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Communication Dans Un Congrès Année : 2015

Modeling of the thermodynamics, kinematics, and dynamics of a beta Stirling engine

Alexandre Jacquot
  • Fonction : Auteur
  • PersonId : 755857
  • IdRef : 075177927
Driss Kenfaui
Anne Dauscher

Résumé

A beta Stirling engine is a rather complex thermodynamic system that is not in thermal equilibrium. The working piston is driven by the change of pressure in the cylinder. The change of pressure itself is the result of the change of temperature of the inert working gas enclosed in the cylinder. The temperature change of the working gas can only be calculated by accounting for the heat transfer in gas and solid phases and if the motions of the displacer and working piston are known. The challenge lies in the modeling of a Stirling engine involving multiple physical models that are coupled. The most important hurdle is to study these physical models in interaction. In this work, a model of a free piston beta Stirling engine developed using COMSOL Multiphysics is presented. The model is composed of a conjugate heat transfer module and a module for the mechanical system dynamics (COMSOL Multibody Dynamics Module). Conjugate heat transfer corresponds to the combination of heat transfer in solids and gases. The model is used to provide some guideline on the materials requirement and for improving the dynamics of the Stirling engine.
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Dates et versions

hal-01313848 , version 1 (10-05-2016)

Identifiants

  • HAL Id : hal-01313848 , version 1

Citer

Alexandre Jacquot, Driss Kenfaui, Anne Dauscher. Modeling of the thermodynamics, kinematics, and dynamics of a beta Stirling engine. 16th International Stirling Engine Conference, Stirling International, 2015, Bilbao, Spain. pp.280-285. ⟨hal-01313848⟩
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