ProjectPhysX/FluidX3D
FluidX3D
FluidX3D ist ein GPU-beschleunigter Solver für numerische Strömungsmechanik und ein Voxel-basierter Fluidsimulator. Er nutzt die Lattice-Boltzmann-Methode zur Simulation von Gas- und Flüssigkeitsverhalten, Druck und Geschwindigkeit durch eine OpenCL-basierte Hardware-Abstraktion, die sowohl Grafikprozessoren als auch CPUs unterstützt.
Das System ist auf Mehrphasen-Strömungssimulation unter Verwendung von Volume-of-Fluid-Methoden für freie Oberflächenmodellierung und Tröpfchen spezialisiert. Es enthält einen thermischen Simulator zur Modellierung von Wärmeleitung und thermischer Konvektion, neben Tools zur aerodynamischen Kraftanalyse zur Berechnung von Auftrieb, Widerstand und Drehmoment auf physische Objekte.
Die Software bietet eine umfassende Suite an Simulationsfunktionen, einschließlich Lagrangian-Partikel-Tracking für Zwei-Wege-Fluid-Interaktion, Animation rotierender Objekte via periodischer Re-Voxelisierung und turbulenter Strömungsstabilisierung für hohe Reynolds-Zahlen. Sie handhabt Daten durch Import von Dreiecks-Mesh-Geometrien und unterstützt verschiedene Visualisierungsmethoden, einschließlich Marching-Cubes-Oberflächenextraktion, In-Memory-Rasterisierung und Video-Rendering.
Die Performance wird durch Multi-GPU-Domain-Decomposition und Half-Precision-Speicherkompression verwaltet.
Features
- GPU-Accelerated Physics Simulations - Provides a high-performance physics engine that executes fluid dynamics simulations entirely on GPU hardware.
- Lattice Boltzmann Methods - Utilizes the lattice Boltzmann method as the core engine for simulating gas and liquid behavior.
- Free Surface Modeling - Models the liquid-gas interface using volume-of-fluid and PLIC methods to simulate droplets and free surfaces.
- OpenCL Accelerators - Provides an OpenCL-based hardware abstraction to execute simulation kernels across diverse GPUs and CPUs.
- Aerodynamic Force Analysis - Calculates lift, drag, and torque on physical objects to determine the impact of fluid motion.
- Fluid Dynamics Simulation - Provides a full CFD solver to simulate the flow of liquids and gases using the lattice Boltzmann method.
- Volume-of-Fluid Interface Tracking - Models the interface between liquids and gases to simulate droplets and free surfaces.
- Voxel-Based Simulations - Converts triangle meshes into voxel grids to model complex fluid-structure interactions and boundary conditions.
- Lift and Drag Calculations - Calculates lift and drag on objects within the fluid simulation to analyze motion impact.
- Lattice Boltzmann Thermal Simulators - Implements a thermal simulator using the lattice Boltzmann method to model heat transfer and thermal convection.
- Material Phase Simulators - Models the interaction between liquid and gas phases to simulate droplets and free surfaces.
- Voxel Mesh Import - Converts triangle meshes from binary files into a voxel grid directly using the GPU.
- Direct-Memory Media Renderers - Generates real-time rasterization and raytraced visualizations directly in memory to avoid exporting large volumetric files.
- Technical Field Visualization - Creates velocity fields, streamlines, and surfaces using a marching-cubes algorithm for fluid behavior analysis.
- Volumetric Mesh Extraction - Implements marching cubes to extract polygonal meshes from volumetric simulation data for visualization.
- Voxelization Accelerators - Provides GPU-accelerated voxelization to convert triangle meshes into simulation grid cells for high-speed import.
- Lagrangian Particle Integration - Implements Lagrangian particle tracking for two-way interaction between discrete particles and the fluid grid.
- Rotating Object Animations - Provides rotating object animation by periodically re-voxelizing meshes to simulate instantaneous angular velocity.
- Boundary Condition Enforcement - Defines fixed velocity or density for inflows and outflows to control fluid entry and exit.
- Domain Decomposition - Implements spatial domain decomposition to distribute simulation workloads across multiple GPUs.
- Global Volume Forces - Simulates pressure gradients and force fields on solid boundaries using global volume forces.
- Lagrangian Particle Tracking - Integrates passive tracers or coupled particles to study buoyancy and sedimentation.
- Thermal Convection Modeling - Models heat transfer and thermal convection by assigning cell temperatures and applying expansion and diffusion coefficients.
- Turbulent Flow Stabilization - Maintains simulation stability at high Reynolds numbers by implementing a subgrid model for fluid dynamics.
- Two-Way Fluid-Particle Coupling - Integrates discrete Lagrangian particles that both respond to and exert forces back onto the fluid grid.
- Half-Precision Memory Compression - Uses half-precision memory compression to lower memory usage and increase processing speed.
