Flow Due to Waves on a Beach

Date: 
Friday, April 14, 2017 - 2:30pm
Location: 
3110 Etcheverry Hall
Speaker: 
Dr. Nimish Pujara

Postdoctoral Scholar

Civil & Environmental Engineering
University of California, Berkeley

About: 

E-201 Ocean Engineering Seminar Series, Spring 2017

 

2:00 - 2:30pm Beverages & Refreshments

2:30 - 4:00pm Seminar

 

The dynamics of a beach system are mediated by the flow of water due to surface waves that crash onto it. The flow is responsible for changes in the beach morphology through sediment transport and is, in turn, influenced by these changes in beach profile. The most important region of the beach for such changes is the region that is alternatively wet and dry with each incoming wave. We present insights into this flow from experimental and theoretical investigations. The focus is on understanding what parameters of the incoming waves control the flow on the beach and the physical mechanisms by which they do so. In particular, we see that the complexity of the flow due to waves can be reduced to a few parameters, which can be related to properties of the incident waves. The results have implications for predicting coastal flooding risks as well as improving numerical models.

Biography: 

Dr. Nimish Pujara is a postdoctoral scholar in the Environmental Fluid Mechanics lab, of CEE, where his work focuses on understanding the motion of particles in turbulent flows. In spring 2016, he was also a lecturer in the CEE department at UC Berkeley, teaching “Mixing and Transport in the Environment.” He graduated with a Ph.D. from Cornell University, where he was part of the Coastal Engineering group. His research interests are in turbulent and multiphase flows in environment and wave-driven nearshore hydrodynamics.

 

Hosted by: Prof. Evan Variano (variano@berkeley.edu)