Submitted by Richard Smith on December 1, 2016 - 10:05
Some fluid dynamics is intuitive, e.g., the water flow along a pipe, where what goes in one end comes out the other. However, most applications no matter how simple are anything but intuitive, e.g., the drag of a ball moving through air.
CFD Simulation of Flow Around a SphereHighly sensitive to Reynolds Number
Submitted by Richard Smith on November 23, 2016 - 17:47
Most Computational Fluid Dynamics (CFD) software provides an array of turbulence models. Knowing which model to select is not always an easy decision given trade offs between accuracy and computing requirements.
Turbulent Air Flow Behind a TruckGeometry courtesy of Nectar Design
Submitted by Richard Smith on November 3, 2016 - 10:22
If you followed Formula 1 in 2009 and 2010 you will probably recall the terms double diffuser and F-duct. However, unless you were in the aerodynamics department of an F1 team during that period you will probably only have a sketchy idea of how these devices actually produced the elusive, race-winning, downforce that is key to F1 success.
Submitted by Richard Smith on October 27, 2016 - 15:19
Time for some fluid dynamics news with a Computational Fluid Dynamics (CFD) slant. Check out how CFD was used to make hydraulic capsule pipeline predictions and simulate the flow through fish farming sea cages.
Submitted by Richard Smith on October 6, 2016 - 15:08
Symmetry is a simple but powerful concept that you can use to speed up your Computational Fluid Dynamics (CFD) simulations and reduce your memory requirements. Join me in an exploration of a simple symmetry case.
CFD Simulation of a Symmetric Quarter ModelVelocity vectors
Submitted by Richard Smith on September 2, 2016 - 08:15
Pareto analysis usually reveals a golden 80-20 rule for squeezing performance out of things. In other words - it means the majority of the performance (80%) is typically governed by a minority (20%) of factors. Pareto analysis applies equally across many disciplines from sports (marginal gains anyone?) to product design.
Submitted by Richard Smith on August 23, 2016 - 14:15
Don't settle for Computational Fluid Dynamics (CFD) software that uses (abuses) facets (e.g., STL) as geometry. If your original geometry is analytic (CAD) then mesh it directly without the conversion to facets. Otherwise it's like you have to create two surface meshes. What's wrong with that? Plenty!
Blocky Structures Are Not The NormDartmouth clock tower undergoing renovation aided by blocky scaffolding