【摘 要】
：
In this article, the turbulent flow field and the scouring mechanism around a circular pier were numerically investigated using the Large Eddy Simulation (LES)
【机 构】
：
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China
论文部分内容阅读
In this article, the turbulent flow field and the scouring mechanism around a circular pier were numerically investigated using the Large Eddy Simulation (LES) method for three scouring holes. The effects of the bottom topographies on the flow structure were studied in detail. The results show that at the downstream of the pier, as the scouring depth increases, the bed shear stress decreases and approaches to the undisturbed shear stress, however, the turbulent intensity, the fluctuating pressure, and the vertical pressure gradient increase gradually.
其他文献
Background:Ulcerative colitis (UC) is associated with differential expression of genes involved in inflammation and tissue remodeling,including FOXO3a,which enc
Numerical simulation of hemodynamics under the combined effects of both the host blood vessel and the microvascular network,which is based on a 2-D tumor inside
Background:Both uniportal and triportal thoracoscopic lobectomy and sublobectomy are feasible for early-stage non-small cell lung cancer (NSCLC).The aim of this
An explicit simulation of the tropical cyclone Winnie (1997) was conducted by use of a triply-nested 3-D nonhydrostatic mesoscale model MM5, before and after it
The transport and transformation of fluoride in sand were studied by using soil tank test under the condition of saturated water in this article. Based on the a
A two-step Taylor-Galerkin fractional-step finite element method, which is of second order accuracy in space and time, was proposed for the three-dimensional fr
A hybrid model that combines both physical and numerical models was employed to simulate the velocity field in a river area in complex geometry with multiple pl
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
Background:Pathophysiological processes,such as malignancy,can lead to the formation of stiffer tissue in lung cancers.Endobronchial ultrasound (EBUS) elastogra
The study of cylindrical particulate flows has wide industrial applicability and hence received much attention. The purpose of the present paper is to provide a