红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
6期
1710-1714
,共5页
王殿恺%洪延姬%李倩%叶继飞
王殿愷%洪延姬%李倩%葉繼飛
왕전개%홍연희%리천%협계비
彩色纹影%高超声速%激波相互作用%流场诊断
綵色紋影%高超聲速%激波相互作用%流場診斷
채색문영%고초성속%격파상호작용%류장진단
color schlieren%hypersonic%shock wave interaction%flow diagnostics
针对高超声速流场波系结构复杂、激波相互作用强、激波强度差别大等特点,发展了非侵入式、高灵敏度的彩色纹影流场显示技术,结合彩色滤光片设计技术和高速摄影技术,将彩色纹影系统的空间分辨率提高至0.1 mm量级,时间分辨率达到1 s量级。在高超声速激波风洞中分别研究了斜激波相互作用产生的正规反射和马赫反射激波结构,以及斜激波与弓形激波相互作用产生的IV型激波干扰,得到了清晰的彩色纹影照片,细致展现了待测流场的复杂结构,证明了该彩色纹影技术能够为高超声速流场诊断提供有力的技术支撑。
針對高超聲速流場波繫結構複雜、激波相互作用彊、激波彊度差彆大等特點,髮展瞭非侵入式、高靈敏度的綵色紋影流場顯示技術,結閤綵色濾光片設計技術和高速攝影技術,將綵色紋影繫統的空間分辨率提高至0.1 mm量級,時間分辨率達到1 s量級。在高超聲速激波風洞中分彆研究瞭斜激波相互作用產生的正規反射和馬赫反射激波結構,以及斜激波與弓形激波相互作用產生的IV型激波榦擾,得到瞭清晰的綵色紋影照片,細緻展現瞭待測流場的複雜結構,證明瞭該綵色紋影技術能夠為高超聲速流場診斷提供有力的技術支撐。
침대고초성속류장파계결구복잡、격파상호작용강、격파강도차별대등특점,발전료비침입식、고령민도적채색문영류장현시기술,결합채색려광편설계기술화고속섭영기술,장채색문영계통적공간분변솔제고지0.1 mm량급,시간분변솔체도1 s량급。재고초성속격파풍동중분별연구료사격파상호작용산생적정규반사화마혁반사격파결구,이급사격파여궁형격파상호작용산생적IV형격파간우,득도료청석적채색문영조편,세치전현료대측류장적복잡결구,증명료해채색문영기술능구위고초성속류장진단제공유력적기술지탱。
A non- invaded and high resolution color schlieren system was developed to diagnose the hypersonic flow field with complex shock wave structures, intensive shock interactions and different shock intensity. The key technique of color schlieren system is the color filter. A high sensitive color filter with 6 regions is designed. High speed color camera and synchronization technique are employed to meet the needs of high speed photography. Space and time resolution were brought up to 0.1mm and 1s, respectively. Experiments were performed in hypersonic shock tunnel with Mach 5.0 and 6.0. Regular reflection and Mach reflection generated by interaction of oblique shocks, and type IV shock interaction generated by oblique shock and bow shock were detected. Clear color schlieren images were obtained at the 3 conditions. The complex structures of the 3 kinds of shock interactions are disclosed, which proves that the color schlieren system was efficient and reliable. And it also supplies an alternate method in the diagnostics of hypersonic flow field.