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1)  unshrouded impeller
半开式叶轮
1.
Thw flow field in a centrifugal compressor with unshrouded impeller and vane diffuser is numerically investigated using a three-dimensional Navier-Strokes code and applying the central discretization scheme, Yang&Shih k-ε turbulence model and explicit four-order Runge-Kutta method in this paper.
使用Fine/Turbo三维粘性计算程序对含分流叶片半开式叶轮的离心压缩机级内三维粘性流场进行数值分析。
2.
The time marching method was used to solve the control equations, and a computational analysis of the flow field in a centrifugal compressor with unshrouded impeller and vaned diffuser was presented.
应用时间推进法求解连续性方程、时均N-S方程、能量方程、理想气体状态方程及Yang&Shihk-ε紊流模型,对含分流叶片的半开式叶轮及叶片扩压器组成的离心压缩机模型级级内三维粘性流场进行了数值分析,得出了与实测结果一致的性能曲线。
2)  semi-open impeller
半开式叶轮
1.
The 2-phase 3-D turbulent flow of the pulp fiber suspension was simulated in the hydraulic channel composed of suction chamber,front board,semi-open impeller and volute casing for the first time.
并着重对前盖板与叶轮间隙内的流动进行了分析,揭示了半开式叶轮输送两相流介质的优点所在。
3)  semi-open centrifugal impeller
半开式离心叶轮
1.
Cavitation in semi-open centrifugal impellers for a miniature pump;
微型泵半开式离心叶轮的空化性能
2.
Two semi-open centrifugal impellers were prepared with diameters of 36 mm and the same blade section profile.
在实验中使用了两个外径36mm、具有相同叶片翼型的半开式离心叶轮,在转速11000r。
4)  centrifugal pump with semien closed impellerpump
半开式叶轮离心泵
5)  open impeller
开式叶轮
6)  single shrouded wheel
半闭式叶轮
补充资料:半开式叶轮
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性质:没有轮盖的离心式叶轮。由整块锻件铣制成型,叶片和轮盘的一整体,且都做成径向直叶片。其结构强度高,叶轮的圆周速,度可达450~500m/s,单级压力比高,但叶道中气流速度和马赫数较高,泄漏损失较大,级效率此闭式叶轮低,工况稳定性差。广泛用于内燃机透平增压器和小功率燃气轮机的离心式压缩机,在固定式离心式压缩机上的应用也增多。

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