ProjectPhysX/FluidX3D
FluidX3D
FluidX3D este un solver de dinamică a fluidelor computaționale (CFD) accelerat pe GPU și un simulator de fluide bazat pe voxeli. Utilizează metoda lattice Boltzmann pentru a simula comportamentul gazelor și lichidelor, presiunea și viteza printr-o abstractizare hardware bazată pe OpenCL care suportă atât procesoare grafice, cât și CPU-uri.
Sistemul se specializează în simularea fluxului multifazic folosind metode volume-of-fluid pentru modelarea suprafeței libere și a picăturilor. Include un simulator termic pentru modelarea transferului de căldură și a convecției termice, alături de instrumente pentru analiza forțelor aerodinamice pentru a calcula portanța, rezistența și cuplul asupra obiectelor fizice.
Software-ul oferă o suită cuprinzătoare de capabilități de simulare, inclusiv urmărirea particulelor Lagrangian pentru interacțiunea fluidă bidirecțională, animația obiectelor rotative prin re-voxelizare periodică și stabilizarea fluxului turbulent pentru numere Reynolds ridicate. Gestionează datele prin importul geometriei mesh-urilor triunghiulare și suportă diverse metode de vizualizare, inclusiv extracția suprafeței prin marching cubes, rasterizarea în memorie și randarea video.
Performanța este gestionată prin descompunerea domeniului multi-GPU și compresia memoriei în jumătate de precizie (half-precision).
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.
