As a continuation of authors’ previous work, this work extends and hackles the numerical method for wind turbine wakes based on vortex method, proposes Lagrangian actuator model (LAM) which is used representation rotor under Lagarangian framework. This paper provides two examples LAM, line (LAL) disc (LAD) model, constructs matching methods wake predictions respectively. Those have high computa...

Short-term interval timing i.e., perception and action relating to durations in the seconds range, has been suggested to display time-of-day as well as wake dependent fluctuations due to circadian and sleep-homeostatic changes to the rate at which an underlying pacemaker emits pulses; pertinent human data being relatively sparse and lacking in consistency however, the phenomenon remains elusive...

This paper is first of the two papers dealing with nonlinear modelling and investigation coupled cross-flow in-line vortex-induced vibrations (VIVs) flexible cylindrical structures. As a continuation previous work (Qu Metrikine in Ocean Eng 196:106732, 2020) where new single wake oscillator model was proposed studied for VIVs rigid cylinders, present focuses on applying it to cylinders. In this...

The principal purpose of this work is the simulation of the ship wake in Synthetic Aperture Radar (SAR) imaging based on a facet scattering model. The hydrodynamic model of the surface waves mainly considers the Kelvin wake waves and the wind driven waves. For the prediction of radar returns from the composite surface, the semi-deterministic facet scattering model (SDFSM) is proposed, which is ...

An experimental study has been conducted to investigate the effects of vane-type vortex generators in affecting the flow pattern of the wake region using a 1:20 scale tractor-trailer model. The de Haviland wind tunnel of the University of Glasgow was employed in this study. Surface oil flow visualisation, smoke visualisation and twocomponent time-averaged particle image velocimetry measurements...

A new Gaussian dispersion model, the Plume Rise Model Enhancements (PRIME), has been developed for plume rise and building downwash. PRIME considers the position of the stack relative to the building, streamline deflection near the building, and vertical wind speed shear and velocity deficit effects on plume rise. Within the wake created by a sharp-edged, rectangular building, PRIME explicitly ...

OF THE THESIS OSCILLATOR STRENGTHS FROM TIME-DEPENDENT DENSITY FUNCTIONAL THEORY by Heiko Appel Thesis Director: Kieron Burke We consider different forms of single-pole approximations (SPA) for oscillator-strengths in the response formalism of time-dependent density functional theory. Numerical calculations of oscillator strengths are presented for a simple model system, Hooke’s atom, and vario...

In its most basic form an oscillator consists of a resonator driven on resonance, through feedback, to create a periodic signal sustained by a static energy source. The generation of a stable frequency, the basic function of oscillators, is typically achieved by increasing the amplitude of motion of the resonator while remaining within its linear, harmonic regime. Contrary to this conventional ...