A PROPOSAL OF ONE DIMENSIONAL CALCULATION OF WATER SURFACE IN AN OPEN CHANNEL FLOW WITH LATERAL DISCHARGE AND TRIBUTARY

Abstract

The largest river in China is Chang Jiang. The length of Chang
Jiang is about 6,300 kilometers. Using two-dimensional or three-dimensional
analysis for the large water system network like Chang Jiang is difficult
because of the huge sum of computational complexity. So we use one-dimensional
analysis replacing the distributary and tributary flow with lateral discharge.
The conclusion is that exchanges of momentum between main river and tributary
river resemble Reynolds stress.