Experimental study on the flow pattern and Artificial roughness for open channel roughness value
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Abstract:
Using 3 kinds of different roughness of artificial roughness channel, in 9 different bottom slope, 6 groups of different flow conditions, Studied the relationship between the roughness values and roughness, Froude number of open channel flow. The results show: ①Under the same flow conditions: With the increase of Froude number Fr, the roughness n value increases. Under the same Froude number Fr, The greater the roughness Δ, the greater the roughness value of n . ②Under different absolute roughness :When Fr<0.70, N roughness values with Froude number Fr related, and absolute roughness Δ has little to do, n=f(Fr);When 0.7Keywords:
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