Plan view
horizontal slice through the energy pile
Object-oriented geo-energy simulation
Full-physics geo-energy design, ready to inspect.
Terra keeps geometry, mesh, materials, boundary conditions, solver cases, and results connected in one object-oriented desktop model. The same THM engine supports energy piles, boreholes, buried collectors, radiant floors, and thermal storage studies.
- One workflow for geometry, mesh, solve, and 3-D results
- Plan and section views from the same finite-element field
- Energy piles, boreholes, buried collectors, radiant floors, and storage fields
- Validated against field data, analytical theory, and independent reference models
0.04-0.08 °C MAE vs field data
0.9997 surrogate R2
985kx faster sweeps
Section view
vertical section through the pile axis
Same model object
20-day in-situ test
MAE 0.04-0.08 °C
One application carries the whole coupled workflow — geometry, mesh, thermo-hydro-mechanical solve, AI surrogate, and 3-D results — across geo-energy systems on your desktop, no cloud required.
Object-oriented core
Terra builds simulations from engineering objects
A Terra model is a connected set of geometry, material, boundary, physics, solver, and result objects. The setup keeps its engineering intent as it moves from CAD faces to mesh regions to coupled results.
That architecture matters when a model grows. Faces keep their boundary conditions, materials stay reusable, solver cases remain traceable, and results point back to the objects that created them.
Terra stores the project as named parts you can inspect, revise, and reuse, rather than as a flat input file.
See the object modelThe parent object that holds the engineering record.
CAD entities keep stable meaning before meshing.
Soils and rocks carry their constitutive data.
Temperatures and constraints stay tied to geometry.
Heat, flow, deformation, and pipe exchange share state.
Settings, inputs, and outputs stay reproducible.
3-D fields and curves trace back to the model objects.
How it fits together
One pipeline, from geometry to a sized geo-energy system
Terra keeps the engineering objects connected: geometry, mesh, materials, boundary conditions, solver cases, surrogate runs, and results all belong to one model.
Object-oriented model
Native coupled engine
Local desktop workflow
Object model
Geometry, mesh, materials, pipes, loads, boundary conditions, solver cases, and results stay attached to the project tree.
GeometryMeshMaterialsBCsCasesResults
Translator
The model is written into native solver input with traceable names, units, and object references.
THM engine
A coupled thermo-hydro-mechanical finite-element solve carries the physics, including the embedded pipe network.
Results & design
3-D fields, outlet curves, validation checks, and design sweeps point back to the objects that produced them.
One native solve, no external FE dependency
Terra uses a monolithic Newton-Raphson loop, constitutive models, custom linear solvers, and a 1-D pipe network inside the same finite-element run.
17 constitutive laws
Embedded pipe network
Banded / sparse solvers
Static Windows executable
Solver evidence becomes fast design feedback
After the coupled runs train the surrogate, design studies move from full solves to near-instant predictions with uncertainty and Pareto search.
~200 training solves
985k x faster sweeps
Uncertainty bands
Offline web demo
Windows 10/11 x64
Fortran + Python + JavaScript
Local files, no cloud required
The suite
One application, the whole coupled workflow
A purpose-built physics engine, a guided interface, and an AI layer that makes the whole pipeline real-time.
Geometry builder
Build and edit solids on an owned CAD kernel — primitives, booleans, and face-level boundary conditions.
Learn more →Mesher
Generate a clean tetrahedral mesh at coarse, medium, or fine resolution — built in, no external pre-processor.
Learn more →THM solver
A custom finite-element engine resolving heat, pore-fluid flow, and ground deformation together, with an embedded pipe network.
Learn more →AI surrogate
A validated surrogate of the coupled solver — design exploration roughly 985,000× faster, with uncertainty.
Learn more →3-D post-processor
Inspect colour-mapped temperature fields, the pipe, and the soil response in an interactive 3-D viewer.
Learn more →
Application gallery
Validated models, ready to study
One coupled solver and surrogate across energy piles, boreholes, buried collectors, radiant floors, and storage fields — most shown as real finite-element fields, checked against measured or reference data.
Energy pile
A foundation that heats the building
An instrumented three-loop energy pile over a 20-day in-situ test (Faizal et al., 2016), with soil–structure interaction.
0.04–0.08 °C vs fieldView model →
Ground heat recovery
Heat that comes back through the floor
A buried serpentine collector feeding a radiant floor, cross-checked against an independent reference model to within about 0.1 °C.
reference checkView model →
Thermo-mechanical
Heat the pile, watch it heave
A full-scale heating test (Laloui et al., 2006): pile temperature and head movement, the coupled signature temperature-only tests miss.
EPFL testView model →Validation references — energy pile: Faizal, Bouazza & Singh (2016), Geomechanics for Energy and the Environment 8, 8–29. Heating test: Laloui, Nuth & Vulliet (2006), Int. J. Numer. Anal. Methods Geomech. 30(8), 763–781. Ground heat recovery cross-validated against an independent reference model.
Validation
Validated three ways
Cross-validated against independent reference models, instrumented field data, and closed-form analytical theory.
985,000×
vs a full FEM solve
0.08–0.38 °C
reference agreement
R² 0.9997
held-out accuracy
0.04–0.08 °C
vs instrumented field data
Latest updates
What's new
June 2026
v1.1 released
The AI surrogate, pile-field interference, and seasonal loads ship in one application.
June 2026
Surrogate validated
0.009 °C mean error across 200 held-out coupled solves, at R² 0.9997.
June 2026
Pile-field interference
Overlapping thermal plumes in dense fields, resolved where a spreadsheet cannot.
Put full-physics geo-energy design on every desk
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