کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1721863 1014700 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational study of different venturi and orifice type hydrodynamic cavitating devices
ترجمه فارسی عنوان
مطالعه محاسباتی دستگاه های مختلف حفره ای هیدرودینامیکی نوع ونتوری و سوراخ
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی

This paper reports optimization of various geometrical parameters of two types of hydrodynamic cavitation reactors (HC) such as venturi type and orifice type. Mostly orifice and venturi nozzles are used as HC reactor, a simple valve can also be used to cause cavitation which depends on geometry and area of opening. Different operating and geometrical parameters such as divergence angle, throat height/diameter to length ratio, number of holes and inlet pressure to the cavitating device were selected to study the inception, growth and dynamics of cavities. In this work, a comprehensive computational fluid dynamics simulation is performed to numerically investigate the 3-D flow behaviors within HC reactors using cavitational model with standard k - ɛ Turbulence model. The study of different geometries of venturi type HC reactor (like slit, circular and elliptical) shows that 1:1 of the ratio of throat height/diameter to length and 6.5° of divergence angle is an optimum geometry for best cavitational activity. In case of orifice, 1:3 of the ratio of diameter to length is best for cavitation and an increase in the total flow area increases the cavitational yield.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrodynamics, Ser. B - Volume 28, Issue 2, April 2016, Pages 293–305
نویسندگان
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