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In the paper the time marching method is used to solve the control equations and a computational analysis of the flow field in a unshrouded impeller is presented.
中文摘要：本文利用数值计算方法对一带分流叶片的离心压气机工作轮内部三维粘性流场进行了数值模拟。
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Analysis one-way aerodynamic and strength fluid-solid interaction of an unshrouded centrifugal impeller blade under different conditions.
采用非结构化网格有限体积法和有限元方法，进行了不同工况半开式离心叶轮叶片单向气动与强度流固耦合分析。
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Flow simulation and performance analysis are conducted for the stage of a high energy head unshrouded centrifugal compressor with vaneless and tandem diffuser respectively using CFD software. The flow field distribution and performance comparison are offered in the two conditions.
使用 CFD 软件对某高能头半开式离心压缩机的级，在分别采用无叶扩压器和串列扩压器时进行了流动模拟和性能分析，给出了两种情况下的流场分布和性能比较。
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The numerical results show that:(1) the throughflow wake is considerably influenced by the tip clearance. The low-kinetic-energy fluid accumulated in the shroud/pressure side of the unshrouded impeller, but in the shroud/suction region for 0.0 tip clearance;(2) there possibly exists an optimum size of the tip-clearance which is not the zero tip clearance to make the flow loss minimized.
研究结果表明，(1)NASA低速大尺度离心压缩机半开式叶轮的低速尾迹区在压力面与轮盖的角区，而相应的闭式叶轮的低速尾迹区聚集在轮盖的中心位置；(2)数值实验表明，叶顶间隙并非越小越好，可能存在一个最优间隙，使得叶轮流动损失最小。
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A basic relational model for tip leakage mixing loss of unshrouded blades for compressible flow was derived from theoretical analysis of Denton. Relationship. It reflected the influential factors such as blade surface static pressure, chordwise distribution of tip clearance, discharge coefficient and total pressure loss coefficient in the tip region.
借鉴Denton不可压叶尖泄漏损失的理论分析，推导出可压缩流动中叶尖泄漏掺混损失基本关系式，其集中反映了尖区叶表压强、叶尖间隙、泄漏流流量系数及总损失系数影响。
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- 更多网络解释与unshrouded相关的网络解释 [注：此内容来源于网络，仅供参考]
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unshrouded：无遮盖的
unshrouded impeller 开式叶轮 | unshrouded 无遮盖的 | unshunted 无分路的未旁路的
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unshrouded impeller：半开式叶轮
unshrinkable wool 防缩羊毛 | unshrouded impeller 半开式叶轮 | unsized paper 未施胶纸
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unshrouded impeller：开式叶轮
unshorting 消除短路 | unshrouded impeller 开式叶轮 | unshrouded 无遮盖的
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unshrouded impeller：半开式叶轮,开式叶轮
unshrouded free standing blade 自由叶片 | unshrouded impeller 半开式叶轮,开式叶轮 | unshrouded wheel 无围带的叶轮
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unshrouded wheel：无围带的叶轮
unshrouded impeller 半开式叶轮,开式叶轮 | unshrouded wheel 无围带的叶轮 | unsignalized intersection 无信号交叉口
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