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IBPSA France 2026

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  7. đź’¬ IBPSA France 2026

L’hypercube was present at the IBPSA France 2026 conference — in Lyon, from May 18 to 22, 2026 — to present work on thermo-hydrological modelling of urban ground surface temperatures, and on the design of bio-analogous climate shelters as part of the AbriCoCoDA project.

All proceedings are available on the IBPSA France website.

Note: both publications below are in French.

Thermo-hydrological modelling of ground surface temperatures

Evolution of air and ground surface temperatures over the 3rd week of June in Lyon
Evolution of air and ground surface temperatures over the 3rd week of June in Lyon

Information

  • Title : Modèle thermo-hydrique pour la simulation des tempĂ©ratures de surface de sol en environnement urbain
  • Authors : Édouard WALTHER, Mateusz BOGDAN, Guilhem COTTET
  • Access : Link to article

This work proposes an improvement to the ground model of the ICE-Tool QGIS plugin, an urban design tool for rapid estimation of surface temperatures based on layout choices. Two 1D models are introduced: a variable-step implicit numerical scheme for the transient heat equation, and a hydrological model based on Richards’ equation to represent moisture dynamics in permeable soils.

Designing climate shelters with performance comparable to continuous tree canopies — AbriCoCoDA project

As part of the co-supervision of the AbriCoCoDA post-doctoral project more info , L’hypercube contributed to this study on the quantitative design of high-performance urban shelters.

Net shading quality and quantity provided by a shelter
Net shading quality and quantity provided by a shelter

Information

  • Title : Comment concevoir des abris avec des performances climatiques similaires aux couverts arborĂ©s continus ?
  • Authors : Teddy GRESSE, Damien DAVID, FrĂ©dĂ©ric LEFEVRE, Mathieu GALTIER, Mateusz BOGDAN, Marjorie SALLES, Estelle MORLÉ, Karine LAPRAY
  • Access : Link to article

The paper proposes a quantitative methodology for evaluating urban climate shelters, based on the AbriCoCoDA criterion: a shelter performs well if the PET index at pedestrian height is lower than or equal to that measured under a continuous tree canopy. Simulations are conducted with the thermo-radiative model IMOTEP for a typical future hot summer day in Lyon (2040–2060 horizon). Three major design rules emerge: a size greater than 5 m, the exclusion of lightweight fabrics in favour of insulated and thermally inert structures, and a preferred placement north of a south-facing building, without overlapping its shadow.