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## Practical Hydraulic Calculation of Egg-shaped Cross-section Non-pressure Pipeline

WU Yan-zhi;
Egg-shaped cross-section non-pressure pipeline in the renovation and expansion of municipal sewage works has a wide application,hydraulic calculation for this section is still lacking of accurate and convenient method.This paper consists of four egg-shaped arc section(common egg-shaped cross-section) non-pressure pipes for the study,lists the equation of egg-shaped section in several procedures,directly use of the integral form of the function,solving the equations expressing the unity of hydraulic elements.The outfall water flow of the egg-shaped section can be obtained directly through substituting relevant elements into non-pressure hydraulic flow formula.It can also be applied by "dichotomy" trial or MATLAB programming to solve the cross-section and the free flow of critical depth and normal depth.
【Fund】： 安徽高等学校省级自然科学研究重点项目(KJ2011Z320);; 合肥学院土木工程重点学科建设项目(2014xk04)
【CateGory Index】： TV134
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