ProfileEarly accessEnergy Geostructures
Energy piles, borefields and underground thermal storage, modelled as built: embedded 1-D pipe circuits inside native 3-D finite elements, replayed from recorded solver states.
Recorded energy-pile film showing the layered soil cylinder, embedded pipe circuit coloured by fluid temperature, and the cooling field over 20 days. It replays 12 recorded solver states without temporal interpolation.
Case record
Recorded solver evidence
Each result starts from a still recorded state. Animation loads only when requested, and every figure keeps its original ratio so axes, legends and colour scales remain in view.
A-01
The cooling front develops around the pile while the embedded LINE2 circuit and pipe-temperature profile remain visible in the same recorded view.
Twelve recorded solver states are replayed at a fixed view and fixed temperature scale. No temporal interpolation.
Comparison pair
A-02
One section per soil layer combines fixed 6, 10 and 15 °C isotherms with six temperature-coloured pipe intersections.
Each panel is an exact plane cut through the native mesh, not an interpolated grid. No temporal interpolation.
A-03
Two orthogonal sections follow the pile and surrounding ground across the complete vertical model domain.
The x = 0 and y = 0 cuts use the native mesh. Coloured pipe lines are orthogonal centreline projections, not co-planar section data. No temporal interpolation.
Screening evidence
A-04
All 8,008 six-of-sixteen activation layouts on the 4 × 4 pile grid are evaluated at the 25-year horizon.
Exact enumeration certifies the optimum. Simulated annealing independently recovers a degenerate optimum.
A-04 uses pairwise infinite-line-source interference. It is a screening model, not a solved finite-element thermal field.
Exact-state replay
A-05
The collector cools the shallow ground through a 48-hour heat-pump duty cycle while soil and pipe temperatures retain separate fixed scales.
The replay indexes stored Terra states directly. Soil ΔT is Tinitial - Tstate on a fixed 0 to 4 K scale; pipe temperature uses a separate -3.2 to +1.0 °C scale. No temporal interpolation.
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