서지주요정보
Navier-stokes 해법을 이용한 차등회전 발사체의 magnus 효과 연구 = Navier-stokes computation of magnus effects on a projectile having differentially spinning sections
서명 / 저자 Navier-stokes 해법을 이용한 차등회전 발사체의 magnus 효과 연구 = Navier-stokes computation of magnus effects on a projectile having differentially spinning sections / 안성호.
발행사항 [대전 : 한국과학기술원, 2003].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014317

소장위치/청구기호

학술문화관(문화관) 보존서고

DAE 03001

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

Magnus effects on a differentially spinning projectile have been numerically analyzed using the three-dimensional thin-layer Navier-Stokes equations for Mach numbers ranging from 2.0 to 4.0 and angles of attack of α = 4° and 7°. The projectile model is a 6-caliber long, secant-ogive-cylinder-boattail (SOCBT) shape. Differential Magnus effects have been investigated for the spin cases where one of the projectile sections does not spin while the other two are spinning at the same rate. Three spin cases have consequently been considered. The three-dimensional supersonic flow around the SOCBT projectile has been computed using an implicit, approximately-factored, partially flux-split algorithm. The accuracy of the present Navier-Stokes code has been validated by comparing the computational results with experimental data for the single-spinning SOCBT projectile at supersonic speeds. Good agreements could be obtained at small and moderate angles of attack. Computed results have shown that there is indeed noticeable change in Magnus forces and moments due to the differential spinning. Changes of surface pressure, circumferential and longitudinal wall shear stresses by the differential spin, relative to the single-spinning case, are presented in the circumferential direction on three sampled sectional locations. Magnus forces generated by the surface pressure and wall shear stresses are plotted in the longitudinal direction for the three different spin cases. Computations have also shown that the position of the Magnus center of pressure varies noticeably due to the differential spinning. Numerical results indicate that, contrary to Magnus effects, the normal forces and pitching moments remain nearly independent of the spin cases considered in this study.

서지기타정보

서지기타정보
청구기호 {DAE 03001
형태사항 xi, 126 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Sung-Ho Ahn
지도교수의 한글표기 : 장근식
지도교수의 영문표기 : Keun-Shik Chang
학위논문 학위논문(박사) - 한국과학기술원 : 항공우주공학전공,
서지주기 참고문헌 : p. 121-126
주제 차등회전 발사체
Magnus 효과
박층 Navier-Stokes 방정식
Differentially Spinning Projectile
Magnus Effect
Thin-Layer Navier-Stokes Equations
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