for Computational Fluid Dynamics (CFD). Both require watertight non-manifold geometry, otherwise your model will plunge your 3D printer or your CFD software into chaos.

Airflow CFD Simulation Around the Smithsonian Air and Space MuseumAirflow CFD Simulation Around the Smithsonian Air and Space MuseumStreamlines

Cutting Planes Reveal Yet More Hidden CFD Secrets

Yet another way to reveal the hidden secrets of your Computational Fluid Dynamics (CFD) simulation is to create a face, usually a plane and often referred to as a cutting plane, to serve as a target for interpolated results.

HVAC CFD Simulation of a RoomHVAC CFD Simulation of a RoomVelocity vectors on two cutting planes

Clipping Planes Reveal Even More Hidden CFD Secrets

Clipping planes are another tool to reveal hidden regions of your Computational Fluid Dynamics (CFD) results.

CFD Simulation of an Air MultiplierCFD Simulation of an Air MultiplierVelocity iso-surfaces after using XYZ-clipping planes

Symmetry Reveals More Hidden CFD Secrets

Following on from "Transparency Reveals Hidden CFD Secrets," using symmetry is another way to reveal the hidden secrets of your Computational Fluid Dynamics (CFD) simulations.

CFD Simulation of Airflow Around a CarCFD Simulation of Airflow Around a CarVelocity contours on symmetry plane

No Colorful Fluid Dynamic Paint Yet

I'm sure you realized that the post on Colorful Fluid Dynamic Paint published on April Fools' Day was more than a coincidence. Full confession - Colorful Fluid Dynamic Paint is fake. However, if we ever do get something like it, I'll be first in line to try it!

CFD Simulation of Air Speed Surface ContoursCFD Simulation of Air Speed Surface Contours

Colorful Fluid Dynamic Paint

Forget having a single paint color for your next vehicle purchase and instead go with Colorful Fluid Dynamic paint that changes color according to the airflow around your vehicle. Once only the domain of wind tunnels, pressure sensitive paint and the newly available air speed paint can produce stunning dynamic surface contours as you drive.

Colorful Fluid Dynamic Paint for Air SpeedColorful Fluid Dynamic Paint for Air Speed

Transparency Reveals Hidden CFD Secrets

Do you find that visual elements in your Computational Fluid Dynamics (CFD) simulations sometimes obscure the areas where you would like to see your results? If so, then let transparency reveal the hidden secrets within your results.

CFD Simulation Results Revealed by TransparencyCFD Simulation Results Revealed by Transparency

Challenging Orthodox Truck Design

While marginal gains are all the rage in cycling, US trucks by comparison are a target rich environment when it comes to external aerodynamics. Specifically the name of the game in haulage is to minimize fuel costs and that translates directly to minimizing drag.

CFD Simulation of the Airflow Around a Traditional US TruckCFD Simulation of the Airflow Around a Traditional US TruckGeometry courtesy of Nectar Design

Caedium CFD Sneak Peek: Conjugate Heat Transfer

The next release of the Caedium CFD software system will be able to simulate Conjugate Heat Transfer (CHT). CHT models the heat transfer due to conduction through a solid or shell, coupled with fluid convection at shared boundaries.

Conjugate Heat Transfer for a Heat ExchangerConjugate Heat Transfer for a Heat ExchangerVelocity Vectors Colored by Water Temperature

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