Calculation of Uniform Flow Depth with Circular Cross-section Based on MATLAB

According to such the disadvantages as the large error and small scope of the test algorithm and chert method in the calculation of the current uniform low depth with circular cross-section,a new approximate formula should be proposed.Through the mathematical transformation for the critical flow formula with circular cross-section,the mathematical model of the uniform flow depth is achieved,then by using MATLAB to do the data fitting processing,a new approximate-direct calculation formula is obtained for solving the uniform flow depth with circular cross-section.The example computation and error analysis indicate that the most greatly relative error of this formula is smaller than 1.6% in practical project scope.Compared with the existing calculation formulas,the formula proposed here is convenient in calculation and wide in suitability,and could be used for the actual reference of projects.