Free-vortex wake models are capable of providing an accurate and physically detailed representation of the main rotor wake for flight dynamics simulation. Recent advances in computing power and efficient algorithms have made it feasible to use free wakes for real-time simulation. The CHARM free-vortex wake model was integrated with the GENHEL flight dynamics simulation of the UH-60A helicopter....

In the present study, vortex-induced vibrations in both In-Line and Cross-Flow directions of long flexible cylinders within a uniform flow are predicted by modified wake oscillator model. detail, Van der Pol's model with drag lift coefficients being modelled as random variables. The statistics force coefficient, i.e. mean value standard deviation, extracted from literature reporting experimenta...

The harmonic oscillator in anti de Sitter space(AdS) is discussed. We consider the harmonic oscillator potential and then time independent Schrodinger equation in AdS space. Then we apply the supersymmetric Quantum Mechanics approach to solve our differential equation. In this paper we have solved Schrodinger equation for harmonic oscillator in AdS spacetime by supersymmetry approach. The shape...

A dedicated wake-up receiver may be used in wireless sensor nodes to control duty cycle and reduce network latency. However, its power dissipation must be extremely low to minimize the power consumption of the overall link. This paper describes the design of a 2 GHz receiver using a novel “uncertain-IF” architecture, which combines MEMS-based high-Q filtering and a free-running CMOS ring oscill...

The wake position is crucial feedback information for closed loop wind farm control. This paper presents a center tracking approach based on turbine rotor loads, which feasible to track the while impinging downstream turbine. equivalent characteristics are estimated blade root bending moments. Furthermore, wake-wind model developed describe relationship between averaged and position, in velocit...

This study investigates the potential of vortex-induced vibration (VIV) as a renewable energy source, achieved when fluid flow interacts with bluff body, inducing self-sustained oscillations through vortex shedding in wake. While VIV research has traditionally focused on understanding its mechanisms and mitigating detrimental effects, interest harvesting surged means to convert marine hydrokine...

This publication presents a new analysis of experiments that were carried out in human subjects in isolation from time cues, under supervision of Jürgen Aschoff and Rütger Wever at the Max Planck Institute for Behavioural Physiology (Erling-Andechs, Germany, 1964-1974). Mean rectal temperatures (tb) were compared between subjects who showed internal desynchronization (ID) and internal synchroni...