GAIA · Research

GAIA Hydrodynamics research

GAIA is the solver behind new Cloth neXt installations. Separately from the released product, PolyWorks is researching cloth that responds to water: FLIP Fluids simulations pushing fabric through forces computed natively on the GPU.

Status Experimental researchCoupling One-way, fluid to clothIn the current release No

Signal flow

How fluid data reaches the cloth

The fluid simulation is an input. GAIA reads it where the water meets the cloth, turns what it finds into forces, and hands those forces to the cloth solve. Nothing flows back into the fluid.

GAIA hydrodynamics signal flow FLIP Fluids simulation feeds sampling of water velocity and wet area at the cloth surface, which feeds a GPU hydrodynamic force calculation, which drives the cloth solve. A crossed return path shows that cloth does not affect the fluid. 01 INPUT FLIP Fluids fluid simulation in Blender 02 SAMPLE Velocity + wet area read at the cloth surface 03 GPU Hydrodynamic forces computed natively, CUDA 04 SOLVE Cloth solve fabric moves with the water NO RETURN PATH: CLOTH DOES NOT AFFECT THE FLUID
One-way coupling. The return path is intentionally not part of the research scope.
Research areas

Research areas

Native hydrodynamics

Forces inside the solver

Hydrodynamic forces are computed as part of GAIA rather than approximated with wind or force fields in the Blender scene.

FLIP-driven movement

The fluid leads

An existing FLIP Fluids simulation provides the water. Cloth reacts to how that water moves through and around it.

Sampling

Velocity and wet area

GAIA samples fluid velocity and which regions of the cloth are wet, so only the parts actually in the water are driven.

GPU acceleration

CUDA alongside the cloth

The force computation runs on the GPU next to the cloth solve, using CUDA on NVIDIA hardware.

Limitations

Current limitations and open work

GAIA Hydrodynamics is experimental research, not a production feature. Core parts are still unfinished, and the scope may change before anything ships.

CapabilityResearch scope
Fluid moves cloth (one-way coupling)In development
Surface reconstructionNot complete
Full middle-sequence validationNot complete
Cloth affects the fluid (two-way coupling)Not supported
Hydrostatic pressureNot supported
BuoyancyNot supported
Water absorption and wet fabric weightNot supported
Availability in Cloth neXt releasesNot released; no date announced
GAIA today

GAIA in the current release

The released GAIA solver handles the cloth, contact and soft body work described on the features page. It does not include the hydrodynamics research described above.

Current features

Backends
CUDA on NVIDIA, CPU
Installed
From the Cloth neXt add-on preferences
Verified
Compatibility checked before every bake