DYMAMICS OF FLUID FLOW

Example 3

Water flows in channel (cross-section of the shape of isosceles triangle) of bed width and sides making an angle 45 0 with the bed. Determine the relation between depth of flow and the bed width for the condition of: (i) maximum velocity; (ii) maximum discharge. Use Manning's formula.

Solution :
Water flow in a channel of isosceles triangular cross-section is shown in the following figure for which depth of flow and bed width are and , respectively
       
   
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