File size: 4,481 Bytes
8ae6fd4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | # DiffVOF Simulation Data / DiffVOF 仿真数据
OpenFOAM interFoam 2D VOF two-phase flow simulation data for the DiffVOF+NN paper revision.
用于 DiffVOF+NN 论文大修的 OpenFOAM interFoam 2D VOF 两相流仿真数据。
## Directory Structure / 目录结构
```
Exp/data/
├── templates/ ← Case templates / 仿真 case 模板
│ ├── dam_break/ ← 2D 溃坝 (128×128)
│ ├── rising_bubble/ ← 2D 气泡上升 (128×256)
│ ├── stokes_wave/ ← 2D Stokes 波 (256×128)
│ └── droplet_impact/ ← 2D 液滴撞击 (128×128)
│ └── base/ ← OpenFOAM case: 0/ constant/ system/
├── raw/ ← Raw simulation data / 原始仿真数据
│ ├── {case_type}/tNN/ ← 50 trajectories per type, t00-t49
│ │ ├── 0/ ← Initial fields (U, p_rgh, alpha.water)
│ │ ├── constant/ ← Physical properties + mesh
│ │ ├── system/ ← Solver settings (controlDict, fvSchemes, ...)
│ │ ├── {time}/ ← Reconstructed field snapshots
│ │ ├── log.interFoam ← Solver log (ends with "End" if complete)
│ │ └── log.blockMesh ← Mesh generation log
│ └── ...
├── processed/ ← HDF5 processed data / 处理后 HDF5 数据
│ ├── {case_type}/
│ │ └── traj_NNNN.h5 ← 50 files per type (traj_0000.h5 - traj_0049.h5)
│ └── ...
├── scripts/ ← Processing & viz scripts / 后处理与可视化脚本
│ ├── postprocess_to_hdf5.py ← OpenFOAM → HDF5 conversion
│ ├── visualize_hdf5.py ← HDF5 → PNG visualization
│ ├── foam_viz.py ← OpenFOAM field visualization
│ ├── viz_common.py ← Shared visualization utilities
│ ├── gen_init_conditions.py ← Random initial condition generator
│ ├── run_droplet_loop.sh ← droplet_impact batch runner
│ ├── run_stokes_loop.sh ← stokes_wave batch runner
│ └── run_postprocess_all.sh ← HDF5 postprocessing wrapper
└── visualizations/ ← Visualization outputs / 可视化输出
├── arrow/ ← Velocity arrow plots (4 cases × foam+hdf5)
└── streamline/ ← Streamline plots (4 cases × foam+hdf5)
```
## HDF5 Format / HDF5 格式
Each `traj_NNNN.h5` contains:
| Dataset | Shape | Type | Description / 描述 |
|------------|--------------------|---------|-----------------------------|
| `u` | (n_frames, nx, ny) | float32 | X-velocity / X 方向速度 |
| `v` | (n_frames, nx, ny) | float32 | Y-velocity / Y 方向速度 |
| `p` | (n_frames, nx, ny) | float32 | Pressure (p_rgh) / 压力 |
| `alpha` | (n_frames, nx, ny) | float32 | Water volume fraction / 水相分数 |
| `x_grid` | (nx, ny) | float64 | X-coordinate mesh / X 坐标网格 |
| `y_grid` | (nx, ny) | float64 | Y-coordinate mesh / Y 坐标网格 |
Attributes / 属性: `nx`, `ny`, `n_saved`, `times`, `case_name`, `mesh_Lx`, `mesh_Ly`
## Case Types / 案例类型
| Case Type | Mesh | Domain (m) | Physics / 物理场景 |
|------------------|-----------|----------------|-----------------------------|
| `dam_break` | 128×128 | 0.584×0.584 | 2D dam break / 溃坝 |
| `rising_bubble` | 128×256 | 1.0×2.0 | Buoyancy-driven bubble / 气泡上升 |
| `stokes_wave` | 256×128 | varies | Surface gravity wave / 表面重力波 |
| `droplet_impact` | 128×128 | 0.05×0.05 | Droplet impact / 液滴撞击壁面 |
## Simulation Config / 仿真配置
- **Solver**: OpenFOAM v1906 (Foundation) interFoam
- **Parallel**: MPI 16 processes, 2D hierarchical decomposition (n×n×1)
- **Adaptive dt**: maxCo=0.5, maxAlphaCo=0.5, maxDeltaT=1e-4
- **Random ICs**: generated by `gen_init_conditions.py` with per-type parameter ranges
## Reproducibility / 可复现性
Each trajectory's initial conditions are embedded in its `0/U`, `0/alpha.water`, and `0/p_rgh` files. To reproduce:
```bash
# Reconstruct and visualize a single case / 重建并可视化单个 case
cd raw/{case_type}/t00
blockMesh && decomposePar -force
mpirun -np 16 interFoam -parallel
reconstructPar -latestTime
```
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