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.
For liquid properties see doi: 10.1017/jfm.2012.94.
Methods used:
Volume of Fluid Method
Three-material PLIC reconstruction (compare: arXiv: 2105.08972 and arXiv: 2104.11108)
static contact angle reconstruction (compare: arXiv: 2104.11108)
CSS surface force model for three immiscible components with a film stabilisation is utilised (compare: arXiv: 2104.11108)
VISUS PLIC plugin, December 2021
The HDF5 Data can be loaded with Paraview, by opening fs3d.xmf which contains the data structure.
The VISUS PLIC Plugin https://github.com/UniStuttgart-VISUS/tpf can be used for reproducing the pictures from the final report.
Each tar.gz file contains the following files:
fs3d.xmf 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
fun3XXXX.hdf Volume fraction of first liquid phase (G50) in picture XXXX
funsXXXX.hdf Volume fractions of second liquid phase (SOM5) in picture XXXX
n3phXXXX.hdf Interface orientation of second liquid phase in picture XXXX
netz_xyz.hdf Grid corner points (i.e. for Paraview)
initialization_data.txt Information on the initialized droplets (Radius, Velocity, Properties, Domain). Here, f always indicates the second liquid, f3 the first liquid, fc the gaseous continuous phase (like in FS3D Software). G50 is associated with liquid 1 (f3) and SOM5 with liquid 2 (f). For an overview, the content of these files is also given below.
Coalescence Case from final report of SFB-TRR75 Project A7
Dimensions in all directions: -0.04 ... 0.04 cm
Points per Direction: 128
Initialized Center of liquid 2 (f) : [0.008798572807385, 0.011201427192615,0.0] cm
Initialized Radius of liquid 2 (f): 0.0097265 cm
Initialized Velocity of liquid 2 (f) in x as well as y direction : -69.8267946421716 cm/s
Initialized Center of liquid 1 (f3) : [-0.01, -0.01,0.0] cm
Initialized Radius of liquid 1 (f3) : 0.0093428 cm
Initialized Velocity of liquid 1 (f3) in x as well as y direction : 69.8267946421716 cm/s
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°
Separation Case from final report of SFB-TRR75 Project A7
Dimensions in x and y directions: -0.05 ... 0.07 cm
Dimension in z direction: -0.04 ... 0.04 cm
Points per x/y Direction: 192
Points per z Direction: 128
Initialized Center of liquid 2 (f): [0.009815261989454, 0.010184738010546,0.0] cm
Initialized Radius of liquid 2 (f): 0.0097225 cm
Initialized Velocity of liquid 2 (f) in x as well as y direction : -131.20366324916 cm/s
Initialized Center of liquid 1 (f3): [-0.01, -0.01, 0.0] cm
Initialized Radius of liquid 1 (f3): 0.0093428 cm
Initialized Velocity of liquid 1 (f3) in x as well as y direction : 131.20366324916 cm/s
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°
