We propose a new transient model which naturally extends the sinusoidal model to nonstationary phenomena. An integrated online-offline segmentation approach is developed, followed by an explicitly time-variant sinusoidal model.

The stability of sandwich panels subjected to the simultaneous action of a uniform temperature and a uniaxial compression is considered. At elevated temperatures, the buckling load can be increased by using shape memory alloy (SMA) fibers in resin sleeves embedded within the core, at the midplane of the sandwich panel. The best results are achieved when the spacing of SMA fibers across the pane...

This paper is focused on the analysis of the current distribution of symmetrical full-wave dipole antenna based on double and triple feeding techniques; the current distributions were measured using a shielded loop protruding through a slit in the antenna surface along its axis, gives exact and accurate measurement rather than sinusoidal approximation. However, the sinusoidal distributions of c...

An experimental and numerical study of free convection heat transfer from a channel consisting of a vertical sinusoidal wavy surface and a vertical flat plate has been carried out. The vertical wavy surface was maintained at a constant temperature, while the flat plate is adiabatic. A Mach-Zehnder Interferometer was used to determine the local heat transfer coefficients of sinusoidal wavy surfa...

The surface average temperature and the electrode distribution are key parameters to predict erosion. Experimental research on arc erosion has been carried out in a model circuit breaker, which CO2 is filled chamber Cu-W used as contact material. temperatures of plug exposed electric with sinusoidal currents 5kA were determined by high-speed pyroscope. In order establish relationship between cu...

The electric power calculator (EPC) software, for the simulation and analysis of electrical networks at industrial frequency, is described in this article, including its source code operational diagram. Compared to well-known commercial EPC directly provides values voltages, currents, powers each subsystem. voltages currents are calculated, phasor notation, applying Kirchhoff’s laws, while obta...

An analysis of heat transfer in the flow of a viscous, in-compressible fluid along an infinite porous plate is presented when the plate is subjected to a transverse sinusoidal suction. The flow field becomes three-dimensional due to this type of suction velocity. Expressions for the flow and temperature fields are obtained by series expansion method. It is found during the course of discussion ...

The nonlinear dynamics of and heat and mass transfer processes in annular liquid jets are analyzed by means of a nonlinear system of integrodi€erential equations which account for the liquid motion and the gases enclosed by the jet. Both linear and sinusoidal heat and mass addition sources are considered to take place homogeneously within the volume enclosed by the jet's inner interface in an a...