Generalized Aifantis strain gradient plasticity model with internal length scale dependence on grain size,sample size and strain |
| |
Authors: | Zhao Jianfeng Zhang Bo Liu Dabiao Konstantinidis Avraam A. Kang Guozheng Zhang Xu |
| |
Affiliation: | 1.Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China ;2.School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China ; |
| |
Abstract: | Sediment-water interfaces are important interfaces for lakes, which are related to most environmental and ecological problems. Wind-induced waves cause secondary pollution via sediment resuspension. Since the coupling mechanism of water, resuspended sediments, and phosphorus affects the release of phosphorus (P) near the interface, a coupled model was explored for two sediment types with different adsorption-desorption capabilities to examine sediment resuspension and P release. The relationships among wind speed, wave characteristics, sediment distribution and P concentration were obtained. For different sediments, the unit sediment desorption release is negatively correlated with wind speed. When sediments are resuspended under low or moderate wind speed, the P concentration in the overlying water increases abruptly, hampering diffusion. P release exhibits the characteristics of concentrated release in a small region and changes the water environment rapidly. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|