Calculation of open channel section optimum hydraulic parameters and parabolic index parabola
A relatively systematic study on the optimum hydraulic parameter of parabolic transaction and the calculation of parabolic optimum index have been studied in this paper. Through sorting out the variants and calculating the approximate integration of the equation of uniform flow for such transaction, this essay presents the simplified formula for the optimum hydraulic parameter of the open-channel water-flowing transaction in case of a given parabolic equation index. By analyzing the simplified equation, we found a new optimum equation index of parabolic transaction to be 3.35 on the condition that other parameters of the open-channel such as water flow, gradient and roughness stay unchanged. Our finds also show that the presentation of the optimum hydraulic parameter serves as the basis for the further optimization design of parabolic transaction. Additionally, through the comparison of the optimum index of parabolic transaction and other hydraulic optimum transactions, the optimum index of parabolic transaction shows a higher economic indicator and therefore, it is worth extending the application.
parabola form channeluniform flow in open channelbest hydraulic cross sectionhydraulic parameter
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