Effect of attack angle messurement error on extracting aerodynamic coefficients 攻角誤差對(duì)擬合氣動(dòng)系數(shù)的影響
Characteristics of flow resistance of pin finned drop - shaped tube at different attack angles 流體攻角對(duì)滴形釘頭管流體阻力特性的影響
Research on the measurement system of the attack angle between wheel and rail based on image identification 基于圖像識(shí)別的輪軌沖角測(cè)量系統(tǒng)研究
Being the nonlinear function of attack angle , the hydrodynamic forces acting upon the submersible are determined by a towing tank test 作用于潛水器上的水動(dòng)力系攻角的非線性函數(shù),可用拖曳水池試驗(yàn)加以測(cè)定。
On basis of the modeling results , the effects of mach number , attack angle and ramp angle on the inlet performance are analyzed 根據(jù)此數(shù)學(xué)模型,分析了攻角和進(jìn)口氣流馬赫數(shù)對(duì)進(jìn)氣道性能的影響,同時(shí)給出了斜板對(duì)進(jìn)氣道性能的影響。
Based on these experimental values , the hydrodynamic forces are identified by a general regression neural network ( grnn ) over a wide range of attack angles 利用這些試驗(yàn)值, grnn神經(jīng)網(wǎng)絡(luò)方法可以辨識(shí)出大攻角范圍內(nèi)的水動(dòng)力函數(shù)。
At different attack angles , mach numbers and ramp angles , the numerical calculations of inner and external flow field are performed for an adjustable mixed compression inlet 摘要對(duì)某可調(diào)混壓進(jìn)氣道在不同攻角、不同馬赫數(shù)、不同斜板角度下進(jìn)行了大量的數(shù)值計(jì)算。
Basing on the static aeroelasticity , the jig - shape and the attack angle design have been studied . generally , much computing time is needed in unsteady flow computation 利用現(xiàn)有條件自主開(kāi)發(fā)出適合定常、非定常流場(chǎng)計(jì)算和氣動(dòng)彈性研究的分布式并行計(jì)算機(jī)系統(tǒng)。
The report takes account into the influence of foreshore and shallow foreshore , roughness , slope , berm , wave attack angle , vertical wall and so on 報(bào)告給出了復(fù)雜斷面上波浪爬高和越浪量的計(jì)算公式,計(jì)算中考慮了前灘、邊坡糙率、邊坡坡度、平臺(tái)、波浪入射角以及豎墻等因素的影響。
The precision of the numerical results at a small attack angle is better than that at a big attack angle . it may owe to the approximate kutta condition adopted here 訓(xùn)一究工作,所得到的結(jié)果在小角度斜航時(shí)精度要好于作大角度斜航時(shí)的精度,這可能因?yàn)樗杉{的kutta條件所導(dǎo)致的。