Friday 29th of March 2024
 

From Partial Element Equivalent Circuit (PEEC) to muphyPEEC for Solving Coupled Multiphysics Problems


Vjosa Shatri, Ruzhdi Sefa, Lavdim Kurtaj and Avni Skeja

A tool for unified simultaneous simulation of multiphysics problems based on Partial Element Equivalent Circuit (PEEC) method is presented. Extension of PEEC method with thermal and mechanical domains is based on circuit interpretation of Finite Difference (FD) and Finite Element Method (FEM) equations. Equations in FEM case are derived by Galerkin residual method with basis functions of order zero or one. All steps of the process, from geometry description to netlist generation, are done with multiphysics PEEC (muphyPEEC) Toolbox for MATLAB. Solution of the problem is done with LTspice, where time- and frequency-domain simulations can be done. To demonstrate the approach, muphyPEEC is used to model and solve cooling of TO220 transistor mounted on flat plate heat sink and fin heat sink, and results are compared with IR (Infra Red) camera recordings. Electro-thermal microactuator is used as fully coupled problem example, and results are compared with those published elsewhere.

Keywords: Partial Element Equivalent Circuit, PEEC, PEEC MATLAB Toolbox, Multiphysics PEEC, muphyPEEC, Flat Plate Heat Sink, Fin Heat Sink, Electro-Thermal Microactuator.

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ABOUT THE AUTHORS

Vjosa Shatri
Prishtina, 10000, Kosovo

Ruzhdi Sefa
Prishtina, 10000, Kosovo

Lavdim Kurtaj
Prishtina, 10000, Kosovo

Avni Skeja
Prishtina, 10000, Kosovo


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