• experimental study on sediment resuspension in taihu lake under different hydrodynamic disturbances

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 384
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     contaminants resuspension in sediments induced by wind-wave could influence the water quality in shallow lakes. resuspension of surface sediments from the zhushan bay, taihu lake was simulated under different wind forcing by using a pneumatic annular flume in this study. acoustic doppler velocimeter (adv) was used to measure flow velocity at each wind speed, and the characteristics of sediment resuspension were studied with the layered sampling technology. the experimental results show that the flow velocity increases with wind speed obviously and 6m/s is a critical wind speed which affected hydrodynamic conditions significantly. the distribution of flow velocity and water depth is different from that in ordinary open channel. with the enhanced hydrodynamic factors, the suspended solids concentration (ssc) in water increases accordingly, and the incipient velocity of sediment resuspension is about 0.21 m/s. based on the analysis of wind speed and average ssc in water column, the quantitative relationship is obtained. the ssc of the bottom layer is higher than the content of surface layer under different hydrodynamic conditions, and there are similar distributions between ssc and flow velocity in different water layers.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین ژورنال ها