In the 'ain't computers amazing?' category, see a great simulation of moving fluids

[The_Traveler]

In the 'ain't computers amazing?' category, see a great simulation of moving fluids

 

[runnah]

makes me excited for video games.

Very cool.

 

[The_Traveler]

makes me excited for video games.

I will stick to women but to each his own.

 

[runnah]

I will stick to women but to each his own.

I've got more than enough if both.

 

[Big Mike]

That was pretty cool. I wonder if they can accurately simulate pressure and forces as well as just the cool visuals. I also wonder if they could easily tweak the fluid properties to simulate something other than water.

 

[o hey tyler]

That was pretty cool. I wonder if they can accurately simulate pressure and forces as well as just the cool visuals. I also wonder if they could easily tweak the fluid properties to simulate something other than water.

I am fairly confident that this accounts for pressure and displacement judging by the demo of the moving wave wall and the fish tank type thing that gets the glass shot out. But I could be wrong.

I would also imagine that the properties of the fluid can be adjusted, such as viscosity and mass via the programming end.

 

[amolitor]

I think the way you make these simulations go is in fact by simulating the pressure and forces.

Pretty much any non-compressible, Newtonian, fluid should be doable with the same software, since they all behave pretty much identically. You plug in a couple numbers for viscosity and density, and that's pretty much the story. So, water, diesel fuel, mercury, gasses that are not moving very fast, and so on.

Gasses that ARE moving fast are not close enough to "incompressible" and mixtures of corn starch and water have variable viscosity ("non-Newtonian"), so these probably require different programs to simulate.

I liked the breaking of the waves. I assume they're just saying 'eh, it's breaking, shove some chaotic foam on there, about yeah much' but it looked great and gives a nice sense of scale.

 

[The_Traveler]

My thesis in grad school was on determining the shear responses of certain pseudoplastic and dilatant cements (setting time in minutes)
What a horror show of data entry that was.
This was long before rheometers made digital records so every evening for months was spent re-coding from graph paper and punching cards.
Sooooooooooooo happy to finish.