DOI: 10.18419/darus-2489
title: Exemplary Simulation Results for the Collision of Fully Wetting immiscible Liquids SOM5+G50

description: Simulation results of the Collision of two droplets of the fully wetting immiscible liquids SOM5 (Silicon Oil M5) and G50 (Glycerol-Water solution 50%) produced with the in-house of the Institute of Aerospace Thermodynamics code FS3D for the final report of the SFB-TRR75. &lt;br&gt;
For liquid properties see &lt;a href="https://doi.org/10.1017/jfm.2012.94"&gt;doi: 10.1017/jfm.2012.94&lt;/a&gt;.&lt;br&gt;&lt;br&gt;

Methods used:
&lt;ul&gt;
&lt;li&gt;Volume of Fluid Method&lt;/li&gt;
&lt;li&gt;Three-material PLIC reconstruction (compare: &lt;a href="https://arxiv.org/abs/2105.08972"&gt;arXiv: 2105.08972&lt;/a&gt; and &lt;a href="https://arxiv.org/abs/2104.11108"&gt;arXiv: 2104.11108&lt;/a&gt;)&lt;/li&gt;
&lt;li&gt;static contact angle reconstruction (compare: &lt;a href="https://arxiv.org/abs/2104.11108"&gt;arXiv: 2104.11108&lt;/a&gt;)&lt;/li&gt;
&lt;li&gt;CSS surface force model for three immiscible components with a film stabilisation is utilised (compare: &lt;a href="https://arxiv.org/abs/2104.11108"&gt;arXiv: 2104.11108&lt;/a&gt;)&lt;/li&gt;
&lt;/ul&gt;
description: VISUS PLIC plugin, December 2021
description: The HDF5 Data can be loaded with Paraview, by opening fs3d.xmf which contains the data structure.<br><br>

The VISUS PLIC Plugin https://github.com/UniStuttgart-VISUS/tpf can be used for reproducing the pictures from the final report. <br><br>

Each tar.gz file contains the following files:

<b>fs3d.xmf</b> Timeline of the hdf files, can be loaded to paraview with Standard Paraview Readers (tested for Paraview 5.8.1), contains the data structure, i.e. the timeline associated to the pictures
<b>fun3XXXX.hdf</b> Volume fraction of first liquid phase (G50) in picture XXXX
<b>funsXXXX.hdf</b> Volume fractions of second liquid phase (SOM5) in picture XXXX
<b>n3phXXXX.hdf</b> Interface orientation of second liquid phase in picture XXXX
<b>netz_xyz.hdf</b> Grid corner points (i.e. for Paraview)
<b>initialization_data.txt</b> Information on the initialized droplets (Radius, Velocity, Properties, Domain). Here, <code>f</code> always indicates the second liquid, <code>f3</code> the first liquid, <code>fc</code> the gaseous continuous phase (like in FS3D Software). G50 is associated with <code>liquid 1</code> (f3) and SOM5 with <code>liquid 2</code> (f). For an overview, the content of these files is also given below. <br>

Coalescence Case from final report of SFB-TRR75 Project A7<br>

Dimensions in all directions: -0.04 ... 0.04 cm <br>
Points per Direction: 128<br>
Initialized Center of liquid 2 (f) : [0.008798572807385, 0.011201427192615,0.0] cm<br>
Initialized Radius of liquid 2 (f): 0.0097265 cm<br>
Initialized Velocity of liquid 2 (f) in x as well as y direction : -69.8267946421716 cm/s<br>
Initialized Center of liquid 1 (f3) : [-0.01, -0.01,0.0] cm<br>
Initialized Radius of liquid 1 (f3) : 0.0093428 cm<br>
Initialized Velocity of liquid 1 (f3) in x as well as y direction : 69.8267946421716 cm/s<br><br>

Densities:

 of liquid 2: rhof=0.9134 g/cm^3,
 of liquid 1: rhof3=1.126 g/cm^3, 
 of the gas: rhofc=0.00119 g/cm^3
Viscosities:
 of liquid 2: muef=0.0457 g/(cm s), 
 of liquid 1: muef3=0.06 g/(cm s), 
 of the gas: muefc=0.0001824 g/(cm s)
Interfacial tensions: 
 of the liquid 2-gas interface: sigma=19.5 g/s^2, 
 of the liquid 1-gas interface: sigma_f3=68.6 g/s^2, 
 of the liquid 1-liquid 2 interface: sigma_f3f= 34.3 g/s^2
Static imposed contact angle: 1e-12°<br><br>

Separation Case from final report of SFB-TRR75 Project A7<br>

Dimensions in x and y directions: -0.05 ... 0.07 cm <br>
Dimension in z direction: -0.04 ... 0.04 cm <br>
Points per x/y Direction: 192<br>
Points per z Direction: 128<br>
Initialized Center of liquid 2 (f): [0.009815261989454, 0.010184738010546,0.0] cm<br>
Initialized Radius of liquid 2 (f): 0.0097225 cm<br>
Initialized Velocity of liquid 2 (f) in x as well as y direction : -131.20366324916 cm/s<br>
Initialized Center of liquid 1 (f3): [-0.01, -0.01, 0.0] cm<br>
Initialized Radius of liquid 1 (f3): 0.0093428 cm<br>
Initialized Velocity of liquid 1 (f3) in x as well as y direction : 131.20366324916 cm/s<br><br>

Densities:
 of liquid 2: rhof=0.9134 g/cm^3, 
 of liquid 1: rhof3=1.126 g/cm^3, 
 of the gas: rhofc=0.00119 g/cm^3
Viscosities: 
 of liquid 2: muef=0.0457 g/(cm s), 
 of liquid 1: muef3=0.06 g/(cm s), 
 of the gas: muefc=0.0001824 g/(cm s)
Interfacial tensions: 
 of the liquid 2-gas interface: sigma=19.5 g/s^2, 
 of the liquid 2-gas interface: sigma_sg=68.6 g/s^2, 
 of the liquid 2-gas interface: sigma_sl= 34.3 g/s^2
Static imposed contact angle: 1e-12°