서지주요정보
노즐 형태가 난류 이중 제트에 미치는 영향 = The effects of nozzle geometry on turbulent dual jet flow
서명 / 저자 노즐 형태가 난류 이중 제트에 미치는 영향 = The effects of nozzle geometry on turbulent dual jet flow / 임태준.
저자명 임태준 ; Lim, Tai-Jun
발행사항 [서울 : 한국과학기술원, 1986].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

4103615

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 8624

SMS전송

도서상태

이용가능

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반납예정일

초록정보

The effects of nozzle angle and distance between the two nozzles on turbulent dual jet flow pattern were experimentally investigated. This experimental results can be applied to the polymer melt spinning process in which air is the jet medium. In this study the measurement of characteristics of the dual jet flow was carried out within the limits of x/a ≤ 40 and the angles between the center line of nozzle exit and jet center line were 30℃, 45℃ and 60℃ respectively. Mean velocity, turbulent velocity components and Reynolds shear stress were measured by a linearized two-channel constant temperature hot wire anemometer. Turbulent intensity distributions, increasing rates of the jet width and momentum flux distributions were calculated with these measured experimental data. Sub-atmospheric region, which is one of the most remarkable characteristics of dual jet flow, was ascertained by these measurements. The characteristics of dual jet flow were much influenced by the changes of nozzle angle or distance between two nozzles. As the nozzle angle increased, the lateral mean velocity distributions more deviated from the Goertler's theoretical solution. When nozzle angle was 30℃ or 45℃, the width of combined jet spread linearly in the downstream direction, but in case of nozzle angle was 60℃, there was a change of increasing rate of jet width. Mean momentum fluxes in the downstream direction are not conserved, and when nozzle angle was 60℃, mean momentum fluxes were small as compared with those of 30℃ and 45℃.

서지기타정보

서지기타정보
청구기호 {MCE 8624
형태사항 [vi], 82 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Tai-Jun Lim
지도교수의 한글표기 : 정인재
공동교수의 한글표기 : 우성일
지도교수의 영문표기 : In-Jae Chung
공동교수의 영문표기 : Seong-Ihl Woo
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 69-71
주제 Nozzle.
유체 역학. --과학기술용어시소러스
노즐. --과학기술용어시소러스
Hydrodynamics.
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