Abstract: Models in high frequency range for underground power cable connections are essential for the interpretation of partial discharge (PD) signals arising e.g. diagnostic techniques. This paper focuses on modeling of power cable joints. A lumped parameter odel and a cascaded transmission line model are proposed based on scattering parameters (S -parameters) measurement on a 10 kV oil-fille...

We propose a novel mathematical and numerical model for cardiac electromechanics, wherein biophysically detailed core models describe the different physical processes concurring to function. The models, once suitably approximated, are coupled by computationally efficient strategy. Our is based on: (1) combination of implicit-explicit (IMEX) schemes solve (2) an Artificial Neural Network model, ...

Multidimensional (MD) systems describe relations between signals depending on two or more independent variables. They are also called distributed parameter systems, if the independent variables are time and space. The only conventional models for their description are partial diierential equations. This is in contrast to onedimensional (lumped parameter) systems, where a variety of diierent mod...

THE MATHEMATICAL MODEL AND NUMERICAL SIMULATION OF THE HEAT PUMP SYSTEM 1. COLLEGE OF APPLIED SCIENCES – SUBOTICA TECH, SERBIA 2. BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS, HUNGARY ABSTRACT: In this paper water-water heat pump is analyzed using a computer simulation. The simulation program is based upon steady state mathematical models of the refrigeration system components. The numerical...

Computer applications to storm runoff prediction have revolutionized the watershed modeling techniques. In general, a watershed is modeled as a system with inputs and outputs (Chow 1964). A system can be lumped or distributed, depending upon the spatial and temporal characteristics of the design variables used in the model. A lumped parameter ignores the variability in space. On the other hand,...