Tuning up an electromagnetic accordion
This article reports on research an electric `accordion` which could potentially effect the fields of radar, communications, and materials science as well as producing some insight into the behavior of the turbulent gases surrounding supernovae. The first working version of the electromagnetic accordian has been build and has produced `sounds` in the form of short bursts of radio waves. Scientists are trying to extend the range of this accordion to shorter wavelengths and pulse lengths. Description of the this work is given.
This study investigates the effects of Pierson-Moskowitz, Jonswap spectrum that are typical irregular wave spectrums for wind turbine system with jacket support structure. Also various offshore environmental parameters based on korean local condition were used in our study. The loads acting on the system was considered by referring to the Design Load Case from IEC guide line. And improved von Karman model was used as a turbulence model. As a result, various significant wave height and peak spectral period cause noticeable difference of extreme and fatigue loads prediction.