Material flow in a rectangular quasi-two-dimensional silo discharging simultaneously through two orifices has been investigated. A number of variations of the proximity of the sidewall of the silo with an individual orifice and the distance between the two orifices have been tried. It has been observed that beyond a certain distance between the two orifices, a neutral axis parallel to the axes of the orifices can be identified. The neutral axis divides the flow field in the silo between two non-interfering zones each of which is created due to the flow through a single orifice. Flow field created by a single orifice on the other hand depends on its proximity to the sidewall. Based on the above observation, an extension of the kinematic model for material discharge through a single orifice has been extended for predicting the velocity field during simultaneous discharge through two orifices. Based on the distance between two orifices, the limitation of this model has also been predicted.

中文翻译：

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从准二维矩形筒仓通过两个对称和不对称放置在底部的孔口的颗粒排水

研究了通过两个孔口同时排放的矩形准二维筒仓中的物料流。已经尝试了具有单个孔口的筒仓侧壁的接近度以及两个孔口之间的距离的多种变化。已经观察到，超出两个孔口之间的特定距离，可以识别出平行于孔口轴线的中性轴。中性轴将筒仓中的流场划分为两个互不干扰的区域，每个区域都是由于流经单个孔口而产生的。另一方面，由单个孔口产生的流场取决于其与侧壁的接近程度。基于以上观察，通过单个孔口进行材料排放的运动学模型的扩展已扩展到预测通过两个孔口同时排放时的速度场。基于两个孔口之间的距离，也预测了该模型的局限性。