查询词典 turbomachine

Wavelet neural networks; Pareto genetic algorithm ; fluidic element ; turbomachine ; optimization design

小波神经网络； Pareto遗传算法；射流元件；叶轮机械；优化设计

Using aerodynamics theory of turbomachine with encircling control in blades, this paper expounded basic principle and design method for double array cascade GKJ fans which were made for the first time.

本文应用叶片机械绕流控制的气动理论，阐述了双列叶栅的基本工作原理与设计方法，介绍了首次研制的GKJ双列叶栅风机的综合性能试验曲线。

Approximation model ; turbomachine ; aerodynamic optimization design

近似模型；叶轮机械；气动优化

Aerodynamic optimization technology for compressor design plays an important role in the development of high performance axial flow compressor, multiobjective genetic algorithm are currently being widely used in turbomachine optimization design.

近年来，多目标遗传算法在叶轮机械优化设计中得到了广泛的应用。

Results obtained for several turbomachine cascades demonstrate both fast convergence speed and good coincidence agreement of calculated result with the experimental value or available analytic solution.

对一些叶栅计算的结果表明：本方法收敛迅速、稳定，计算结果与实验结果基本一致。

Firstly, based on the requirement of CFD application in modern turbomachine and grasping FLUENT that is a commercial preprocess code, secondary exploiture, which is a complex coarse that is from designment and optimization of project to exporting result and database management, was finished by utilizing OOP and database technologies, Plentiful time for numerical simulation of centrifugal compressor was saved by using the parameterized program.

首先，本文主要根据CFD 参与现代透平机械的要求，在深刻理解、熟悉了大型商业软件FLUENT 的基础上，采用面向对象技术和数据库技术，针对离心压缩机从设计、优化到方案确定，再到结果输出并进行数据库管理的全过程，进行了二次开发。

Reducing secondary flow losses is one of the key techniques to improve aerodynamic performance of turbomachine blade. Non-axisymmetric Endwall Profiling of turbomachinery blade has been proved to be an effective technique in reducing pithwise pressure gradient between pressure surface and suction surface.

降低叶栅内部二次流流动损失是提高透平机械通流效率的重要方法之一，非轴对称端壁成型技术已被验证能够有效地减小叶栅压力面与吸力面之间的横向压力梯度，降低叶栅内部二次流流动损失，提高叶栅效率。

Based on Wu's general three-dimensional turbomachine flow theory, the flow field matrix line relaxation computer program was established for flow along the relative stream surface S2, employing non-orthogonal curvilinear coordinates and non-orthogonal velocity components.

针对叶轮机械S_2流面反问题的计算，介绍了使用任意非正交曲线座标和非正交速度分量的S_2流面反问题流场线松弛解法计算机程序。并对该程序与目前一般常用的速度推广法程序和矩阵直接解法程序的不同之处，作了简要的比较和评论。

Based on an analvsis of the aerodvnamicnoise source and its theoretical moddf of thelow pressure axial flow fan,and with the theory of the boundary layer and the aerodynamictheory of peripheral control inside the turbomachine blade,a new peripheral control methodwith additional guide vanes fitted on the blade surface is preposed.

在分析轴流式风机噪声源及其理论模型的基础上，应用叶轮机械叶片内部绕流控制的气动理论与边界层理论，提出了设置在工作轮叶尖与沿叶高上、中、下后缘处的附加导叶装置，以控制叶尖间隙噪声与沿叶高出口尾迹涡流噪声。

Research on the inverse,hybid and optimization problems in engineering science with emphasis on turbomachine aerodynamic:review of,Chinese advances.In:Dulikravich G.S.

长期从事流体力学及流体机械、叶轮机内流动数值模拟、环保产品研制及计算机应用软件开发等教学和科学研究工作。

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。