This paper is focused on the aeroacoustic properties of low speed axial fan running in inlet turbulence with high intensity and small correlation scales.
详细描述紊流进气条件下低速轴流风机的气动噪声的试验和理论研究气动试验包括测量了三种不同紊流进气条件下风机进口的紊流强度、紊流尺度、风机叶片的尾迹宽度以及平均速度、压力等参数声学试验包括测量了风机排气端的总声级和１／３倍频程频谱理论上首次把尾涡脱落和进气紊流结合起来完整地研究了风机的宽频噪声，给出了轴流风机宽频源的声压谱密度函数的表达式，在计算叶片脉动力时，首次采用可分离的波数函数模型，使得计算过程大为简化理论和试验都表明，尾涡脱落和进气紊流同是风机的主要声源，相对而言，紊流进气对噪声的影响要大于尾涡脱落，其中紊流强度是影响风机噪声的最主要参
Firstly,equations of motions of aircraft short period in consideration of atmospheric turbulence,pilot model,Dyrden atmospheric trubulence model and the mathematics model of Pilot-aircraft closed-loopsystem are founded.
首先建立了大气紊流下的飞机本体短周期运动方程、驾驶员模型、Dyr den大气紊流模型及人机闭环系统模型 ;然后利用Matlab软件在时域内进行了数值仿真 ,仿真结果表明 ,对于装有电传操纵系统的飞机来说 ,大气紊流对驾驶员诱发振荡的影响不明显。
This paper establishes the atmospheric turbulence model of agricultural aircraft flying at minimum altitude.
在建立农林飞机超低空飞行时的大气紊流模型基础上,结合频域和时域两种计算方法研究了各种不同紊流强度下的大气紊流对农林飞机超低空飞行的影响,同时采用加速度综合评分的方法对其影响进行定量评估,最后给出了大气紊流对农林飞机超低空飞行影响的规律,对工程应用有一定的参考价值。
Generation and extension methods of 3D atmospheric turbulence field;
三维空间大气紊流场生成与扩展方法
DYNAMIC RESPONSE OF THREE-DIMENSIONAL PANEL WITH THERMAL EFFECT TO ATMOSPHERE TURBULENCE
热环境下三维壁板大气紊流动力响应分析
Pulsation response of a two dimensional wing to atmosphere turbulence in supersonic flow
大气紊流作用下超音速二元机翼的脉动响应
Analysis of the Longitudinal Flight Parameter Under Atmosphere Turbulence
大气紊流环境下的纵向飞行参数响应分析
Research on the Models of Wind Shear and Atmospheric Turbulence for Their Application in Flight Simulation
风切变和大气紊流模型在飞行仿真中的应用研究
Generation and Application of Spatial Atmospheric Turbulence Field in Flight Simulation
用于飞行仿真的空间大气紊流场生成与应用研究(英文)
liquid viscous-gas turbulent
液相层流-气相紊流
The system input in this case is turbulent air which produces random pitching motion of the vehicle.
在此情况下，系统的输入是紊流大气，它使飞行器产生随机俯仰运动。
Experimental Analysis on Multi-tube Pnumatic System for Ash Conveying;
双管紊流密相气力除灰系统试验研究
Lagrangian simulation of particle dispersion in gas-solid turbulent shear flows
气固紊流剪切流中颗粒弥散的拉格朗日模拟
Aerodynamics of the Vocal Tract, Turbulence Noise, Abrupt Release, Bursts.
声道的空气动力学，紊流噪音，瞬间释放，突发音。
Numerical Simulation and Analysis of Three-dimensional Turbulence in Air Filter;
空气滤清器内三维紊流数值计算与分析
An Experimental Investigation on the Effect of Turbulence on Aerodynamic Characteristics of a Dished Paraboloid
气流紊流度对碟形抛物面气动力特性影响的实验研究
Turbulent Wind Action on Long Span Bridges with Separated Twin-girder Decks
紊流风对大跨度分体双箱梁桥梁的作用
Study on 3-D Turbulent Numerical Simulation on Airflow and Optimal Design of Greenhouse;
蔬菜大棚内部流场三维紊流数值模拟及大棚断面优化研究
Optimization Design of Air Filter Structure Based on Three-Dimensional Turbulence Numerical Simulation;
基于三维紊流数值模拟的空气滤清器结构优化设计
This turbulence caused the flow pattern in the tunnel to be similar to the flow pattern in free air at a higher Reynolds number.
这种紊流使风洞内的流谱与在较高的雷诺数下自由气流中的流谱相似。
Comparison of several turbulent models for calculating turbulent separated flows passing on sill
几种紊流模型在底坎紊流分离流计算中的对比
Study of Treatment Effect of Da Cheng Qi Tang Associates with Magnesium Sulfate on the Sphincter of Oddi Dyskinesia in Rabbits
大承气汤联合硫酸镁治疗兔Oddi括约肌功能紊乱的实验研究