کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7136804 1461880 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pressure on the conical surface of needle valves
ترجمه فارسی عنوان
فشار روی سطح مخروطی سوپاپ سوزن
کلمات کلیدی
سوپاپ سوزنی نازل، جداسازی جریان، توزیع فشار،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Author investigated needle valves in their basic geometry, with conical needle body inserted into the entrance of a sharp-edged cylindrical exit channel. Investigations of two alternative geometries having 90 and 60° included angles were made with scaled-up laboratory model provided with large number of pressure tap holes on the surfaces - together with numerical flowfield computations. Effect of Reynolds number was found generally weak, but variations of the needle lift caused significant changes in the character of the flowfield, with typical three local pressure extremes. A newly observed phenomenon is flow separation from the surface of the cone near its tip.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 220, 1 December 2014, Pages 1-12
نویسندگان
,