推进技术
推進技術
추진기술
JOURNAL OF PROPULSION TECHNOLOGY
2000年
6期
83-88
,共6页
郑日恒%Bray K N C%Rogg B%Lecordier B
鄭日恆%Bray K N C%Rogg B%Lecordier B
정일항%Bray K N C%Rogg B%Lecordier B
粒子速度成像%对抗流%互相关%自相关%速度分布%流动测量
粒子速度成像%對抗流%互相關%自相關%速度分佈%流動測量
입자속도성상%대항류%호상관%자상관%속도분포%류동측량
Particleimage velocimetry%Counterflow%Cross-correlation%Autocorrelation%Velocity distribution%Flow measurement
在常规自相关粒子图像测速(PIV)系统的基础上,发展了一个采用CCD像机的互相关粒子图像测速系统.用这一新系统测量了对抗流流场的结果表明,这一技术克服了自相关粒子图像测速技术在测量具有滞止点的流场中的困难.实验说明,与自相关粒子图像测速技术相比,这一技术更快捷有效.
在常規自相關粒子圖像測速(PIV)繫統的基礎上,髮展瞭一箇採用CCD像機的互相關粒子圖像測速繫統.用這一新繫統測量瞭對抗流流場的結果錶明,這一技術剋服瞭自相關粒子圖像測速技術在測量具有滯止點的流場中的睏難.實驗說明,與自相關粒子圖像測速技術相比,這一技術更快捷有效.
재상규자상관입자도상측속(PIV)계통적기출상,발전료일개채용CCD상궤적호상관입자도상측속계통.용저일신계통측량료대항류류장적결과표명,저일기술극복료자상관입자도상측속기술재측량구유체지점적류장중적곤난.실험설명,여자상관입자도상측속기술상비,저일기술경쾌첩유효.
A cross-correlation Particle Image Velocimetry(PIV)system with a CCD camera was developed,based on a typical conventional auto-correlation Particle Image Velocimetry system.The results obtained by using this PIV technique for the measurement of counterflow velocity field show that the difficulty arisen from the auto-correlation PIV for the measurements of velocity field including a stagnation point has been overcome with this approach.In addition,compared with auto-correlation PIV,the experiments have demonstrated that this approach is more efficient.
