지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
The geometry of headboxes is of great importance in obtaining good formation, even basis weight profile and fiber orientation. Therefore, many attentions have been made to examine the influence of the geometry of headboxes on the flow behavior. In this study, to evaluate flow behavior in headboxes, three types of turbulence generators were examined using pilot headbox. Velocity profiles in MD and CD were measured using a pressure monitoring system and flow in headboxes was visualized by dye injection method. CD velocity profiles at three different locations inside the slice of Type A headbox showed that the velocity increased downstream to slice exit and had a pattern with four humps due to the persisting wall effect of step diffusors. Results from the evaluation of normalized velocity profile and flow visualization showed that L-shaped Type C head-box caused a large pressure drop but it lacked in flow stabilizing ability.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgment
Literature Cited
참고문헌 (11)
참고문헌 신청
[학술지(정기간행물)] - / 1977 / The step diffusor - a hydraulic element in headboxes 60 (4) : 133 ~ 137
[학술지(정기간행물)] - / / Headbox is designed to improve formation 27 8 : 1986 ~
[학술지(정기간행물)] - / 1988 / The influence of headbox flow conditions on paper properties and their constancy : 72 93 ~ 98
[학술지(정기간행물)] - / 1968 / Simultaneous convergence - a new concept of headbox design 51 (10) : 425 ~ 432
[학술지(정기간행물)] - / 1975 / A new hydraulic principle for headboxes 58 (11) : 72 ~ 77
[학술지(정기간행물)] - / / Headbox is designed to improve formation 27 8 : 1986 ~
[학술지(정기간행물)] - / 1988 / The influence of headbox flow conditions on paper properties and their constancy : 72 93 ~ 98
[학술지(정기간행물)] - / 1968 / Simultaneous convergence - a new concept of headbox design 51 (10) : 425 ~ 432
[학술지(정기간행물)] - / 1975 / A new hydraulic principle for headboxes 58 (11) : 72 ~ 77
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UCI(KEPA) : I410-ECN-0101-2009-586-014444286