Unsteady Wave-Driven Circulation Cells Relevant to Rip Currents and Coastal Engineering

نویسنده

  • Andrew Kennedy
چکیده

The technological objectives of this project are to investigate the mechanics of wave-driven flow on complex topographies. Specifically, we are examining the occurrence, forms, and detailed causes of flow instabilities over complex topographies; the influence of three dimensional topographical features on large scale flow features, the forms and utility of simplified expressions in predicting flows, and the effects of flows on detailed morphology. We are also investigating the role of these flows on large scale morphological evolution.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Numerical modelling of induced rip currents by discontinuous submerged breakwaters

Submerged breakwaters are one of the shore protective structures. Any discontinuity in these breakwaters causes changes on current parameters including speed and water surface profile. In this paper, discontinuous submerged breakwaters were modelled to investigate the changes in the wave and flow pattern.To investigate the phenomenon, three models including a shore with constant slope, a shore ...

متن کامل

Wave Breaking and Rip Current Circulation

This paper examines the effect of current-induced breaking on the modeling of wave breaking dissipation near rip currents. Simulations using a set of existing wave transformation models are compared to existing laboratory measurements made on a bar/channel topography in the presence of both strong and weak rip currents. The model/data comparisons demonstrate that existing models can effectively...

متن کامل

Effects of wave-current interaction on rip currents

[1] The time evolution of rip currents in the nearshore is studied by numerical experiments. The generation of rip currents is due to waves propagating and breaking over alongshore variable topography. Our main focus is to examine the significance of wave-current interaction as it affects the subsequent development of the currents, in particular when the currents are weak compared to the wave s...

متن کامل

Hydrodynamic 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 کامل

Rip Channels and Nearshore Circulation

Results from an experimental investigation into the e ects of rip channels on the nearshore circulation system are presented The results show that periodic channels in an otherwise longshore uniform bar induce longshore pressure gradi ents that drive pairs of counter rotating circulation cells Dense measurements of wave height wave setup and induced currents are presented In addition ev idence ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010