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在对现有通风空调系统常用气流组织形式对比分析的基础上,提出了一种新型的竖直壁面贴附式送风模式.通过全尺寸实验测试的方法,研究了不同送风速度下竖直向贴附区和水平向空气湖区的三维速度场特性,得到了用于该模式定量研究的轴线速度衰减、送风主体厚度扩展等气流组织特性参数的计算式,为实际工程设计应用奠定了基础.研究表明,竖直壁面贴附式送风在工作区能够形成类似于置换通风的气流组织分布,同时采用条缝风口送风时具有二维特性,研究范围内偏转段的存在不会对气流组织产生影响,该模式可以近似按冲击射流理论进一步拓展研究.
Based on the comparative analysis of the commonly used airflow patterns in the ventilation and air conditioning systems, a new type of vertical wall-attached air supply mode is proposed. Through the full-scale experimental test, To the three-dimensional velocity field characteristics of the attached area and the horizontal air lake area, the calculation formulas of axial tissue velocity parameters such as the axial velocity attenuation and the thickness of the main body of the blast air used in the quantitative study of the model were established, which laid the foundation for practical engineering design and application The research shows that the vertical wall attached air supply can form the air distribution similar to displacement ventilation in the work area and the two - dimensional characteristics when the air is supplied by the slotted air outlet. The existence of the deflection section in the study area will not affect the air flow The impact of the organization is that this model can be expanded to a similar extent by the theory of impinging jets.