%0 Journal Article
%A MI Bo-yu
%A ZHANG Xiao-feng
%A REN Shi
%T Numerical Simulation of Density Current on a Slope
%D 2017
%R 10.11988/ckyyb.20160346
%J Journal of Yangtze River Scientific Research Institute
%P 60-64
%V 34
%N 7
%X A vertical two-dimensional RNG <i>k</i>-<i>ε</i> turbulent model is established and its reasonability and accuracy are verified by comparison with existing experimental data. Density current on a slope in the presence of  different slope gradients and discharges is simulated, and results reveal that 1) the head velocity of density current has a function relationship with the slope gradients, and there is an optimal slope gradients which maximizes the head velocity under the same condition; 2)the relation between head velocity and the cubic root of buoyance flux is not a strict proportional function, deviating under small or large discharge; 3)the head shape is enlarged in the motion process of density current, and the ratio of thickness to length of the head decreases gradually; 4)the growth rate of the head increases with the increase of slope gradients and discharges, and finally tends to a steady rate. These results could  help  further understand the motion pattern of density current on  slope.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20160346