Multi-physics modelling approach for oscillatory microengines: application for a microStirling generator design

15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Formosa, F.^1 ; Fréchette, L.G.^2

SYMME, Université Savoie Mont Blanc, Annecy

74000, France^1

Université de Sherbrooke, Département de Génie Mécanique, 2500 boul. Université, Sherbrooke

QC

J1K 2R1, Canada^2

关键词: Centimeter-scale;    Electrical circuit;    Electro-mechanical transducers;    Generator design;    Hydraulic radius;    Mechanical structures;    Multi-physics modelling;    Thermal penetration depths;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/660/1/012071/pdf
DOI  :  10.1088/1742-6596/660/1/012071

来源: IOP

【 摘 要 】

An electrical circuit equivalent (ECE) approach has been set up allowing elementary oscillatory microengine components to be modelled. They cover gas channel/chamber thermodynamics, viscosity and thermal effects, mechanical structure and electromechanical transducers. The proposed tool has been validated on a centimeter scale Free Piston membrane Stirling engine [1]. We propose here new developments taking into account scaling effects to establish models suitable for any microengines. They are based on simplifications derived from the comparison of the hydraulic radius with respect to the viscous and thermal penetration depths respectively).