Internship Report

1. Introduction

The presentation of intership : Download PDF

1.1. Scientific Context

Reducing the global energy consumption is one of the major challenges of the current century. After the Paris Agreement COP21 [L’Accord de Paris], the petitioners including promise to reduce their energy consumption .

The first responsible for the final energy consumption in France is the building sector [source gazprom]. More precisely, the building heating [source EDF].

To reduce the energy consumption of residential building, it is necessary to understand the heat transfer in building and model it.

There are three types of heat transfer in building :

  • conduction (close to close transfer)

  • convection (movement of material) for example opening a window.

  • radiation (by electromagnetic wave) for example the light of the sun on the surface of walls.

In this internship, we focus on radiation. What is the impact of radiation on a building temperature ?

1.2. Project Context

This work was achieved during a two-months internship, carried out at CEMOSIS in the frame of the Master 1 of CSMI (Calcul Scientifique et Mathématiques de l’Information).

This training forms mathemacians with double skill in applied mathematics and computer science.

This internship took place at CEMOSIS platform and is part of the project 4fastsim-ibat was initiated in collaboration with Synapse Concept [ibat project].

CEMOSIS (Centre de modélisation et de simulation Strasbourg) is a technological platform in mathematics at the university of Strasbourg that was created in January 2013(référence) in the institute IRMA (Institut de Recherche Mathématique Avancée). It works on modeling simulation, in data science or high performance computing.

Synapse-concept is an consulting compagny in the construction sector [Synapse site].

The instead takes place in CEMOSIS in the team Synapse. CEMOSIS (Centre de modélisation et de simulation Strasbourg) is a technological platform in mathematics at the university of Strasbourg. CEMOSIS was created in January 2013(référence) in the institute IRMA (Institut de Recherche Mathématique Avancée). CEMOSIS works on modeling simulation, in data science or high performance computing.

4fastsim-ibat project aims to:

  • Develop a Building Information Model (BIM) for existing building

  • Develop fast 3D thermal management model using IA adn Physics

  • Use sensors deployed in IBat platform

This project will make it possible to accelerate the identification of energy savings in existing assets using clustered calculation. It will also make it possible to make the expected results more reliable with regard to the theoretical calculations corrected by the integration into the equations of the data from the physical sensors in place in buildings [4fastsim-ibat project].

The project have acces to sensors of the IBat platforms, a building, located in Illkirch-Graffenstaden, that is equipped with a set of sensors that can measure temperature, relative humidity and some other physical quantities.

The project gathers several research domains such as Data Science, mathemathics and physics.

1.3. Objectives

The first objective of this internship is to understand and synthesise the documentation on radiative heat transfer and on the methods of its numerical resolution. The second objective to implement the selected method on benchmark tests in order to verify and validate it, then on a case of a building.

1.4. Plan

(Provisional)

  • Introduction (thise page)

  • Theory of radiative heat transfert

    • View Factor : definition and rules

    • Monte Carlo : Presentation of Monte Carlo method

  • Geometry tools : set of geometrical tools use in Monte Carlo method

  • Detail of MOOSE : description of implementation of view factor of project MOOSE

  • Detail of Visionaray : description of project visionaray

  • Implementation of Monte Carlo

  • Benchmarks

  • Conclusion

1.5. Contribution on documentation

I participate in writing of documentation on 4fastsim-ibat :

References