| 摘要: |
| [目的]寻求矩形断面明渠均匀流水深和渠道底宽的直接计算公式.[方法]通过对矩形断面明渠均匀流水力计算公式进行恒等变形,推导出计算矩形明渠均匀流水深和渠道底宽的迭代公式,再与合理的迭代初值配合使用.[结果]得到矩形明渠均匀流水深和渠道底宽的直接计算公式,误差分析及实例计算表明,在工程常用范围内,矩形均匀流水深和渠道底宽的最大相对误差均小于0.2%.[结论]该公式形式简捷,计算精度高,能满足工程实践要求. |
| 关键词: 矩形断面 明渠 均匀流 水力计算 直接计算公式 |
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| 基金项目:国家“863”高技术研究与发展计划项目（2002AA62Z3191）；陕西省重大科技专项计划项目（2006-01） |
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| Formula on direct calculation of water depth of uniform flow in rectangular open channel |
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| Abstract: |
| 【Objective】 The study was to seek the essence of calculating water depth and width of channel's bottom of rectangular open channel a good calculation-method.【Method】 Through proper mathematic exchange from the basic equation of rectangular open channel,the iterative formula for quick calculation of water depth and width of channel's bottom can be induced and used with the reasonable first iterative quantity.【Result】 Through error analysis and calculation,in the practical area of engineering,the maximum error of water depth and width of channel's bottom of uniform flow in rectangular channel was less than 0.2 percent respectively.【Conclusion】 The formula is short-cut and correct which can satisfy the requirement of engineering practice. |
| Key words: rectangular section open channel uniform flow hydraulic calculation direct calculation-formula |
