[방적] Effect of Nozzle Geometry on Hydroentangling Water Jets: Experimental Observations 출판일 : 2004.02.01 저자 : A. Begenir, H. Vahedi Tafreshi, B. Pourdeyhimi 서지사항 : Textile Research Journal, Volume 74, No 2(2004), 178-184페이지 등록일 : 2012.04.19 I 조회수 : 153 작성자 : admin |
This paper reports on the role of nozzle geometry on the characteristics of hydroen tangling
water jets, specifically the behavior of three different conventional nozzle geometries under
pressures below 3500 psi. Profiles of the water jets are digitized with a Nikon Dlx digital
camera from which we extract the water-jet breakup lengths and spray angles under
different operating conditions. Our preliminary data indicate that the cone-up nozzle
produces water jets with considerably shorter intact lengths and slightly larger spray angles
and a higher coefficient of discharge compared to the two other geometries considered. We
attribute this distinct behavior to friction-induced and cavitation-induced turbulence inside
the cone-up nozzles; a constricted water jet is formed by cone-down or cylindrical
nozzles. Our results are in excellent agreement with previous experimental and
computational data.
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