Cochoa viridis

A New Record of Birds in China——Zootbera monticola;

中国鸟类一新记录——大长嘴地鸫

Some parameters such as volume flux, nozzle width, outlet velocity, the height between nozzle and plate, and single nozzle hold-up water velocity were studied.

通过对气封装置中体积流量、喷嘴宽度、出口速度、喷嘴到钢板表面的距离、单个喷嘴阻挡水流的速度等几个参数的研究,选择了合理的数值,降低了生产成本,得到了最佳挡水效果。

The flow field of nozzle outlet is simulated by using FDM,and the influence of nozzle width B on its flow field is investigated.

用心形线表征了一种增压器无叶蜗壳梨形流道横截面轮廓 ,用有限差分法对增压器蜗壳内无叶喷嘴出口流场进行了数值模拟计算 ,研究了喷嘴宽度 (B)对其出口流场的影响。