查询词典 airfoils

It is proved that the dual time step algorithm is efficient in the simulation of unsteady flow with the prediction of vortex shedding over circular cylinders and shock buffeting over bicircular airfoils.

在非定常流动的数值模拟中引入隐式双重时间步方法，并对2种经典的非定常流动现象进行计算，取得令人满意的结果，证明双重时间步方法具有较好的精度和较快的收敛速度。

In this paper,a viscous/inviscid analysis and calculation method is used to analyze the aerodynamic performance of a series of novel airfoils for wind turbine.

风力机翼型气动性能是风力机气动设计和性能分析的重要基础。

The unsteady viscous motorial grid is fixed relative to airfoils. Numerical results are in good agreement with the experimental data. The method and the procedure presented in this dissertation are verified.

文中对比分析了不同方法、不同湍流模型之间的差异，获得了比较理想的计算结果，验证了本文数值求解技术的可行性以及计算程序的正确性。

The present work is mainly focused on developing airfoils numerical simulation methods for steady and unsteady transonic flow.

本文主要发展了计算翼型跨音速定常及非定常粘性绕流的数值模拟方法。

Based on the reviewing and comments made on several available design methods of transonic airfoils and wings, some criteria for a good numerical design method have been put forward.

l°对现有的跨音速翼型和机翼设计的CFD方法进行了分析和评价，提出了合理的设计方法所应满足的十条指标。

The pressure weighted interpolation method on collocated unstructured grid is used for numerical simulation of turbulent flow around airfoils.

利用同位非结构化网格上的压力加权修正算法，对翼型湍流绕流进行了数值分析。

After analyzing the numerical simulation results of the impeller blade with different scale, and comparing the flow field distributing, then one kind of double-head anti-unsymmetrical S mode airfoils is found which is suitable to the normal and the reversed blowing for double directions under the design operating condition and which can also satisfy the requirement for the reversible axial flow fan in subway.

分析缩放比例不同的可逆式轴流风机叶型的数值模拟结果，比较各种叶型的流场分布规律，寻找到一种适合于设计工况下正、反双向吹风的双头双机翼反向不对称S型叶型，能够满足地铁用可逆轴流风机的要求。

One type of blade airfoil with high efficiency of a general axial flow fan is adopted as original airfoil, and it is shortened according to different length scale, and then joined to the exportation circular arc of the original airfoil in the opposite direction. Assuring the streamline on the surface of the blade profile after smooth operation, a new kind of double-head anti-unsymmetrical S model airfoils has been structured to be researched in this paper.

采用一种效率比较高的普通风机叶片翼型作为原始翼型，按不同长度比例缩小原始翼型，反向搭接在原始翼型的出口圆弧处，经过光滑处理，保证叶型表面的流线形后，构成本文所研究的新型双头双机翼反向S型不对称翼型。

Of course, for more complex airfoils more parameters are needed.

当然，对于较复杂的翼型需要更多的参数。

In our next article we will go on with our consideration of airfoils.

在我们的下篇文章，我们会继续与我们考虑的翼型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。