DNS 1-6 Storage Format: Difference between revisions
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= Storage Format = | = Storage Format = | ||
The volume data provided is stored in the XML Parallel vtkUnstructuredGrid format, e.g, filename.pvtu [‌[[Lib:DNS_1-5_format#1|1]]]. | |||
The Parallel data format does not actually contain any data but references other serial files (Serial vtkUnstructuredGrid) containing the data for each grid partition used for the computation, e.g., filename_partition_number.vtu. | |||
Both the .pvtu (or any .vtu) file can be easily read through the open-source Paraview software, a multi-platform application for data analysis and visualization [‌[[Lib:DNS_1-5_format#2|2]]]. Datasets are delivered as compressed file (.tar.gz). | |||
==Statistical data format== | |||
The dataset consists of a set of .pvtu files, possibly grouping similar statistics: | |||
* ''averaged_fields.pvtu'': | |||
** averaged velocity, <math>\overline{u}_{i}/u_{ref}</math> | |||
** averaged pressure, <math>\overline{p}/p_{ref}</math> | |||
** averaged density, <math>\overline{\rho}/\rho_{ref}</math> | |||
** averaged temperature, <math>\overline{T}/T_{ref}</math> | |||
* ''Reynolds_stress.pvtu'': all the 6 components of the Reynolds stress tensor, <math>R_{ij}/(\rho_{ref}u_{ref}^2)</math> | |||
* ''Favre_triple_velocity_correlation.pvtu'': all the 10 components of the triple velocity correlation, <math>\overline{\rho u''_{i} u''_{j} u''_{k}}/(\rho_{ref}u_{ref}^3)</math> | |||
* ''pressure_velocity_correlation.pvtu'': the 3 components of the pressure-velocity correlations, <math>p'u''_{i}/(p_{ref}u_{ref})</math> | |||
* ''scales.pvtu'': | |||
** Taylor microscale, <math>\eta_{T}/H</math> | |||
** Kolmogorov length scale, <math>\eta_{K}/H</math> | |||
** Kolmogorov time scales, <math>\tau_{K}u_{ref}/H</math> | |||
where <math>i</math> and <math>j</math> range between 1 and 3 and <math>u_1</math>, <math>u_2</math>, <math>u_3</math> are alias of <math>u</math>, <math>v</math>, <math>w</math>. | |||
==References== | |||
# <div id="1">https://vtk.org/wp-content/uploads/2015/04/file-formats.pdf</div> | |||
# <div id="2">https://www.paraview.org/</div> | |||
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Revision as of 17:11, 2 February 2023
Storage Format
The volume data provided is stored in the XML Parallel vtkUnstructuredGrid format, e.g, filename.pvtu [1]. The Parallel data format does not actually contain any data but references other serial files (Serial vtkUnstructuredGrid) containing the data for each grid partition used for the computation, e.g., filename_partition_number.vtu. Both the .pvtu (or any .vtu) file can be easily read through the open-source Paraview software, a multi-platform application for data analysis and visualization [2]. Datasets are delivered as compressed file (.tar.gz).
Statistical data format
The dataset consists of a set of .pvtu files, possibly grouping similar statistics:
- averaged_fields.pvtu:
- averaged velocity,
- averaged pressure,
- averaged density,
- averaged temperature,
- Reynolds_stress.pvtu: all the 6 components of the Reynolds stress tensor,
- Favre_triple_velocity_correlation.pvtu: all the 10 components of the triple velocity correlation,
- pressure_velocity_correlation.pvtu: the 3 components of the pressure-velocity correlations,
- scales.pvtu:
- Taylor microscale,
- Kolmogorov length scale,
- Kolmogorov time scales,
where and range between 1 and 3 and , , are alias of , , .
References
Contributed by: Alessandro Colombo (UNIBG), Francesco Carlo Massa (UNIBG), Jean-Baptiste Chapelier (ONERA) — University of Bergamo (UNIBG), ONERA
© copyright ERCOFTAC 2024