SVHEAT™ is designed for the calculation of conductive and convective heat movement in frozen or unfrozen soils. It has the ability to handle building foundations, pipelines, or thermosyphons and the input of detailed climate weather station data to calculate the influence of atmospheric conditions. The impact of climatic conditions can be determined through an advanced snow boundary condition.

The SVOFFICE™5 release of SVHEAT™ software contains the following specific improvements...


Download PDF Feature SheetDownload PDF Feature Sheet

Product OverviewProduct Overview

Easy Implementation of Advanced Climate Boundary Conditions

The SVHEAT™ software package continues to be a market-leading thermal analysis package which offers both 2D and 3D analysis. It is applicable to geotechnical, civil, and mining-related engineering projects.

The product can be coupled with SVFLUX™ and/or SVAIRFLOW™ to model complex situations.

SVHEAT™ is designed for the calculation of conductive and convective heat movement in saturated or unsaturated soils. The software implements the ability to handle thermosyphons and the input of detailed climate weather stations data to calculate the influence of atmospheric conditions. Advanced boundary conditions allow the accomodation of the thermally insulating effects of snow on a boundary and is able to calculate geothermal gradients and the movement of freezing fronts. SVHEAT™ allows you to analyze steady-state or transient thermal conduction and

convection models. Convection models may be created by coupling with SVFLUX™. User defined soil properties define the latent heat released or absorbed during the ice-water phase change.

SVHEAT™ is currently being used by universities and consultants around the world. Feel free to contact us for more information.


Key features and enhancements of SVFLUX™:
  • Re-organized Menu: the menu system within the software has been reorganized slightly in a clearer format. Primary functions are organized in a left to right format along the menu.
  • Re-designed Project Manager: the project manager dialog has been redesigned to greatly simplify its usage. It also allows the advanced abilities of model grouping and linking which is particularly useful in large and complex modeling sequences.
  • Fully Integrated 1D / 2D / 3D Geotechnical Suite - performs conductive or convective analysis of problems and coupling of thermal, hydraulic and airflow (THA) processes are possible.
  • Automatic mesh generation and mesh refinement
  • Model both conductive and convective heat flux, in frozen or unfrozen conditions
  • Easy to use - quickly design models based on an intuitive CAD user interface and logical feature layout allowing creation and completion of models in hours or days .. not weeks or months!
  • Climatic interface SVFLUX™ / SVHEAT™ allows entry of detailed climatic data. Implementation of the rigorous Fredlund-Wilson-Penman climatic interface allows calculation of actual evaporation at the ground surface
  • Snow - modeling of the insulating effects of snow is possible with advanced boundary conditions
  • Continuous Innovation - Quick addition of features for our customers. New versions are generated every two - four weeks!
  • World Class support - highly dedicated team with tracking and fast response to all raised issues - typically within 24 - 48 hours.
  • Model customization through a powerful math scripting interface*

* SVHEAT™ uses a math scripting language to solve numerical models. This easy-to-understand script requires no programming skills and allows users to customize our formulations.

Download PDF Feature Sheet

Comprehensive / Comparative
List of Features

Applications and InstrumentationApplications and Instrumentation

Common Applications:

The following list is a collection of the most common applications for SVHEAT™. Most of them are included as sample models in our free software download.

  • Model the depth of freezing during winter months
  • Model the application of thermosyphons to freeze the ground
  • Ground freezing for soil stabilization, including the use of freezing pipes around mine shafts or thermosyphons on top of earth dams
  • Simulate the process in borehole thermal energy storage systems (BTES), which includes simulating the heat injection into the boreholes, the heat that can be stored and then extracted from the BTES, and the potential thermal losses in the ground
  • Model heat flow in underground foundations
  • Freeze-thaw action beneath airport runways
  • Model geothermal reservoirs: locating re-injection wells, production forecasting, volume calculation, heat resource estimation
  • Perform general geothermal modeling of canals
  • Model mine stopes and other underground mine structures by coupling SVHEAT™ with SVFLUX™. Calculate the ice/water interface and track frozen zones in the subsurface
  • Perform climatic analysis of earth covers by coupling SVHEAT™ with SVFLUX™
  • Degradation of permafrost beneath warm buildings or around a warm, buried pipeline
  • Frost depth penetration beneath chilled structures such as a recreational ice surface or a highway during winter
  • Model the thermal regime around ponds, roadways
  • Development of a frost bulb around a chilled pipeline
  • Effectiveness of various insulation alternatives for reducing freezing and / or thawing


These links are provided for the benefit of the public. Interesting and useful links related to the modeling and science of soil mechanics are presented. If you have a link that involves instrumentation related to one of our software packages, please contact SoilVision Systems Ltd. No particular endorsement of these links is implied by SoilVision Systems Ltd.


Company Product Name Description
GCTS Fredlund Thermal Conductivity Sensor Unsaturated Soil sensor for measuring soil suction and temperature in the field.
RST Instruments Thermistor Strings Curve matched to desired temperature tolerance over selected temperature ranges, permitting the use of multiple sensors with a single readout or data logger.
RST Instruments Digital ThermArray System Provides precision thermal gradient information for geotechnical, geothermal, and marine applications.
Geokon Thermistor Probes Used for remote readings such as measuring hydration and cooling temperatures in placement of mass concrete.
Geokon Thermistor Strings Comprises a number of individual 3800 sensors mounted in a rugged, multi-conductor cables for multiple temperature measurements in a single borehole.
Geokon Temperature Sensors DVibrating Wire Temperature Sensors or Fiber Optic Temperarture sensors.
Geokon High Temperature Piezometer Designed for applications where the temperature may be as high as 230°C.

Customers and TestimonialsCustomers and Testimonials

With every new piece of software there is always a learning curve. While I was learning to use SVHEAT™, SoilVision was there every step of the way to help me through hurdles I encountered. When I needed a change or an improvement in the software, the development team responded promptly to my requests and made changes with impressive speed. SoilVision's SVHEAT™ has proved itself be an invaluable tool for designing structures in arctic conditions and permafrost soils. Predicting the results of a changed thermal regime allows us to design stable long term structures for our clients. SVHeat's excellent graphical and 3-dimensional output encourages an intuitive understanding of the dynamics involved. I would recommend the SVHEAT™ software and SoilVision's support to anyone.”

Torsten Mayrberger, Ph.D
Geotechnical Engineer
PND Engineers, Inc., Alaska

I do think this type of modeling should be more routinely done and until now there has not been an easy way of doing this. Beyond a few hiccups in setting up the model (mostly lack of CAD software experience on my part) and then the subsequent setting up and understanding of physical properties and units (small learning curve) the model ran and calculated quickly with good visual results. I would have no reservations in recommending SVHEAT™ heat modeling to better understand heat flow into borehole heat exchangers in a residential geothermal installation. This understanding can be applicable to borehole spacing and depth of drilling for any particular ground and aquifers that intersect the boreholes.”

Brad Ford, P.Geol.
Potential Energy Geothermal

My study required the input of large data including surface temperatures ranging from 350°C to -300°C. The flexibility and versatility in SVHEAT™ allowed me to run thermal simulations with sudden changes in boundary conditions using non-linear material properties.”

Elsa Tan
Graduate Student
University of Saskatchewan

Modelling can be time consuming but SVHEAT™ improved our efficiency by allowing us to use AutoCAD™ drawings and automatic mesh generation while managing the input data through a database.”

Michel Noël, M.Sc.A., P.Eng.
Senior Engineer, GeoEnvironmental Engineering
SRK Consulting Ltd.

Top 10 ReasonsTop 10 Reasons to Purchase

The investment in geotechnical / hydrogeological software is an important decision for most consulting firms. Software must perform well and yield results in a limited timeframe such that reports can be completed on time and under budget. We recognize this at SoilVision Systems Ltd. and and have worked hard over the past number of years to provide software which is both easy to use and technologically advanced. We believe that the current SVOFFICE™5 software product is the best software suite currently available for geotechnical and hydrogeological applications. Listed below are a few of the reasons why your firm would benefit from our software from the perspective of a manager.

1. 3D Modeling Solutions
  • Modeling of systems which are not adequately represented by a simplified 2D cross section may be accomplished in full 3D. Examples include regional flow, levee analysis, and planar geometry.
2. Advanced Slope Stability Analysis
  • With the highly advanced SVSLOPE® slope stability analysis package, your company will have access to the most comprehensive array of deterministic and probabilistic methods of limit equilibrium analysis methods.
3. Advanced Model Coupling
  • Coupling of the air/water/thermal phases allows more comprehensive analysis of i) cover designs and, ii) waste rock flow, and iii) various other applications.
  • Coupled density-dependant flow allows handling of salt-water/ fresh water potash mine tailings scenarios and tidal inflow scenarios.
4. Automatic Mesh Generation and Refinement 5. Spatially Varying Material Properties
  • Material properties may now be set to vary spatially in any particular region of the model domain. This is available in our SVSLOPE® and SVFLUX™ packages
6. Product Integration
  • Products support highly integrated and coupled solutions. i.e. Rainfall on an unsaturated slope potentially causing instability.
7. Comprehensive Probabilistic Analysis
  • Monte Carlo, APEM, Latin Hypercube and other types of probabilistic analysis may be carried out in our SVSLOPE® package. Monte Carlo analysis for steady state models can be carried out in our SVFLUX™ package.
8. Customized Solutions
  • Our mathematical scripting language can be used to build your own customized finite element solutions!
9. Extensive Soil Database
  • Our SOILVISION® Database of unsaturated hydraulic properties includes laboratory data on over 6500 soils and 24 theoretical methods of estimating unsaturated hydraulic properties.
10. World Class Support
  • Highly dedicated team with tracking and fast response to all raised issues - typically within 24 - 48 hours.