Experimental study on particle settling of coral sand with different shapes
The setting velocity of coral sand in liquid is an important physical quantity reflecting sediment movement characteristics.However,due to the different shapes of coral sand,the existing formulas for calcu-lating setting velocity are not suitable.Based on A series of single particle settlement experiments have been carried out for three typical shapes of coral sand,namely rodlike,platy and blocky sand.Based on the experi-ment data,the settlement characteristics of coral sand with different shapes are analyzed and compared with the results calculated by various theoretical formulas.After selecting the classic formula for the settling velocity of coral sand particles and introducing the shape coefficient to modify the formula,so that the drag coefficient and setting velocity formulas of rodlike,platy and blocky coral sand particles are further deduced.These formulas fully consider the influence of irregular coral sand particle shape,and have higher calculation accuracy and ap-plicability.
万方数据
维普
