Datasets:

ThermoFluidFoundation
/

thermofluid-demo

Error code:   DatasetGenerationCastError
Exception:    DatasetGenerationCastError
Message:      An error occurred while generating the dataset

All the data files must have the same columns, but at some point there are 5 new columns ({'case', 'inlet_temperature', 'Pr', 'Re', 'inlet_velocity'}) and 6 missing columns ({'temperature', 'v', 'x', 'pressure', 'u', 'y'}).

This happened while the csv dataset builder was generating data using

hf://datasets/ThermoFluidFoundation/thermofluid-demo/metadata.csv (at revision 207a486c764c99150a1842c24c14b59e49b5a6dc), ['hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/case_0001.csv', 'hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/case_0002.csv', 'hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/case_0003.csv', 'hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/metadata.csv']

Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1837, in _prepare_split_single
                  writer.write_table(table)
                  ~~~~~~~~~~~~~~~~~~^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 765, in write_table
                  self._write_table(pa_table, writer_batch_size=writer_batch_size)
                  ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 773, in _write_table
                  pa_table = table_cast(pa_table, self._schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              case: string
              Re: int64
              Pr: int64
              inlet_velocity: double
              inlet_temperature: int64
              -- schema metadata --
              pandas: '{"index_columns": [{"kind": "range", "name": null, "start": 0, "' + 847
              to
              {'x': Value('float64'), 'y': Value('float64'), 'u': Value('float64'), 'v': Value('float64'), 'pressure': Value('int64'), 'temperature': Value('int64')}
              because column names don't match
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1683, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1839, in _prepare_split_single
                  raise DatasetGenerationCastError.from_cast_error(
                  ...<4 lines>...
                  )
              datasets.exceptions.DatasetGenerationCastError: An error occurred while generating the dataset
              
              All the data files must have the same columns, but at some point there are 5 new columns ({'case', 'inlet_temperature', 'Pr', 'Re', 'inlet_velocity'}) and 6 missing columns ({'temperature', 'v', 'x', 'pressure', 'u', 'y'}).
              
              This happened while the csv dataset builder was generating data using
              
              hf://datasets/ThermoFluidFoundation/thermofluid-demo/metadata.csv (at revision 207a486c764c99150a1842c24c14b59e49b5a6dc), ['hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/case_0001.csv', 'hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/case_0002.csv', 'hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/case_0003.csv', 'hf://datasets/ThermoFluidFoundation/thermofluid-demo@207a486c764c99150a1842c24c14b59e49b5a6dc/metadata.csv']
              
              Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)

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x float64	y float64	u float64	v float64	pressure int64	temperature int64
0	0	0.1	0	101,325	300
0.1	0	0.15	0.01	101,320	301
0.2	0	0.2	0.02	101,310	302
0	0.1	0.08	0.01	101,300	303
0	0	0.2	0	101,325	310
0.1	0	0.25	0.02	101,320	311
0.2	0	0.3	0.03	101,310	312
0	0.1	0.15	0.02	101,300	313
0	0	0.3	0	101,325	320
0.1	0	0.35	0.03	101,320	321
0.2	0	0.4	0.05	101,310	322
0	0.1	0.2	0.03	101,300	323
null	null	null	null	null	null
null	null	null	null	null	null
null	null	null	null	null	null

ThermoFluid Demo Dataset

Overview

A demonstration dataset for thermofluid physics AI models.

This dataset provides simulation-based field data for testing physics-informed machine learning, neural operators, and physics foundation models.

Currently, the dataset contains simulation-based CFD field variables including:

velocity
pressure
temperature

Data Format

Each CSV file contains spatial field information:

Variable	Description
x	Spatial x-coordinate
y	Spatial y-coordinate
u	Velocity x-component
v	Velocity y-component
pressure	Pressure field
temperature	Temperature field

Dataset Structure

thermofluid-demo/
├── README.md
├── metadata.csv
└── data/
    ├── case_0001.csv
    ├── case_0002.csv
    └── case_0003.csv

Parameters

Each simulation case includes operating conditions:

Reynolds number (Re)
Prandtl number (Pr)
Inlet velocity
Inlet temperature

Applications

This dataset can be used for:

Physics-informed neural networks (PINNs)
Neural operators (FNO, DeepONet)
Physics transformers
Thermofluid foundation models
CFD surrogate modeling

Version

v0.1 - Initial demonstration dataset

Contents:

3 simulation cases
Velocity, pressure, and temperature fields
Tabular CFD representation

License

Apache License 2.0

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Total file size:

4.72 kB