Revision as of 13:53, 13 February 2023

Storage Format

The statistical data provided is stored in the vtk format, e.g, filename.vtk [‌1]. The .vtk 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).

Instantaneous data format

The dataset consists of a single .pvtu file per snapshot, directly referencing all the nondimensional variables and their spatial derivatives as well as the node positions. For the sake of handling, the instantaneous data was extracted from a limited region of the computational domain shown in Fig. X.

The names of the provided variables are:

pressure, $p$ ;
temperature, $T$ ;
velocity component in x-direction, $u$ ;
velocity component in y-direction, $v$ ;
velocity component in z-direction, $w$ .

The spatial derivatives of each variable are named as variable_di where i={x,y,z}, e.g., u_dy is the derivative of the first component of the velocity vector with respect to the x-direction.

All the quantities are made dimensionless with respect to the reference state.

Statistical data format

The dataset consists of a set of .vtk files:

averaged_pressure.vtk: averaged pressure, ${p}/p_{ref}$
averaged_velocity_i.vtk: averaged velocity i-th component, ${u}_{i}/u_{ref}$
Reynolds_stress_ij.vtk: the 6 components of the Reynolds stress tensor, $R_{ij}/(\rho _{ref}u_{ref}^{2})$
Taylor_microscale.vtk: Taylor microscale, $\eta _{T}/H$
Kolmogorov_length_scale.vtk: Kolmogorov length scale, $\eta _{K}/H$
Kolmogorov_time_scale.vtk: Kolmogorov time scales, $\tau _{K}u_{ref}/H$

where $i$ and $j$ range between 1 and 3 and are alias of $x$ (streamwse), $y$ (normalwise), $z$ (spanwise).

References

Contributed by: Francesco Bassi, Alessandro Colombo, Francesco Carlo Massa — Università degli studi di Bergamo (UniBG)

Front Page

Description

Computational Details

Quantification of Resolution

Statistical Data

Instantaneous Data

Storage Format

@@ Line 31: / Line 31: @@
 ==Statistical data format==
-The dataset consists of a set of .pvtu files, possibly grouping similar statistics:
+The dataset consists of a set of .vtk files:
-* ''averaged_fields.pvtu'':
+* ''averaged_pressure.vtk'': averaged pressure, <math>{p}/p_{ref}</math>
-** averaged velocity, <math>\overline{u}_{i}/u_{ref}</math>
+* ''averaged_velocity_i.vtk'': averaged velocity ''i''-th component, <math>{u}_{i}/u_{ref}</math>
-** averaged pressure, <math>\overline{p}/p_{ref}</math>
+* ''Reynolds_stress_ij.vtk'': the 6 components of the Reynolds stress tensor, <math>R_{ij}/(\rho_{ref}u_{ref}^2)</math>
-** averaged density, <math>\overline{\rho}/\rho_{ref}</math>
+* ''Taylor_microscale.vtk'': Taylor microscale, <math>\eta_{T}/H</math>
-* ''Reynolds_stress.pvtu'': all the 6 components of the Reynolds stress tensor, <math>R_{ij}/(\rho_{ref}u_{ref}^2)</math>
+* ''Kolmogorov_length_scale.vtk'': Kolmogorov length scale, <math>\eta_{K}/H</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>
+* ''Kolmogorov_time_scale.vtk'': Kolmogorov time scales, <math>\tau_{K}u_{ref}/H</math>
-* ''pressure_velocity_correlation.pvtu'': the 3 components of the pressure-velocity correlations, <math>p'u''_{i}/(p_{ref}u_{ref})</math>
+where <math>i</math> and <math>j</math> range between 1 and 3 and are alias of <math>x</math> (streamwse), <math>y</math> (normalwise), <math>z</math> (spanwise).
-* ''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==

DNS 1-5 Storage Format: Difference between revisions

Revision as of 13:53, 13 February 2023

Contents

Storage Format

Instantaneous data format

Statistical data format

References

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DNS 1-5 Storage Format: Difference between revisions

Revision as of 13:53, 13 February 2023

Storage Format

Instantaneous data format

Statistical data format

References

Navigation menu

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