Datasets:

FluidVerse
/

2D_SDBA_SSOO

+{
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+  "@type": "sc:Dataset",
+  "name": "2D Shock-Induced Droplet Breakup in Air with Symmetric BC at a resolution of 512x512",
+  "description": "This dataset consists of 300 trajectories of shock-induced droplet breakup in air with symmetric BC at the north and south boundaries. The dataset has a spatial resolution of 512x512, a temporal resolution of 101 time steps and is split into a test and train set with a ratio of 0.2:0.8.The trajectories differ in their initial condition including mach number (1.3 - 2.1), weber number (10 - 30 & 10k - 30k), droplet count (1 - 5), droplet radius (2mm - 3.5mm) and the droplet center position.",
+  "conformsTo": "http://mlcommons.org/croissant/1.0",
+  "citeAs": "----",
+  "creator": {
+    "@type": "sc:Organization",
+    "name": "FluidVerse",
+    "url": "https://huggingface.co/FluidVerse"
+  },
+  "dateCreated": "2026-05-01 00:00:00",
+  "datePublished": "2026-05-01 00:00:00",
+  "inLanguage": "en",
+  "keywords": [
+    "Computational Fluid Dynamics",
+    "compressible multiphase flows",
+    "droplets",
+    "shock",
+    "2D",
+    "cc-by-nc-4.0",
+    "Datasets",
+    "Croissant",
+    "512x512",
+    "Sci-ML"
+  ],
+  "license": "https://choosealicense.com/licenses/cc-by-nc-4.0/",
+  "rai:annotationsPerItem": "None",
+  "rai:annotatorDemographics": "Not applicable. The dataset was generated from numerical simulations and does not rely on human annotators.",
+  "rai:dataAnnotationAnalysis": "Not applicable.",
+  "rai:dataAnnotationPlatform": "None",
+  "rai:dataAnnotationProtocol": "No manual annotation was performed. HDF5 group names encode simulation parameters and trajectory identifiers; they are part of the dataset structure rather than annotations.",
+  "rai:dataBiases": "No major intentional sampling bias was introduced within the chosen simulation parameter ranges. However, the dataset remains limited to the modeled physical setup, solver assumptions, and parameter space used for data generation.",
+  "rai:dataCollection": "Data was collected from high-fidelity numerical simulations of shock-induced droplet breakup in air with symmetric boundary conditions. The simulations were performed using ALPACA, a well-validated multi-phase computational fluid dynamics (CFD) solver, and the data was generated under controlled conditions to ensure accuracy and reliability.",
+  "rai:dataCollectionMissingData": "No missing data.",
+  "rai:dataCollectionRawData": "The raw data is created by running high-fidelity multi phase flow simulations. The raw data is outputted in the form of time-series HDF5 files, which are processed and grouped into single h5 file.",
+  "rai:dataCollectionTimeFrame": "2026-05-01 00:00:00",
+  "rai:dataCollectionType": "Numerical Simulation Data",
+  "rai:dataDataManipulationProtocol": "Raw data is processed by masking the raw output generated from ALPACA and downsampling it to the final resolution of 512x512.",
+  "rai:dataImputationProtocol": "Not applicable.",
+  "rai:dataLimitations": "This dataset is limited to the simulated physical setup, parameter ranges, numerical methods, and resolution used during data generation. Models trained on this dataset may not generalize to other flow regimes, geometries, solver settings.",
+  "rai:dataPreprocessingProtocol": "The data is merged from multiple masked and downsampled simulation outputs into two hdf5 files (test and train).",
+  "rai:dataReleaseMaintenancePlan": "The dataset is openly released and maintained on Hugging Face through versioned updates. Future releases may include additional trajectories, higher resolution data, or extended time frames based on community feedback and ongoing research developments.",
+  "rai:dataSocialImpact": "The dataset is intended to support open and reproducible research in scientific machine learning for fluid dynamics.",
+  "rai:dataUseCases": "Training, Testing, Validation, Fine Tuning",
+  "rai:machineAnnotationTools": "Not applicable.",
+  "rai:personalSensitiveInformation": "None",
+  "rai:hasSyntheticData": "False",
+  "prov:wasDerivedFrom": "",
+  "prov:wasGeneratedBy": [
+      {
+          "@type": "prov:Activity",
+          "prov:type": "Solver Validation",
+          "prov:label": "Solver Validation",
+          "prov:description": "Before generating the dataset, the solver was validated against reference data, provided by external independent papers and solvers, to ensure its accuracy and reliability. The validation process involved comparing key metrics like peak pressure, volume dynamics and center of mass.",
+          "prov:wasAttributedTo": [{
+              "@type": "prov:Agent",
+              "@id": "research_team",
+              "prov:label": "Research Team",
+              "prov:description": "The data validation was conducted by the paper's research team."
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+          "@type": "prov:Activity",
+          "prov:type": "Data Collection",
+          "prov:label": "Data generation through numerical simulation",
+          "prov:description": "The dataset was generated from high-fidelity numerical simulations of shock-induced droplet breakup in air with symmetric boundary conditions at the north and south boundaries. The simulations were performed using ALPACA, a well-validated multi-phase computational fluid dynamics (CFD) solver, and 300 trajectories were generated under controlled conditions to ensure accuracy and reliability.",
+          "prov:wasAttributedTo": [{
+              "@type": "prov:Agent",
+              "@id": "research_team",
+              "prov:label": "Research Team",
+              "prov:description": "The data generation was conducted by the paper's research team."
+          }]
+      },
+      {
+          "@type": "prov:Activity",
+          "prov:type": "Data Processing",
+          "prov:label": "Data preprocessing",
+          "prov:description": "The raw simulation data was processed by masking the raw output generated from ALPACA and downsampling it to the final resolution (512x512). The downsampling was done in a conservative manner to ensure the conservation of mass, momentum and energy in the final dataset.",
+          "prov:wasAttributedTo": [{
+              "@type": "prov:Agent",
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+              "prov:label": "Research Team",
+              "prov:description": "The data processing was conducted by the paper's research team."
+          }]
+      },
+      {
+          "@type": "prov:Activity",
+          "prov:type": "Data Organization",
+          "prov:label": "Data Organization",
+          "prov:description": "The pre processed data was merged into two separate hdf5 files, one for training and one for testing (0.8:0.2 train-test split).",
+          "prov:wasAttributedTo": [{
+              "@type": "prov:Agent",
+              "@id": "research_team",
+              "prov:label": "Research Team",
+              "prov:description": "The data organization was conducted by the paper's research team."
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+      }
+  ],
+  "url": "https://huggingface.co/datasets/FluidVerse/2D_SDBA_SSOO",
+  "version": "1.0.0",
+  "distribution": [
+    {
+      "@type": "cr:FileObject",
+      "@id": "2D-SDBA-SSOO-test-h5-512x512",
+      "name": "test.h5",
+      "description": "Test set, consisting of 60 trajectories with a spatial resolution of 512x512 and a temporal resolution of 101 time steps, of a dataset which captures the time-evolving behavior of varying number of 2D cylindrical droplets subjected to an external shock wave in air.",
+      "contentSize": "40.2 GB",
+      "contentUrl": "https://huggingface.co/datasets/FluidVerse/2D_SDBA_SSOO/blob/main/multi_droplet/512x512/test.h5",
+      "encodingFormat": "application/x-hdf5",
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+    },
+    {
+      "@type": "cr:FileObject",
+      "@id": "2D-SDBA-SSOO-train-h5-512x512",
+      "name": "train.h5",
+      "description": "Train set, consisting of 240 trajectories with a spatial resolution of 512x512 and a temporal resolution of 101 time steps, of a dataset which captures the time-evolving behavior of varying number of 2D cylindrical droplets subjected to an external shock wave in air.",
+      "contentSize": "161 GB",
+      "contentUrl": "https://huggingface.co/datasets/FluidVerse/2D_SDBA_SSOO/blob/main/multi_droplet/512x512/train.h5",
+      "encodingFormat": "application/x-hdf5",
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+}

multi_droplet/512x512/2D_SDBA_SSOO_metadata_512x512.json ADDED Viewed

	@@ -0,0 +1,283 @@

+{
+    "dataset_name": "2D Shock-Induced Droplet Breakup in Air",
+    "pde": "2D compressible Euler equations",
+    "created": "04-2026",
+    "code": "ALPACA",
+    "dataset_info":{
+        "num_trajectories": 300,
+        "num_time_steps": 101,
+        "num_channels": 7,
+        "channel_names": ["density", "density_1", "density_2", "diffuse_volume_fraction_1", "pressure", "velocityX", "velocityY"],
+        "spatial_dimensions": 2,
+        "spatial_grid_size": [512, 512],
+        "grid_spacing_in_meters": 1.0332e-4,
+        "boundary_conditions": {
+            "west": "Open",
+            "east": "Open",
+            "south": "Symmetry",
+            "north": "Symmetry"
+        }
+    },
+    "training_info":{
+        "train_split": 0.8,
+        "test_split": 0.2,
+        "split_strategy": "The dataset is split in such a way, that there is either one trajectories with non-uniform radius or one trajectory with uniform radius (randomly selected) per mach number, breakup mode and droplet count in the test dataset."
+    },
+    "simulation_info":{
+        "solver_info":{
+            "solver_name": "ALPACA",
+            "solver_reference": "https://gitlab.lrz.de/nanoshock/alpaca",
+            "solver_setup": "RDEMIC"
+        },
+        "time": {
+            "time_steps": 101,
+            "t_start": 0.0,
+            "t_end": "variable depending on IC",
+            "t_end_range": [9.10e-5, 1.24e-3],
+            "t_star": 0.1,
+            "dt_save": "variable depending on IC",
+            "dt_save_range": [9.1e-7, 1.24e-5],
+            "dt_solver": {
+                "mean": 1.33e-8
+            },
+            "time_unit": "seconds"
+        },
+        "dimensions":{
+            "domain_size": [0.1058, 0.0529],
+            "domain_effective_resolution": [1024, 512],
+            "domain_cell_size": {
+                "min": 1.0332e-4,
+                "max": 8.2656e-4
+            },
+            "domain_adaptive_mesh": true,
+            "subdomain_size": [0.0529, 0.0529],
+            "subdomain_box": [[0.0282, 0.0811], [0.0, 0.0529]],
+            "subdomain_resolution": [512, 512],
+            "subdomain_cell_size": {
+                "min": 1.0332e-4,
+                "max": 1.0332e-4
+            },
+            "subdomain_adaptive_mesh": false,
+            "dimension_unit": "meters"
+        },
+        "wall_time_per_trajectory":{
+            "mean": 9.2,
+            "time_unit": "minutes"
+        },
+        "multi_phase_parameters": {
+            "number_of_phases": 2,
+            "phases": [
+                {
+                    "name": "air",
+                    "type": "fluid",
+                    "eos": {
+                        "type": "stiffened_gas",
+                        "gamma": 1.4,
+                        "background_pressure": 0.0
+                    },
+                    "surface_tension": "variable depending on IC",
+                    "surface_tension_range": [1.2079e-3, 1181.76]
+                },
+                {
+                    "name": "droplet",
+                    "type": "fluid",
+                    "eos": {
+                        "type": "stiffened_gas",
+                        "gamma": 6.12,
+                        "background_pressure": 3.43e8
+                    },
+                    "surface_tension": "variable depending on IC",
+                    "surface_tension_range": [1.2079e-3, 1181.76]
+                }
+            ]
+        },
+        "physics": {
+            "convection": true,
+            "viscosity": false,
+            "head_conduction": false,
+            "gravity": false,
+            "surface_tension": true
+        },
+        "CFL": 0.4
+    },
+    "post_processing_info":{
+        "downsampling": {
+            "method": "conservation",
+            "factor": 1
+        }
+    },
+    "conditioning_parameters":{
+        "Shock_Mach": {
+            "keyword": "Mas",
+            "min":1.2,
+            "max":3.2,
+            "mean": 2.2,
+            "groups":[1.2, 1.6, 2.0, 2.4, 2.8, 3.2]
+        },
+        "Droplet_Count": {
+            "keyword": "sd",
+            "min":1,
+            "max":5,
+            "mean": 3,
+            "groups":[1,2,3,4,5]
+        },
+        "End_Time": {
+            "keyword": "tend",
+            "min":9.10e-5,
+            "max":1.24e-3,
+            "mean": 6.655e-4,
+            "groups": [9.10e-5, 1.13e-4, 1.48e-4, 2.15e-4, 3.8e-4, 1.24e-3]
+        },
+        "Droplet_Radius": {
+            "keyword": "Ar, Br, Cr, Dr, Er",
+            "min":2e-3,
+            "max":3.5e-3,
+            "mean": 2.75e-3
+        },
+        "Droplet_Center_Position": {
+            "keyword": "Ax, Ay, Bx, By, Cx, Cy, Dx, Dy, Ex, Ey",
+            "min_x": 0.0302,
+            "max_x": 0.0436,
+            "min_y": 0.012,
+            "max_y": 0.0409,
+            "min_distance_between_droplets": 0.0077
+        },
+        "Droplet_Weber_Number": {
+            "keyword": "Aw, Bw, Cw, Dw, Ew",
+            "min": 10,
+            "max": 30000,
+            "mean": 15005,
+            "groups": ["RTP", "SIE"],
+            "group_range": [[10, 30], [10000, 30000]]
+        }
+    },
+    "fields": {
+        "density": {
+            "shape": [512,512],
+            "dtype": "float64",
+            "units": "kg/m^3",
+            "compression": {
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+}