The Harmonic Wavelet is firstly used for time-frequency analysis and feature extraction of pulsation amplitude and frequency and development of rotating stall and inlet vortex.
文中对采用入口导流器调节的离心通风机的旋转失速和进口涡流问题进行了实验研究，并借助谐波小波对旋转失速和进口涡流的频率、幅值特性及动态过程进行了时频分析和特征提取，揭示了旋转失速和进口涡流发展的规律及二者对风机性能的影响。
Based on TMS320F240 DSP,intake swirl control system is investigated.
基于TMS320F240 DSP开发的进气涡流控制系统,通过对节气门开启角度的自动控制并与切向气道或螺旋气道配合使用来组织有效的进气涡流,同时对进气涡流的强度进行自动控制,有效地改善了发动机的燃烧,从而优化了发动机动力性、经济性等性能指标。
In this paper,a water analog for intake swirl was induced,which simulated the 1150 G single cylinder engine.
主要介绍了一个针对 115 0G单缸柴油机进气道结构的进气涡流水模拟装置和一套用于测量二维流场的激光粒子速度场仪 (PIV) ,用它们来测量旋流器在气缸内产生的涡流流场 ,目的是为研究旋流器在气缸内产生涡流的能力和涡流在缸内的发展情况。
The intake swirl in the cylinder was induced by a swirler which was fixed in one of two intake ports.
采用在进气门上方安装旋流器的方法产生进气涡流 。
On the rig of steady flow,the adjustment characteristic of intake swirl of two kinds of double-intake-port of diesel engine,which composed of tangential port and helical port,was tested the experimental results indicated that the characteristics of variable intake swirl of the two kinds of double-intake-port were very different.
在稳流气道试验台上,分别对两种由直气道和螺旋气道组合的双进气道柴油机的进气涡流调节特性进行了试验,结果显示:两种组合方式下的双进气道的可调进气涡流特性存在很大差异。
The new intake port for 1132Z diesel engine was designed according to the principle of variable intake swirl intensity.
按照可调进气涡流进气道的设计原则设计了1132Z柴油机新的气道组合,该气道组合的数值计算结果表明,调节直气道内的挡板高度可以调节缸内涡流比;分析了气道内的流场分布,总结出柴油机进气涡流可调的机理,最后的发动机台架试验表明,在最大扭矩点调节涡流比可以使油耗降低7。
Based on the newly designed 1132Z single cylinder diesel engine,a set of variable intake swirl system was developed,including the development of variable swirl intake manifold,the variable swirl actuating mechanisms and the ECU based on the AduC812 MCU.
以1132Z单缸柴油机为平台,研制了电控可调进气涡流系统,包括可调涡流进气道、可调涡流执行机构和基于ADUC812单片机的电控单元。
Research on Feature of Rotating Stall and the Inlet Vortex in Centrifugal Fans;
离心通风机旋转失速和进口涡流特征研究
The Improvement of Inlet Turbulence Boundary Condition in CWE and Detached Eddy Simulation;
计算风工程入口湍流条件改进与分离涡模拟
Eddy Effect of Tee Junction and Its Influence on Lifespan of Superheater
进口等径三通的涡流效应及对过热器寿命的影响
Investigation on Flow Characteristics and Migration Mechanisms of Inlet Hot Streaks in a Vaneless Counter-Rotating Turbine;
无导叶对转涡轮流动特性分析及其进口热斑迁移机理研究
Influence of Variable Swirl Intake Manifolds for Gasoline Engine on In-Cylinder Swirl Characteristics
汽油机可变涡流进气管对缸内涡流特性的影响
The Research of Vertical Vortex in Hydraulic Intakes;
水工建筑物进水口前立轴旋涡的研究
Also, the chamfer of the stay vanes entrance and the surface roughness of the flow channel were optimized by the numerical investigations.
亦对固定导叶入口冲角、涡壳壁面粗糙度对流动的影响进行了定量分析。
Turbulence in air or water caused by the motion or action of an oar, propeller, jet, or airfoil.
涡流由船桨、推进器、喷气机或机翼运动引起的空气或水的涡流
Diesel Engine Intake Swirl Control System Based on DSP
基于dsp的柴油机进气涡流控制系统
The Performance of 1132Z Single-cylinder Diesel Engine With Variable Swirl System
具有可调进气涡流的1132Z单缸机性能
Analysis of the combustion and flow field characteristics of advanced vortex combustor
先进旋涡燃烧室流动与燃烧特性分析
Furthermore, the horseshoe shape vortex system occurred to the upstream of the jet exit and the layer structure of vortexes occurred to the wake of the reverse flow region downstream of the jet are also investigated.
另外，观测到射流喷口上流的马蹄涡系以及射流逆流区下游尾迹区旋涡的层状结构形式。
Large Eddy Simulation of Turbulence Characteristic Through Intake Process of Internal Combustion Engines;
内燃机进气过程缸内湍流流动特性的大涡模拟
Research Progress on the Vortex Shedding Characteristics in a Heated Circular Cylinder
流体绕流热柱体旋涡脱落特性研究进展
A vortex, as of a whirlwind or whirlpool.
涡流，如旋风或旋涡的
Theoretical Discussion and Structural Optimization of Swirlmeter;
旋进旋涡流量计的原理探讨和结构优化
An Analysis of the Air Flowing Coefficient and Swirl Intensity of Helical Inlet Manifold in Diesel Engines;
柴油机螺旋进气道充气系数与涡流强度的分析
Software Development of Improved Digital Vortex Flowmeter with Low-power and Two-wire
改进的低功耗、两线制数字涡街流量计软件研制