The professor mentioned a benefit of Eulerian formulations being that you don’t need to have an explicit shape which is the case with the fluid water. But how does this work with sand (which the Prof also said can be modeled as a fluid in a previous slide) which does have a shape that it reverts to (despite being very small grains)?
l-winston
One interesting thing about the Eulerian specification is the concept of "particle image velocimetry" (PIV), which is a flow visualization technique that can be used to obtain instantaneous velocity and other measurements in fluids
mooreyeel
what about viscous fluids that hold onto each other? I know they don't remember their shape but they bond together, and thicker liquids can create ribons when you disturb them or even peaks
ncastaneda02
To add onto the comments about sand and viscous fluids, sand doesn't have a shape it reverts to in the sense that it has a specific "steady state" shape like a solid. You can really just think of sand as a particle model of fluid like in the previous lecture, but with much larger particle size. With regards to viscosity, you can simulate this by just checking locations within some radius around each location to see if there is material there, and then do some fancy physics calculations.
joeyzhao123
https://www.youtube.com/watch?v=qsYE1wMEMPA
Here's a nice video I found explaining some stuff!
The professor mentioned a benefit of Eulerian formulations being that you don’t need to have an explicit shape which is the case with the fluid water. But how does this work with sand (which the Prof also said can be modeled as a fluid in a previous slide) which does have a shape that it reverts to (despite being very small grains)?
One interesting thing about the Eulerian specification is the concept of "particle image velocimetry" (PIV), which is a flow visualization technique that can be used to obtain instantaneous velocity and other measurements in fluids
what about viscous fluids that hold onto each other? I know they don't remember their shape but they bond together, and thicker liquids can create ribons when you disturb them or even peaks
To add onto the comments about sand and viscous fluids, sand doesn't have a shape it reverts to in the sense that it has a specific "steady state" shape like a solid. You can really just think of sand as a particle model of fluid like in the previous lecture, but with much larger particle size. With regards to viscosity, you can simulate this by just checking locations within some radius around each location to see if there is material there, and then do some fancy physics calculations.
https://www.youtube.com/watch?v=qsYE1wMEMPA
Here's a nice video I found explaining some stuff!