27cdfbea-fbaa-2baa-e063-0937940a2203 English nonGeographicDataset non geographic dataset British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-04-30 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608315 MFIX input and output files for the study of granular rheology using mixtures with varying size, density, particle friction, and flow geometry 2023-11-06 creation http://data.bgs.ac.uk/id/dataHolding/13608315 MFIX (Multiphase Flow with Interphase eXchanges) simulation input files and raw particle output files. The study was published in Breard, E. C., Fullard, L., & Dufek, J. (2024). Rheology of granular mixtures with varying size, density, particle friction, and flow geometry. Physical Review Fluids, 9(5), 054303. Description of files 1. Input particle input file (*.dat) 2. VELOCITY* and FORCES* files exported at 10 Hz The simulation are all done as pressure-controlled shear cells where the x and z axes are periodic boundaries, and the top and bottom boundaries are solid rough plates. The simulations are split in three types: MONODISPERSE, BIDISPERSE and TRIDISPERSE, where particle size (in mm), is indicated in the naming of the directory. The, in each set of simulation, the naming is with the following structure: 20N_0.0001ms, where the first number indicates the confining pressure (20 Newtons) and the second indicate the top plate moving velocity in the x-direction (0.0001 m/s). Note the simulations were run with MFIX-18. The MFIX code that is modified from the core code from the Department of Energy (DOE) is all present. The missing core code can be downloaded from the DOE department https://mfix.netl.doe.gov/. Eric Breard University of Edinburgh not available originator Josef Dufek University of Oregon not available originator Luke Fullard Horizons Regional Council not available originator Enquiries British Geological Survey United Kingdom not available distributor Enquiries British Geological Survey United Kingdom not available pointOfContact notApplicable https://resources.bgs.ac.uk/images/geonetworkThumbs/27cdfbea-fbaa-2baa-e063-0937940a2203.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Pyroclastic rocks Rheology Lava flows BGS Thesaurus of Geosciences 2022 revision NGDC Deposited Data Citable Data dataCentre NERC_DDC otherRestrictions licenceOGL Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" English geoscientificInformation 2022-11-01 2023-10-30 DAT witheld VELOCITY* and FORCES* files witheld Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item186553 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/7ca93ca3-e086-4ed3-905f-2ec6b96f4e13 WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Breard, E., Fullard, L., Dufek, J. (2024). MFIX input and output files for the study of granular rheology using mixtures with varying size, density, particle friction, and flow geometry. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/7ca93ca3-e086-4ed3-905f-2ec6b96f4e13 information nonGeographicDataset non geographic dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false We use the discrete element method to study rheology of dense granular media, taking into account a range of particle size, density, and frictional properties that spans quasistatic to inertial regimes. We find that the stress ratio, , and concentration, , are functions of the inertial number when volume averaging over the contributions of each solid phase is used to compute the mean particle density, friction, and size. In addition, critical packing fraction is linked with distribution skewness and polydispersity, particle friction independent of size distribution. Guided by Kim and Kamrin, Phys. Rev. Lett. 125, 088002, 2020, we put forward a rheological scaling power-law by which all our monodisperse and polydisperse data is collapsed, which relies on dimensionless granular temperature, concentration, and inertial number. The model represents an excellent combination of ⁡()-rheology with kinetic theory, thus enabling the unification of all local and non-local rheology data on one single master curve.