Abstract Of increasing importance are nowadays ducts of rectangular cross-section with large-radius rounded corners. They are used for large air flow rates at low pressure levels — typically for air flow distribution in buildings ventilation and heating systems. Paper develops an analytic model of turbulent flows in these ducts. It makes possible in particular evaluation of velocity profiles – and volume flow rates as a function of duct cross-section shapes. The model was validated by comparing the solutions with full-scale duct laboratory measurements.

中文翻译：

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矩形截面圆角管道中湍流的代数模型

摘要 如今，具有大半径圆角的矩形横截面管道越来越重要。它们用于低压水平下的大空气流速——通常用于建筑物通风和供暖系统中的气流分布。Paper 开发了这些管道中湍流的分析模型。它可以特别评估速度曲线 - 以及作为管道横截面形状函数的体积流量。该模型通过将解决方案与全尺寸管道实验室测量值进行比较来验证。