Acoustic panels Muse Fluid By Michael Young

[Quan_Li]

I need an idea to make this wind-flowing pattern.
I tried the K2 wind goal, but the result was not ideal.
It was designed in GH.
Thanks!

Woven Image creates acoustic panels with patterns generated by animated...

[Toni_Osterlund]

@Quan_Li
Maybe with noise?

Describe this force field type pattern please

Not easy to say, it seems that the example you provided doesn’t generate the last picture. As the last part of equation is Math.Pow(Math.Cos((pt[i].Y *att * noise[i] / 2) * a), 1) / 2.0 there is an effect of Y coordinate. You could add a variable say y0 to do Math.Pow(Math.Cos(((pt[i].Y-Y0) *att * noise[i] / 2) * a), 1) / 2.0 Try to deconstruct the equation to see what it outputs. I generate them a bit randomly. If it was OK I keep them but I didn’t document them (such a shame). Power of 2 …

[laurent_delrieu]

@Quan_Li

, but the result was not ideal.

I think there are infinite ways to get a result in Kangaroo, it is not easy to be realistic for fabric as there are many parameters, like weight, wind force, number of points, anchors …
Some good discussions are here

Grid flapper

Here’s a first go at it. gridflap.gh (25.9 KB)

Kangaroo Wind Control

Hi @zic_23 The flapping of a flag in the wind is not primarily driven by variations in the wind velocity - even in a perfectly steady wind, it will still flap, and that’s what’s happening in the simulation. What happens is a feedback loop - depending on their angle, some parts of the mesh catch more of the wind, so parts of the mesh move differently. The tension of the fabric makes all the parts interact, and it gets pulled into a new shape, which results in a new wind force distribution, and …

you could also gave a try with Flexhopper.
The second thing I see is that there is a recursion in X so it could be good to have a simulation on a cylinder.

Having a bumped surface you can exaggerate it but using its normal, a bit like some light ray on a water surface

Here I use my noise tool and a sinus, but there are many others methods
noise points.gh (22.1 KB)

[DanielPiker]

The reference image doesn’t look like wind ripples to me. It looks more like a mesh displaced with some noise function with a bit of anisotropy.

[Quan_Li]

Thank you very much! @laurent_delrieu

a bit like some light ray on a water surface

Yes, you (@DanielPiker @Toni_Osterlund )are right, it is not wind but rather water caustic on the seabed of a shallow shore.
I tried several noise components before asking, but could not get the dancing-curves-align-to-same-direction look, now I think the secret is in the sine component as shown by @laurent_delrieu.

[laurent_delrieu]

Here a version that is more simplier. Just a geometry mesh, a twisted torus. Noise is applied to the torus then the noise value is applied to a square so you could have a seamless pattern

Not perfect in Y, surely some problem on the surface
noise points V2.gh (28.7 KB)

And you can deform the torus with whatever you want to get new effects

In 3D

In 2D

[Quan_Li]

I changed the title to Acoustic panels Muse Fluid By Michael Young for effective search.