A Novel System for the Combined Measurement of Wave- and Flow-fields beneath Wind Induced Water Waves
نویسندگان
چکیده
ABSTRACT At the same time and location, simultaneous time series of wave slope images and the flowfield beneath water waves were obtained using an integrated set-up including particle-tracking and wave slope instruments. By an especially developed tracking algorithm, hundreds of seeding particles can be traced automatically, measuring the flow field. At the the same location the wave-field was measured with an illumination technique based on shape-from-refraction. Simultaneous flowand wave-field measurements allow the investigation of transport processes across the water surface.
منابع مشابه
Particle Tracking Velocimetry Beneath Water Waves Part I: Visualization and Tracking Algorithms
A novel particle tracking system working with a high particle concentration for the measurement of flow fields beneath water waves is described. It features a 1-4 cm thick light sheet parallel to the main wave propagation direction so that the seeding particles stay long enough in the illuminated area to enable tracking over several wave periods. An area of up to 14.0 × 10.0 cm2 is observed by ...
متن کاملThe study of effective stress and pore water pressures in the foundation of a concrete gravity platform affected by loads due to waves, currents and wind in the Persian Gulf
It is proposed to use a single base platform in the Persian Gulf considering its low depth and more appropriate environmental conditions in comparison to North Sea and Mexico Gulf where this kind of platform is very popular. The pile of platform is responsible for transmission of environmental loads resulted from waves, currents, wind and dead loads to foundation of platform. Using SACS 5.3 sof...
متن کاملHydrodynamic Modelling of Coral Reefs:Ningaloo Reef-Western Australia
As with all coral reef systems, the ecology of Ningaloo Reef is closely linked to water circulation which transport and disperse key material such as nutrients and larvae. Circulation on coral reefs may be driven by a number of forcing mechanisms including waves, tides, wind, and buoyancy effects. Surface waves interacting with reefs have long been known to dominate the currents on many coral r...
متن کاملA simple and novel method for acoustic streaming power measurement of ultrasonic horn
Ultrasonic horn with transfer of acoustic wave into an aqueous solution results in unique properties. When, transfer of sound wave into a liquid results in liquid movement in the direction of wave propagation which gradually loses its energy due to the viscous friction. This wave motion induces a flow which is known as acoustic streaming or micro-streaming. In this article, a simple innovative ...
متن کاملDevelopment of a mathematical model to design an offshore wind and wave hybrid energy system
Fossil Fuels are always considered as environmental pollutants. On the other hand, the political and economic situations highly affect the price of these fuels. Offshore wind and wave, as renewable energy sources, represent the better alternatives for electricity generation. Therefore, it is necessary that wind speeds effectively be estimated due to the absence of field measurements of the wind...
متن کامل