View source for Model:CVPM

{{Model identity
|Model also known as=Control Volume Permafrost Model
|Model type=Modular
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{{Model identity2
|ModelDomain=Terrestrial
|Spatial dimensions=1D, 2D, 3D
|Spatialscale=Regional-Scale, Landscape-Scale, Watershed-Scale, Reach-Scale, Patch-Scale
|One-line model description=Multidimensional heat-transfer modeling system for permafrost with advanced unfrozen water physics
|Extended model description=The Control Volume Permafrost Model (CVPM) is a modular heat-transfer modeling system designed for scientific and engineering studies in permafrost terrain, and as an educational tool.  CVPM implements the nonlinear heat-transfer equations in 1-D, 2-D, and 3-D cartesian coordinates, as well as in 1-D radial and 2-D cylindrical coordinates.  To accommodate a diversity of geologic settings, a variety of materials can be specified within the model domain, including: organic-rich materials, sedimentary rocks and soils, igneous and metamorphic rocks, ice bodies, borehole fluids, and other engineering materials.  Porous materials are treated as a matrix of mineral and organic particles with pore spaces filled with liquid water, ice, and air.  Liquid water concentrations at temperatures below 0°C due to interfacial, grain-boundary, and curvature effects are found using relationships from condensed matter physics; pressure and pore-water solute effects are included.  A radiogenic heat-production term allows simulations to extend into deep permafrost and underlying bedrock.  CVPM can be used over a broad range of depth, temperature, porosity, water saturation, and solute conditions on either the Earth or Mars.  The model is suitable for applications at spatial scales ranging from centimeters to hundreds of kilometers and at timescales ranging from seconds to thousands of years.  CVPM can act as a stand-alone model, the physics package of a geophysical inverse scheme, or serve as a component within a larger earth modeling system that may include vegetation, surface water, snowpack, atmospheric or other modules of varying complexity.
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{{Model keywords
|Model keywords=permafrost
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{{Model keywords
|Model keywords=heat-transfer
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{{Model keywords
|Model keywords=multidimensional
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{{Model keywords
|Model keywords=Earth
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{{Model keywords
|Model keywords=Mars
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{{Modeler information
|First name=Gary
|Last name=Clow
|Type of contact=Model developer
|Institute / Organization=Institute of Arctic and Alpine Research
|Postal address 1=University of Colorado
|Postal address 2=Campus Box 450
|Town / City=Boulder
|Postal code=80309-0450
|Country=United States
|State=Colorado
|Email address=gclow@colorado.edu
|Phone=1-303-735-7806
}}
{{Model technical information
|Supported platforms=Unix, Linux, Mac OS, Windows
|Programming language=Matlab
|Code optimized=Single Processor
|Start year development=2018
|Does model development still take place?=Yes
|Model availability=As code
|Source code availability=Through CSDMS repository
|Source csdms web address=https://github.com/csdms-contrib/CVPM
|Program license type=GPL v3
|Memory requirements=variable
|Typical run time=variable
}}
{{Input - Output description
|Describe input parameters=Input parameters are provided through several user-supplied files (see the CVPM modeling system user's guide).
|Input format=ASCII, Binary
|Describe output parameters=The state of the system is periodically output to a binary file that can be read by the post-processing and visualization routines (see the CVPM modeling system user's guide).
|Output format=Binary
|Pre-processing software needed?=No
|Post-processing software needed?=No
|Visualization software needed?=No
}}
{{Process description model
|Describe processes represented by the model=The primary processes are heat diffusion and phase change.
|Describe key physical parameters and equations=The key parameters are temperature; density; heat capacity; thermal conductivity; porosity; volume fractions of ice, unfrozen water, and air; degree of water saturation; pore-water solute type and concentration; particle radii.
|Describe length scale and resolution constraints=no known constraints
|Describe time scale and resolution constraints=no known constraints
|Describe any numerical limitations and issues=A documented numerical stability criterium must be adhered to for the solution to remain stable.
}}
{{Model testing}}
{{Users groups model}}
{{Documentation model
|Manual model available=Yes
|Model manual=CVPM_usersguide.pdf
}}
{{Additional comments model}}
{{CSDMS staff part}}
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==Introduction==

== History ==

== References  ==
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== Issues ==

== Help ==
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== Input Files ==

== Output Files ==