Journal of Food, Agriculture and Environment

Three-dimensional numerical simulation of sediment transport in Lake Tai based on EFDC model

Author(s):

Chen Lv ¹,  Fengjun Zhang ¹*, Zhaoying Liu ¹, Shaoli Hao ², Zhongbo Wu ¹

Recieved Date: 2013-01-06, Accepted Date: 2013-04-30

Abstract:

The Environmental Fluid Dynamics Code (EFDC) model was used to analyze the influence of wind speed, wind direction, water flow and wave etc factors to the sediment suspension, settlement and sediment transport in Lake Tai in this paper. Study of the sediment movement situation under different prevailing wind (wind speed is 6.5 m/s, wind direction is SE and NW) was used to analyze the time and space characteristics of sediment concentration, which correlated with wind and flow field. This study was based on Position Error Signal (PES) results and sums up the starting and suspended law of the sediment under different kinds of disturbing intensity. By using the experimental parameters the accuracy of the simulation results from the model has been significantly improved. It can be used for further research on the eutrophication of Lake Tai. Sediment simulation result shows that: a) the difference of SS plane distribution is due to the joint action of wind, wave and dynamic factors; b) the difference of SS vertical distribution is due to wave. The wave sets off the sediment mixing into the water, which caused SS concentration in the bottom increasing, and gradually spreading to the surface; c) the overall trend of SS concentration changes with time. It is increases first and then decreases; d) the sediment thickness reduces at windward, while accumulate at leeward. This result is consistent with the actual situation which lake runs off the sediment.

Keywords:

EFDC model,  joint action of wave and water, SS concentration, Lake Tai

---

Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 2
Category: Environment
Pages: 1343-1348

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :