紊流擴散 的英文怎麼說
中文拼音 [wènliúkuòsǎn]
紊流擴散
英文
eddy diffusion-
Topics include : molecular and turbulent diffusion, boundary layers, dissolution, phase partitioning, bed - water exchange, air - water exchange, settling and coagulation, buoyancy - driven flows, and stratification in lakes
探討課題計有:分子和紊流擴散、邊界分層、溶解、相之間的分割、底床與水間的交換作用、空氣與水間的交換作用、沉降和混凝、浮力流以及湖泊分層作用。Three kinds of inflows with different combination of temperature and salinity are studied. results show that difference of diffusion between temperature and salinity have little effect on mean flow fields. but significant effects will arise when components are distinct in contribution to water density
成果分析指出了溫鹽共同作用引起的高雷諾數紊動浮力流動受溫度和鹽度的分子擴散速率差異的影響很小：但是因各組分對環境水體密度影響差異會造成不同的浮力流動特徵。A vertical two dimensional model for thermo stratified flows is proposed, which solves the velocity and pressure by a fractional step method, and large eddy simulation model is used to calculate the reynolds stress and turbulent diffusion effect
摘要建立立面二維水動力學與水溫耦合模型，用分步法求解流速和壓力，採用大渦模型計算紊動應力和紊動擴散。Based on previous study of pollutant dispersion in vertical direction, an empirical formula for determining the mean value of turbulence viscosity coefficient in numerical simulation of tides in vertical direction was worked out and applied to 3 - d numerical simulation of tides for changxing island reach in yangtze river estuary
摘要在已有污染物垂向擴散過程研究的基礎上，提出了確定潮流數值模擬中垂向紊動黏性系數的垂線平均值的經驗方法，並將此方法應用到長江口長興島段的潮流三維數值模擬中。In city, because the occupied area of the urban sewage pumping station is usually limited, the length of the forebay is inclined to be short and the diffusion angle in flow direction is big accordingly, which causes bad flow pattern, such as backflows, vortices, etc. the bad flow pattern will make the efficiency of the pump unit drop
城市排污泵站由於條件的限制，前池一般面積較小，擴散角較大，擴散段較短，因此水流進入前池后突然擴散，流態紊亂，易行成迴流、漩渦等不良水流流態，從而影響水泵的工作性能。分享友人