DNS 1-3 Instantaneous Data: Difference between revisions

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=Flow in a 3D diffuser=
{{DNSHeaderLib
{{DNSHeader
|area=1
|area=1
|number=3
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= Instantaneous data =
= Instantaneous data =


Instantaneous volumetric data is provided every approximately 25 time units for around 800 time units, resulting in 38 snapshots. The variables provided are the instantaneous velocity and pressure as well as their gradients. The data is provided separately for the inlet square duct area (x=[0,5]) and the diffuser area (x=[5,42.5]). The long inlet duct and the exit area are left out of the dataset. For more information regarding the storage format, please refer to the  [[lib:DNS_1-3_format#Instantaneous_data_format|storage format guidelines]].
Instantaneous volumetric data is provided every approximately 25 time units for around 800 time units, resulting in 38 snapshots. The variables provided are the instantaneous velocity and pressure as well as their gradients. The data is provided separately for the inlet duct (x/h=[-7,-3]) and the diffuser region (x=[0,37.5]). The long inlet duct and the exit area are left out of the dataset. Each instantaneous field weights 1.2 GB for the inlet duct and 14 GB for the diffuser, resulting in a total of 45.8 GB for the inlet duct and 532 GB for the diffuser region. For more information regarding the storage format, please refer to the  [[lib:DNS_1-3_format#Instantaneous_data_format|storage format guidelines]].
 
A [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/downloader.sh bash script] is provided to download part or all the dataset automatically instead of clicking to all the downloads. It can be run under any Unix terminal and can be used as
<pre class="brush: bash">
bash downloader.sh [dataset] [start] [end] [interval] [destination]
</pre>
For dataset use "duct" for the inlet duct region and "difu" for the diffuser region. Then "start", "end" and "interval" are set to "0", "925000" and "25000" respectively for this dataset. The [destination] is, by default, the current directory. An example of usage to download part of the diffuser database would be
<pre class="brush: bash">
bash downloader.sh difu 50000 500000 25000 dataset
</pre>
This would download instants 50000 to 500000 of the diffuser region and store it in the "dataset" folder.


=== Duct area ===
=== Duct area (x/h=[-7,-3]) ===
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/duct_0.h5 Duct instant 0, 0.0 TU (1.2 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/duct_0.h5 Duct instant 0, 0.0 TU (1.2 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/duct_25000.h5 Duct instant 25000, 21.5901 TU (1.2 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/duct_25000.h5 Duct instant 25000, 21.5901 TU (1.2 GB)].
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* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/duct_925000.h5 Duct instant 925000, 795.607 TU (1.2 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/duct_925000.h5 Duct instant 925000, 795.607 TU (1.2 GB)].


=== Diffuser area ===
=== Diffuser area (x=[0,37.5]) ===
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/difu_0.h5 Diffuser instant 0, 0.0 TU (14 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/difu_0.h5 Diffuser instant 0, 0.0 TU (14 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/difu_25000.h5 Diffuser instant 25000, 21.5901 TU (14 GB)].
* [https://kbwiki-data.s3-eu-west-2.amazonaws.com/DNS-1/3/difu_25000.h5 Diffuser instant 25000, 21.5901 TU (14 GB)].
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| organisation=Barcelona Supercomputing Center (BSC)
| organisation=Barcelona Supercomputing Center (BSC)
}}
}}
{{DNSHeaderLib
{{DNSHeader
|area=1
|area=1
|number=3
|number=3

Latest revision as of 09:25, 5 January 2023

Flow in a 3D diffuser

Front Page

Description

Computational Details

Quantification of Resolution

Statistical Data

Instantaneous Data

Storage Format

Instantaneous data

Instantaneous volumetric data is provided every approximately 25 time units for around 800 time units, resulting in 38 snapshots. The variables provided are the instantaneous velocity and pressure as well as their gradients. The data is provided separately for the inlet duct (x/h=[-7,-3]) and the diffuser region (x=[0,37.5]). The long inlet duct and the exit area are left out of the dataset. Each instantaneous field weights 1.2 GB for the inlet duct and 14 GB for the diffuser, resulting in a total of 45.8 GB for the inlet duct and 532 GB for the diffuser region. For more information regarding the storage format, please refer to the storage format guidelines.

A bash script is provided to download part or all the dataset automatically instead of clicking to all the downloads. It can be run under any Unix terminal and can be used as 

bash downloader.sh [dataset] [start] [end] [interval] [destination]

For dataset use "duct" for the inlet duct region and "difu" for the diffuser region. Then "start", "end" and "interval" are set to "0", "925000" and "25000" respectively for this dataset. The [destination] is, by default, the current directory. An example of usage to download part of the diffuser database would be 

bash downloader.sh difu 50000 500000 25000 dataset

This would download instants 50000 to 500000 of the diffuser region and store it in the "dataset" folder.

Duct area (x/h=[-7,-3])

Diffuser area (x=[0,37.5])



Contributed by: Oriol Lehmkuhl, Arnau Miro — Barcelona Supercomputing Center (BSC)

Front Page

Description

Computational Details

Quantification of Resolution

Statistical Data

Instantaneous Data

Storage Format


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