【摘要】 针对热烟气在浮力作用下沿斜通道流动的现象,采用实验方法对倾斜角为20°两侧开口通道中截面上的温度分布进行了测量.通道长3 m,宽0.8 m,高1.0 m.热源功率为1 500 W,放置于通道底部中间位置.同时采用数值方法对上述通道在倾斜角为0,°10°和20°时通道内的热流场进行了预测.结果发现除了靠近热源附近之外,实验值与数值结果吻合得相对较好.整个实验与计算结果可为相关工程设计提供参考.更多还原

【Abstract】 The phenomenon of hot gas flows being buoyed along an inclined channel is the focus of this paper.Experiment methods were employed to measure the temperature distribution at the mid-plane in an open ended channel with an angle of inclination of 20°.The channel’s dimensions were 3m(length)×0.8m(width)×1m(height).A 1500W heater was located at the center of the channel bottom.Numerical methods were used to predict the thermal flow fields in the above channel with inclination angles of 0°,10° and 20°.The resulting numerical solutions of temperature agreed well with experimental values except near the heater.These results can be a reference for engineering design.更多还原