CAJ | 학술논문

利用华东师范大学河口海岸学国家重点实验室的波-流-泥沙变坡水槽,进行系列二维均匀流平衡输沙情况下悬沙扩散特性研究实验.根据实验数据,计算不同水流情况下的悬沙浓度垂向分布,确定悬沙垂向扩散系数及它的垂向分布.所得结果表明悬沙垂向扩散系数与水流扩散系数成正比,其比例系数正比例于摩阻流速;悬沙扩散系数的垂向分布可用抛物线来描述.
이용화동사범대학하구해안학국가중점실험실적파-류-니사변파수조,진행계렬이유균균류평형수사정황하현사확산특성연구실험.근거실험수거,계산불동수류정황하적현사농도수향분포,학정현사수향확산계수급타적수향분포.소득결과표명현사수향확산계수여수류확산계수성정비,기비례계수정비례우마조류속;현사확산계수적수향분포가용포물선래묘술.
Experiments on sediment mixing characteristics by two-dimensional uniform currents were carried out by using wave-flow-sediment flume.From experimental data,the vertical distribution of suspended sediment concentration and vertical sediment diffusion coefficient in different flow conditions are determined.It is found from experimental results that the vertical sediment diffusion coefficients are proportional to vertical fluid diffusion coefficients and their ratio is related to the bed shear velocity.The vertical distribution of sediment diffusion coefficient may be described by parabola.