| # DiffVOF Simulation Data / DiffVOF 仿真数据 |
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| 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。 |
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| ## Directory Structure / 目录结构 |
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| ``` |
| 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) |
| ``` |
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| ## HDF5 Format / HDF5 格式 |
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| Each `traj_NNNN.h5` contains: |
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| | 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 | |
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| Attributes / 属性: `nx`, `ny`, `n_saved`, `times`, `case_name`, `mesh_Lx`, `mesh_Ly` |
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| ## Case Types / 案例类型 |
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| | 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 | |
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| ## Simulation Config / 仿真配置 |
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| - **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 |
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| ## Reproducibility / 可复现性 |
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| Each trajectory's initial conditions are embedded in its `0/U`, `0/alpha.water`, and `0/p_rgh` files. To reproduce: |
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| ```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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