Richard Smith's blog

CFD Analysis of a Homemade Cyclone

Hot on the heels of my recent Computational Fluid Dynamics (CFD) analysis of the blower for Matthias Wandel's "Small Dust Collector" comes a new CFD study of his cyclone. Cyclones are used in many industries to separate fluids from particles. In Matthias' case he wanted to separate sawdust and wood shavings from air collected from the working area of various woodworking machines.

CFD Simulation of a Dust Collector CycloneCFD Simulation of a Dust Collector CycloneStreamlines

CFD Analysis of a Blower for a Small Dust Collector

I recently came across an interesting fluid dynamics project modestly titled "Small Dust Collector" by Matthias Wandel of Woodgears. The unusual twist - at least from my metal-orientated view of the world - was the use of wood as the primary construction material. The project includes the construction of a blower, cyclone, filter housing, and filter manifold - all prime candidates for Computational Fluid Dynamics (CFD) simulations. I sense a series of blog posts, so first let's take a look at the blower also known as a centrifugal fan or squirrel cage fan.

CFD Simulation of a BlowerCFD Simulation of a Blower

Fluid Device Design is Like Herding Cats So Let CFD Help

Where the action of a fluid is the primary concern in the design of a device, e.g., a cyclone, sometimes it can seem that fluid is going out of its way to be difficult - a lot like trying to herd cats. Fluid device designers have to carefully match geometry to flow rates to meet performance criteria. However, if they were to rely solely on physical testing, then their task is that much harder and more costly because they can't easily visualize the flow behavior. Let Computational Fluid Dynamics (CFD) save you money and time as a supplement to physical testing.

CFD Simulation of a CycloneCFD Simulation of a CycloneVelocity iso-surfaces within the flow volume

Reduced Complexity 3D Models for CFD

Reduced complexity 3D model for Computational Fluid Dynamics (CFD) is a great way to avoid getting bogged down in details that are not relevant for a simulation. 3D video games and 3D animation applications have been using reduced complexity 3D models combined with texture maps to present rich visuals since the dawn of the digital age. These models and the concepts to build them can be extremely useful for CFD.

CFD Simulation of the Massachusetts State HouseCFD Simulation of the Massachusetts State HouseStreamlines colored by velocity magnitude

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

7 Ideas For Your Year Ahead in CFD

2015 is here, but before we leave last year in the dust let's take a moment to review the 2014 blog posts that can make this year your best yet in Computational Fluid Dynamics (CFD).

External CFD Flow VolumeExternal CFD Flow VolumeSubstance (air) modeled outside the car. Half model due to symmetry.

CFD Doodle: Multiple Interconnected Snow Globes

It's not just Google that can doodle. The Computational Fluid Dynamics (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?

Multiple Interconnected Snow Globes Flow Animation

Not All CFD GUIs Are Created Equal

Given the adoption and success of modern GUIs across a broad range of software, you'd think that making the case for one would be redundant. However, for some reason Computational Fluid Dynamics (CFD) was a late adopter of GUIs, and for what is predominantly a visual set of disciplines - think geometry, mesh, solver feedback, 3D visualization, and 2D plots. This late adoption is still evident in CFD software today.

Modern CFD GUI: Caedium ProfessionalModern CFD GUI: Caedium Professional

Top 5 Reasons Why You Should Try CFD

There are many reasons why Computational Fluid Dynamics (CFD) has become a mainstay of most engineering endeavors that have a fluid flow element, but here are my top 5.

CFD Software in Action: Caedium ProfessionalCFD Software in Action: Caedium Professional

Heroic Aircraft Design Aided by Caedium CFD

Niklas Wendel and Julia Gundert, students at Thomas-Morus-Gymnasium, Daun, Germany, recently completed a project to envisage an airliner of the future with a focus on sustainability and fuel efficiency. Their project was named HELT, translated as a German acronym for 'High Efficiency Aircraft', and is also similar to the German word 'held' which translates to 'hero' in English. During their early concept design phase they used Caedium Professional to perform Computational Fluid Dynamics (CFD) simulations to evaluate the aerodynamic efficiency of various configurations before selecting their final Blended Wing-Body (BWB) design.

HELT TeamHELT TeamNiklas Wendel and Julia Gundert

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