Swarm proxy as a polynomial per cell, PIC transport, and one characteristic trace per solver - #707

Merged

lmoresi merged 12 commits into

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feature/integration-point-proxy

Sep 8, 2026

Commits on Sep 8, 2026

IntegrationPointVariable: any number of components

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claude
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4fa6350
SwarmVariable proxy_location='integration_points': particles to the integration points directly

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c953786
Docs: swarm proxy at the integration points

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400b2de
Test: layered Couette flow, interface on mesh edges, exact with the integration-point proxy

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dade727
SwarmVariable proxy_location='cells': least-squares polynomial per cell

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ebe100e
Evaluator: forward `simplify` to the local path; cells proxy: bounded thin-cell fit; Lagrangian_Swarm FLIP option

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c7a5cee
Test: FLIP invalid-option probe passes the required continuous argument

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6c24a81
Lagrangian_Swarm samples its history before the particles first move

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ea6d1bd
DDt histories share one characteristic trace per solver

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2980af7
Evaluator: internal simplify defaults off, matching the public API

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3cfe2ed
Merge remote-tracking branch 'origin/development' into feature/integration-point-proxy
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3162bef
Review (#707): refresh the proxy before the FLIP read-back, drop a misplaced helper copy, bcs=None, delta-element docstring

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claude
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2980bcb