| 1. | The ratios of the flow rate ( q / q ) are 1 . 4 1 . 0 0 . 6 respectively . three blade - to - blade passage and the three cross - section along the axial direction at each of the passages were selected for measurements
测试窗口分别取在三个不同的叶槽中，在每个叶槽中沿轴向测试三个断面和一个间隙断面。 |
| 2. | The hub leakage flows were modeled and calculated in two different ways : the flow fields inside hub axial gap were calculated together with blade passage flow in an integrated manner , and the leakage flows due to the hub axial gap were modeled as inlet boundary conditions
计算时分别采用了两种模化途径，即耦合求解转子上游叶根间隙内空腔与转子通道内的流场，以及求解将叶根同间隙模化为进口边界的转子流场。 |
| 3. | One cooling method that has gained increasing importance is endwall film - cooling , where coolant air is discharged though discrete holes in the inner and outer endwalls of a turbine blade passage . after leaving the holes , the coolant forms a protective layer between the hot mainstream gas and the surface that is to be protected
目前广泛采用的一种重要冷却方法是涡轮叶栅端壁气膜冷却，该方法中冷空气穿过涡轮叶片上内外端壁离散冷却孔进行交换，且冷空气流经冷却孔后在主流热空气与被保护表面之间形成保护层。 |
| 4. | Measured hole mass flows and a constant static pressure mixing analysis , together with the measured losses , allowed the decomposition of the losses into three distinct entropy generation mechanisms : loss generation within the hole , loss generation due to the mixing of the coolant with the mainstream , and change in secondary loss generation in the " blade passage
论文还进行了叶片冷却孔质量流的测量与常静压气流混合分析，结合前述气动力损失和冷却空气损耗的测量结果表明，端壁气膜冷却的综合损失明显地由三个部分组成：叶片冷却孔内产生的损失；由于冷却空气与主流热空气的混合产生的损失；二次流的变化产生的损失。 |
| 5. | In this paper , based on the navier - stokes equation and the k - turbulent model , the numerical simulation of the 3d turbulent flow in a centrifugal impeller , of which specific speed is 93 . the distribution of the velocity and pressure in the blade - to - blade passage are presented at the design and off - design operating conditions . the simulation results were verifiable with the results measured by piv
本文基于n ? s方程和标准的k ?双方程紊流模型，采用商用cfx - tascflow计算软件对一离心泵叶轮模型进行了叶轮内部三维紊流数值模拟，得到了三个典型工况下、从轮毂到前盖板每一个断面上的速度和压力分布。 |
| 6. | The effect of leakage flow due to the upstream hub axial gap on the rotor performance and the mechanism of interaction between the hub leakage flow and the rotor blade passage flow were studied based on the numerical simulations of the flow fields of a transonic compressor rotor with upstream hub leakage
摘要为研究压气机转子上游叶根轴向间隙泄漏流对转子性能的影响程度以及泄漏流与转子流场之间的相互作用机制，对带有叶根泄漏流的跨声压气机转子流场进行了数值模拟。 |
| 7. | Results from this investigation show that the loss generation within the coolant holes is substantial and that ejection into regions of low static pressure increases the loss per unit coolant mass flow . the results also reveal strong interactions between endwall coolant ejection and secondary flow in the blade passage . the secondary flow has a strong influence on coolant trajectories and coolant ejection delays the three - dimensional separation of the inlet boundary layer on the endwall , chang the secondary flow and reduces its associated losses
本文的研究成果显示，冷却孔内产生的损失是主要的，并且低静压区域的冷空气喷射会增加单位冷空气质量流的消耗；喷射的冷空气与叶栅端壁流场之间有强烈的相互作用；二次流对冷却空气的流动轨迹有较强的影响；冷空气喷射能延缓端壁入口边界层的三维分离、改变二次流从而减少其相关损耗。 |
