Model:CVFEM Rift2D

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CVFEM Rift2D

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Modular Model part of larger framework Note on status model Date note status model Incorporated models or components: Spatial dimensions 2D Spatial extent Continental Model domain Hydrology, Geodynamic One-line model description multi-physics numerical model that simulates rock deformation, fluid flow, solute transport and heat transfer in response to ice sheet loading of multiple cycles Extended model description We have developed a hybrid numerical model at a continental scale via control volume finite element (finite volume) and regular finite element methods to evaluate the stress variation, pore pressure evolution, brine migration, solute transport and heat transfer in the subsurface formations in response to ice sheet loading of multiple glacial cycles. Keywords: Name Yipeng Zhang Type of contact Model developer Institute / Organization New Mexico Institute of Mining and Technology Postal address 1 PO Box 2255 Postal address 2 801 Leroy Place Town / City Socorro Postal code 87801 State Country United States Email address zhangyipengjd@gmail.com Phone 8147772015 Fax Name Mark Person Type of contact Project manager Institute / Organization New Mexico Institute of Mining and Technology Postal address 1 Dept. of Earth and Environmental Sciences Postal address 2 Town / City Socorro Postal code 87801 State New Mexico Country United States Email address mark.person@nmt.edu Phone Fax Supported platforms Windows Other platform Programming language Fortran77, Matlab Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2015 Does model development still take place? Yes If above answer is no, provide end year model development Code development status Active When did you indicate the 'code development status'? 2020 Model availability As code Source code availability (Or provide future intension) Through CSDMS repository Source web address Source csdms web address https://github.com/csdms-contrib/CVFEM-Rift2D Program license type GPL v3 Program license type other Memory requirements Typical run time Describe input parameters Input format ASCII Other input format Describe output parameters Output format ASCII Other output format Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? Yes If above answer is yes Other visualization software Tecplot Describe processes represented by the model The four primary components of our multi-physics code include geomechanical, hydrologic, solute transport and heat transfer modules. The geomechanical module calculates displacement of an elastic lithosphere disturbed by an ice sheet load. Transient geomechanical deformation is represented by one-dimensional (lateral) viscous asthenosphere flow. Our geomechanical module is partially coupled to the hydrologic module by providing the rate of change in the mean normal stress. Mean normal stress change rate is included as a source term in the groundwater flow equation driving flow. Flow is also influenced by changes in the top specified hydraulic head boundary condition. We implement two-way coupling between fluid flow, solute transport and heat transfer module via density and viscosity equations of state. Three additional modules in our multi-physics code calculate changes to the upper hydraulic and thermal boundary conditions or alter the hydraulic transport properties (permeability) due to hydrogeomechanical failure. These include ice sheet evolution, permafrost, and failure analysis modules. Ice sheet thickness determines both the vertical load in the geomechanical module as well as the hydraulic head boundary condition at the land surface in the hydrologic module. In this study we adopted a simple parabolic polynomial equation to represent the idealized geometry of an ice sheet’s cross section in the ice sheet evolution module. We solved for permafrost formation at and below the land surface using a suite of one-dimensional heat transfer models. We allowed for grid growth within the permafrost module to account for changes in ice sheet thickness. A failure analysis module was used to modify permeability due to hydromechanical failure. We adopted the effective Coulomb’s Failure Stress change criterion from Ge et al.(2009) to assess regions of failure during glaciations. Describe key physical parameters and equations Describe length scale and resolution constraints Describe time scale and resolution constraints Describe any numerical limitations and issues Describe available calibration data sets Upload calibration data sets if available: Describe available test data sets Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments This part will be filled out by CSDMS staff OpenMI compliant No but possible BMI compliant No but possible WMT component No but possible PyMT component Is this a data component Can be coupled with:

Model info Authors Yipeng Zhang Person Source code View in CSDMS GitHub repository Model citations Nr. of publications: 1 Total citations: 11 h-index: 1 m-quotient: 0.14 QR-code Link to this page Other models by author CVFEM Rift2D

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Nr. of publications:	1
Total citations:	11
h-index:	1
m-quotient:	0.14

Featured publication(s)	Year	Model described	Type of Reference	Citations
Zhang, Yipeng; Person, Mark; Voller, Vaughan; Cohen, Denis; McIntosh, Jennifer; Grapenthin, Ronni; 2018. Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration Within Sedimentary Basins and the Crystalline Basement. Water Resources Research, 54, 7577–7602. 10.1029/2017WR022464 (View/edit entry)	2018	CVFEM Rift2D	Model overview	11
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