کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8051089 1519371 2018 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical and experimental study of oscillatory behavior of liquid surface agitated by high-speed gas jet
ترجمه فارسی عنوان
بررسی عددی و آزمایشی رفتار نوسانی سطح مایع با جت گاز با سرعت بالا
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی
This study examines high-speed air jet impingement on water surface in the penetration mode using CFD simulation and experimental observation. An axisymmetric approach was taken along with the volume of fluid (VOF) method and the k−ω SST turbulence model for simulations. Moreover, a test rig was designed and fabricated to diagnose the phenomenon by tracking the interface motion using a high-speed camera in conjunction with an image processing procedure, and to evaluate the validity of the numerical simulations. Important aspects of the oscillatory behavior of the interface, cavity depth oscillation and rising ligaments and sheets, are addressed in detail. The simulation results offer a very close prediction of the peak frequencies of the cavity oscillation, and the number of ejected liquid sheets and ligaments despite some discrepancies in the range of the cavity motion and the height of ligament and sheets. Induced waves on the interface, and bubbles escaping from the cavity, which are the main source of instability of this two-phase system, are reproduced successfully.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 62, October 2018, Pages 510-525
نویسندگان
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