Data for: Numerical study of head-on droplet collisions at high Weber numbers

Version 1.0
Liu, Muyuan, 2021, "Data for: Numerical study of head-on droplet collisions at high Weber numbers", https://doi.org/10.18419/darus-1798, DaRUS, V1
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Description
Die Daten sind ein Auszug aus numerischen Simulationen im Teilprojekt A7 zur Untersuchung des Shattering-Phänomens, das bei binären Tropfenkollisionen bei hohen Weberzahlen auftritt. Die Daten geben einen Einblick in die Desintegration des Stoßkomplexes unter Ausbildung von Sekundärtropfen. Dem stochastischen Verhalten wird durch Variation der Störung im initialen Geschwindigkeitsfeld Rechnung getragen. Details sind in der Veröffentlichung doi: 10.1017/jfm.2015.725 beschrieben.

Setups:
N    We       Re    D0 (mm)   Initiales Rechengebiet (mm³)   Initiales Gitter (equidistant)   Symmetrie-ebenen

1   442.3   6207.3   1.21              5x5x1.25                      512x512x128 	             1

2   805.2   6370.0   0.7               3x3x0.75                      512x512x128 	             1

3   1520    8750.0   0.7             1.5x1.5x0.75                   1024x1024x512 	             3

Die Weberzahl ist definiert als We=ρU_r^2 D_0/σ und die Reynoldszahl gemäß Re=ρU_r D_0/η . Eine „Domain-Adjustment-Technique“ wird in den Rechenfällen 1 und 2 angewendet. Zur weiteren Reduzierung des Rechenaufwandes werden Symmetrieebenen berücksichtigt. Die verwendeten Stoffwerte sind:

Wassertropfen
Dynamische Viskosität: 1.0 x 10^-3 N s m^-2
Dichte: 1000 kg m^-3
Luft
Dynamische Viskosität: 1.8 x 10^-5 N s m^-2
Dichte: 1.2 kg m^-3

Oberflächenspannung: 72.0 N m^-1

Visualisierung
Die Simulationsdaten wurden im binären Format mit doppelter Genauigkeit (8 Byte) gespeichert. Die Metadaten zur Visualisierung und die Datenstruktur sind in *.xmf gespeichert.
Subject Engineering; Physics
Keyword direct numerical simulation (DNS), drop collision, white noise disturbance
Related Publication Liu, M. and Bothe, D., "Numerical study of head-on droplet collisions at high Weber numbers", Journal of Fluid Mechanics 789, 785-805, 2016 doi: 10.1017/jfm.2015.725
Notes Alle Dateien haben entpackt eine Größe von ca. 1,4 TB. Der Hauptteil dieser Datenmenge kommt durch die funs-Dateien zustande, welche das Feld des Phasenindikators f (VoF-Methode) beinhalten. Diese f-Felder haben außerhalb der Flüssigphase den Wert 0. Aus diesem Grund können diese Felder sehr gut komprimiert werden, benötigen beim Entpacken jedoch viel Speicherplatz.
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We1520.tar.gz
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Published May 25, 2021
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We1520_noise.tar.gz
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We442_noise_step0.tar.gz
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MD5: ce073959f8106c16643dae3e7334a6c4
Teil 1 der Simulation mit der Weber-Zahl We = 442 mit initialer Störung im Geschwindigkeitsfeld.
We442_noise_step1_funs.tar.gz
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Dieses Archiv beinhaltet einen Teil (funs Dateien von funs, pres, velv Dateien) vom 2. Teil der Simulation mit der Weber-Zahl We = 442 mit initialer Störung im Geschwindigkeitsfeld.
We442_noise_step1_pres.tar.gz
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Published May 25, 2021
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MD5: a8d47a517744663f5c5a8dba448803f0
Dieses Archiv beinhaltet einen Teil (pres Dateien von funs, pres, velv Dateien) vom 2. Teil der Simulation mit der Weber-Zahl We = 442 mit initialer Störung im Geschwindigkeitsfeld.
We442_noise_step1_velv1.tar.gz
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Published May 25, 2021
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MD5: 189e95e92387dfd454f42a475a2e4a48
Dieses Archiv beinhaltet einen Teil (velv Dateien (1/3) von funs, pres, velv Dateien) vom 2. Teil der Simulation mit der Weber-Zahl We = 442 mit initialer Störung im Geschwindigkeitsfeld.
We442_noise_step1_velv2.tar.gz
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Published May 25, 2021
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MD5: 9a93f244cbf09f9eb8c3adcfe55137d8
Dieses Archiv beinhaltet einen Teil (velv Dateien (2/3) von funs, pres, velv Dateien) vom 2. Teil der Simulation mit der Weber-Zahl We = 442 mit initialer Störung im Geschwindigkeitsfeld.
We442_noise_step1_velv3.tar.gz
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Published May 25, 2021
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MD5: 028d9b496213f88dc42bbcfdb14d4cd9
Dieses Archiv beinhaltet einen Teil (velv Dateien (3/3) von funs, pres, velv Dateien) vom 2. Teil der Simulation mit der Weber-Zahl We = 442 mit initialer Störung im Geschwindigkeitsfeld.
We442_set.tar.gz
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Published May 25, 2021
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MD5: 067ffa84ef06486c6c70e608c104ab21
Dieses Archiv enthält die Ergebnisse von 10 Simulationen mit der Weber-Zahl We = 442 mit unterschiedlichen initialen Störungen im Geschwindigkeitsfeld.
We442_step0.tar.gz
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Published May 25, 2021
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MD5: 20fc30e876641b8ec35938920432d0db
Teil 1 der Simulation mit der Weber-Zahl We = 442.
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