کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7053756 1458012 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical simulation of bubble collapse between two parallel walls and saturated film boiling on a sphere
ترجمه فارسی عنوان
شبیه سازی عددی سقوط حباب بین دو دیواره موازی و فیلم اشباع شده در یک کره
کلمات کلیدی
چند فاز جریان دارد جریان رابط فشرده، سقوط حباب، تغییر فاز، جوش فیلم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The present study aims at validating a computer simulation code for compressible interface flows with and without mass transfers. The numerical method was based on a dual-time fully compressible multiphase homogeneous mixture flow model. The interfaces with a large jump in density, pressure, velocity, and temperature were captured using a compressive high-resolution interface-capturing scheme. Lee's boiling model was adopted for implementing the mass and energy transfers via interfaces. The bubble collapse between two parallel walls was first examined. The bubble profile during the collapse process was predicted and compared with experimental images. The numerical results showed good agreement. To evaluate the present model for multiphase flows, including the effects of heat and mass transfers, computations were performed for saturated film boiling on a sphere at atmospheric pressure. The evolution of the wavy liquid-vapor interface around the sphere during the film boiling process was observed. The time-averaged heat fluxes obtained from the numerical simulation were compared with those predicted from numerical data and analytical correlations. The effects of the superheated wall on heat fluxes were also investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 127, Part A, December 2018, Pages 116-125
نویسندگان
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