If it falls your lot to be a street sweeper, sweep streets like Michelangelo painted pictures, like Shakespeare wrote poetry, like Beethoven composed music; sweep streets so well that all the host of heaven and earth will have to pause and say, ‘Here lived a great street sweeper, who swept his job well.’
The use of numerical simulations in fluid dynamics has exploded over the past half century with new computational techniques being developed constantly. Most methods involve solving the equations of motion (or an approximation thereof) on a grid of points known as a mesh. To accurately capture the physics, meshes must often be quite closely packed in areas where detail is needed, but they can be more widely spaced in areas where the flow is not changing quickly. An increasingly common technique is adaptive meshing in which the mesh of grid points shifts between time steps; this places more grid points where the flow requires them and removes them from less important areas in order to reduce computational time.
An example of adaptive meshing is shown above. On the left particles are falling into salt water. The colors show the concentration of particles. The right side shows the solid particles and the fluid mesh around them. Notice how the grid shifts as the particles fall. (Image credit: C. Jacobs et al., source)
Thank you every one who’s ever interacted from the first gif set to this one. It’s difficult to calculate, but in total this blog was given over 500,000 notes in the year or so of active content creation, hitting a record high of 100,000 in a single month (most of the total are in the first year which was at least 90% of the techtonic activity)
July was an oddly busy month full of family time, catching up with friends, and work assignments. Not necessarily a bad thing but I did find myself in a weird funk for not being able to get back to this quickly. With that said I’m trying out a new strategy that I have to credit to @gregorydarroll. Each month will be dedicated to one unique style of illustration or animation. The purpose is to learn a new technique and really develop a deeper understanding of the tools I’ll use to accomplish this. For the rest of August, I’ll be creating simple line art animations using my Wacom tablet, Photoshop, Illustrator, and After Effects.