This paper presents the development of a transient thermal model of the EVO Electric AFM 140 Axial Flux Permanent Magnet (AFPM) machine based on a hybrid finite difference and lumped parameter method. A maximum deviation between simulated and measured temperature of 2.4°C is recorded after using a Monte Carlo simulation to optimise model parameters representing a 53% reduction in temperature de...

Star formation in relic HII regions of the first stars is investigated using magneto-hydrodynamical simulations with a nested grid method that covers ∼ 10 orders of magnitude in spatial scale and ∼ 20 orders of magnitude in density contrast. Due to larger fraction of H2 and HD molecules, its prestellar thermal evolution is considerably different from that in the first star formation. Reflecting...

The paper presents a boundary condition independent transient thermal network model generated by means of model order reduction methods. The order reduction is performed with MOR for ANSYS which is based on the Krylov subspace method via the Arnoldi algorithm. Subsystems such as a semiconductor device and the printed circuit board are modeled with ANSYS, separately. Then, these models are used ...

The study of the thermal behavior of complex packages as multichip modules (MCM’s) is usually carried out by measuring the so-called thermal impedance response, that is: the transient temperature after a power step. From the analysis of this signal, the thermal frequency response can be estimated, and consequently, compact thermal models may be extracted. We present a method to obtain an estima...

to design equipment and facilities to dry, preserve and process pomegranates, it is necessary to know their specific heat and thermal conductivity. the objectives of this study were to determine the specific heat and thermal conductivity of pomegranates and develop mathematical estimation models for them. the effects of moisture content (15-75% w.b.) and temperature (5-20°c) on the thermal prop...