*** Data corresponding to the publication: "Interparticle friction in sheared dense suspensions: Comparison of the viscous and frictional rheology descriptions" ***
Authors: W. Peerbooms (1), T. Nadorp (1), A.E.D.M. van der Heijden (1,2), W.-P. Breugem (1)
(1) Delft University of Technology, Faculty of Mechanical, Maritime and Materials Engineering, Process & Energy department
(2) Netherlands Organization for Applied Scientific Research (TNO), Department of Energetic Materials

Corresponding author: W.-P. Breugem
Contact information: W.P.Breugem@tudelft.nl

*** General Introduction ***
This dataset contains data underlying the figures presented in the publication: 
Wouter Peerbooms, Tim Nadorp, Antoine van der Heijden, Wim-Paul Breugem; Interparticle friction in sheared dense suspensions: Comparison of the viscous and frictional rheology descriptions.
J. Rheol. 1 March 2024; 68 (2): 263–283. https://doi.org/10.1122/8.0000729

The authors gratefully acknowledge Delft University of Technology, the funding of this project under a TU Delft/TNO agreement, and the support of SURF Cooperative for the use of the
Dutch national e-infrastructure (Snellius) under Computing Grant No. 2020.036 from the Dutch Research Council (NWO).

*** Description of the data ***
The data is divided in .txt files for most figures in the article.
The data in the files is organized as follows:

*Fig4a.txt
Contains the mean solid volume fraction as a function the wall-normal coordinate for the cases with muc=0.
The headerline denotes the case and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean solid volume fraction for the case with muc=0 and phib=0.1
3) mean solid volume fraction for the case with muc=0 and phib=0.2
4) mean solid volume fraction for the case with muc=0 and phib=0.3
5) mean solid volume fraction for the case with muc=0 and phib=0.4
6) mean solid volume fraction for the case with muc=0 and phib=0.45
7) mean solid volume fraction for the case with muc=0 and phib=0.5
8) mean solid volume fraction for the case with muc=0 and phib=0.55
9) mean solid volume fraction for the case with muc=0 and phib=0.6

*Fig4b.txt
Contains the mean solid volume fraction as a function the wall-normal coordinate for the cases with muc=0.2.
The headerline denotes the case and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean solid volume fraction for the case with muc=0.2 and phib=0.1
3) mean solid volume fraction for the case with muc=0.2 and phib=0.2
4) mean solid volume fraction for the case with muc=0.2 and phib=0.3
5) mean solid volume fraction for the case with muc=0.2 and phib=0.4
6) mean solid volume fraction for the case with muc=0.2 and phib=0.45
7) mean solid volume fraction for the case with muc=0.2 and phib=0.5
8) mean solid volume fraction for the case with muc=0.2 and phib=0.55
9) mean solid volume fraction for the case with muc=0.2 and phib=0.6

*Fig4c.txt
Contains the mean solid volume fraction as a function the wall-normal coordinate for the cases with muc=0.39.
The headerline denotes the case and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean solid volume fraction for the case with muc=0.39 and phib=0.1
3) mean solid volume fraction for the case with muc=0.39 and phib=0.2
4) mean solid volume fraction for the case with muc=0.39 and phib=0.3
5) mean solid volume fraction for the case with muc=0.39 and phib=0.4
6) mean solid volume fraction for the case with muc=0.39 and phib=0.45
7) mean solid volume fraction for the case with muc=0.39 and phib=0.5
8) mean solid volume fraction for the case with muc=0.39 and phib=0.55
9) mean solid volume fraction for the case with muc=0.39 and phib=0.6

*Fig5a.txt
Contains the mean intrinsic fluid velocity normalized by the wall velocity as a function the wall-normal coordinate for the cases with muc=0.
The headerline denotes the case and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.1
3) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.2
4) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.3
5) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.4
6) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.45
7) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.5
8) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.55
9) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0 and phib=0.6

*Fig5b.txt
Contains the mean intrinsic fluid velocity normalized by the wall velocity as a function the wall-normal coordinate for the cases with muc=0.2.
The headerline denotes the case and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.1
3) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.2
4) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.3
5) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.4
6) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.45
7) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.5
8) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.55
9) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.2 and phib=0.6

*Fig5c.txt
Contains the mean intrinsic fluid velocity normalized by the wall velocity as a function the wall-normal coordinate for the cases with muc=0.39.
The headerline denotes the case and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.1
3) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.2
4) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.3
5) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.4
6) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.45
7) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.5
8) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.55
9) mean intrinsic fluid velocity normalized by the wall velocity for the case with muc=0.39 and phib=0.6

*Fig6.txt
Contains the mean intrinsic velocity normalized by the wall velocity as a function the wall-normal coordinate for the cases with phib=0.4 and muc=0 and 0.39.
The headerline denotes the variable and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particcle diameter
2) muc0phib40_vf mean intrinsic fluid velocity normalized by the wall velocity for the case with phib=0.4 and muc=0
3) muc0phib40_vp mean intrinsic particle velocity normalized by the wall velocity for the case with phib=0.4 and muc=0
4) muc0dot39phib40_vf mean intrinsic fluid velocity normalized by the wall velocity for the case with phib=0.4 and muc=0.39
5) muc0dot39phib40_vp mean intrinsic particle velocity normalized by the wall velocity for the case with phib=0.4 and muc=0.39

*Fig8.txt
Contains the Particle Pair Distribution Function (PPDF) averaged over a shell (1<r/d<1.05) for the cases with muc=0 and 0.39 for volume fractions ranging from phib=0.2 to 0.5.
The headerline denotes the case and the columns correspond to:
1) theta/pi angle defined from the positive y-axis
2) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0 and phib=0.2
3) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0 and phib=0.3
4) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0 and phib=0.4
5) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0 and phib=0.5
6) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0.39 and phib=0.2
7) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0.39 and phib=0.3
8) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0.39 and phib=0.4
9) PPDF averaged over a shell (1<r/d<1.05) for the case with muc=0.39 and phib=0.5

*Fig9a.txt
Contains the mean shear stress components for the case with muc=0 and phib=0.4.
The headerline denotes the stress component and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean viscous shear stress
3) mean particle shear stress
4) mean hydrodynamic contribution to the particle shear stress
5) mean contact contribution to the particle shear stress
6) mean total shear stress

*Fig9b.txt
Contains the mean shear stress components for the case with muc=0.2 and phib=0.4.
The headerline denotes the stress component and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean viscous shear stress
3) mean particle shear stress
4) mean hydrodynamic contribution to the particle shear stress
5) mean contact contribution to the particle shear stress
6) mean total shear stress

*Fig9c.txt
Contains the mean shear stress components for the case with muc=0.39 and phib=0.4.
The headerline denotes the stress component and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean viscous shear stress
3) mean particle shear stress
4) mean hydrodynamic contribution to the particle shear stress
5) mean contact contribution to the particle shear stress
6) mean total shear stress

*Fig10a.txt
Contains the mean wall-normal stress components for the case with muc=0 and phib=0.4.
The headerline denotes the stress component and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean fluid pressure
3) mean wall-normal particle stress
4) mean hydrodynamic contribution to the wall-normal particle stress
5) mean contact contribution to the wall-normal particle stress
6) mean total wall-normal stress

*Fig10b.txt
Contains the mean wall-normal stress components for the case with muc=0.2 and phib=0.4.
The headerline denotes the stress component and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean fluid pressure
3) mean wall-normal particle stress
4) mean hydrodynamic contribution to the wall-normal particle stress
5) mean contact contribution to the wall-normal particle stress
6) mean total wall-normal stress

*Fig10c.txt
Contains the mean wall-normal stress components for the case with muc=0.39 and phib=0.4.
The headerline denotes the stress component and the columns correspond to:
1) z/d wall-normal coordinate normalized by the particle diameter
2) mean fluid pressure
3) mean wall-normal particle stress
4) mean hydrodynamic contribution to the wall-normal particle stress
5) mean contact contribution to the wall-normal particle stress
6) mean total wall-normal stress

*Fig11_12.txt
Contains the relative viscosity and its hydrodynamic and contact contributions.
The headerline denotes the variable and the columns correspond to:
1) muc Coulomb coefficient of sliding friction
2) phib bulk volume fraction
3) phic core volume fraction
4) etar relative viscosity
5) etar_hydro hydrodynamic contribution to the relative viscosity
6) etar_contact contact contribution to the relative viscosity

*Fig13.txt
Contains the frictional rheology data.
The headerline denotes the variable and the columns correspond to:
1) muc Coulomb coefficient of sliding friction
2) phib bulk volume fraction
3) phic core volume fraction
4) Iv viscous number
5) mu macroscopic friction coefficient
6) mu_hydro hydrodynamic contribution to the macroscopic friction coefficient
7) mu_contact contact contribution to the macroscopic friction coefficient

*Fig14.txt
Contains the mean normal particle stresses normalized by the total shear stress.
The headerline denotes the variable and the columns correspond to:
1) muc Coulomb coefficient of sliding friction
2) phib bulk volume fraction
3) phic core volume fraction
4) sp11 streamwise particle stress normalized by the total shear stress
5) sp22 wall-normal particle stress normalized by the total shear stress
6) sp33 spanwise particle stress normalized by the total shear stress

*Fig15.txt
Contains the mean normal stress differences normalized by the total shear stress.
The headerline denotes the variable and the columns correspond to:
1) muc Coulomb coefficient of sliding friction
2) phib bulk volume fraction
3) phic core volume fraction
4) N1 first normal stress difference normalized by the total shear stress
5) N2 second normal stress difference normalized by the total shear stress

*Fig16.txt
Contains the frictinal rheology data based on different stress contributions for the cases with muc=0 and 0.39.
The headerline denotes the variable and the columns correspond to:
1) muc Coulomb coefficient of sliding friction
2) phib bulk volume fraction
3) phic core volume fraction
4) Iv viscous number calculated using the wall-normal particle stress
5) mu macroscopic friction coefficient using the wall-normal particle stress
6) Iv_s22 viscous number calculated using the total wall-normal stress
7) mu_s22 macroscopic friction coefficient calculated using the total wall-normal stress
8) Iv_s22pcontact viscous number calculated using the contact contribution of the wall-normal particle stress
9) mu_s22pcontact macroscopic friction coefficient calculated using the contact contribution of the wall-normal particle stress

