مقایسه مدل های دو سیالی یک بعدی در پیش بینی متغیر های جریانهای دو فازی گاز-مایع در لوله عمودی و تعیین مدل مناسب

نوع مقاله : مقاله علمی پژوهشی

نویسندگان

گروه مهندسی مکانیک، دانشگاه آزاد اسلامی واحد ساری، ساری، ایران

چکیده

با استفاده از مدل دوسیالی و روش عددی تسخیر شاک پایستار، یک روش برای شبیه سازی جریانهای دو فازی ارائه شد. مزیت این روش نسبت به روشهای متداول، پیشبینی مکان فصل مشترک بدون مدلسازی است. مدل تکفشار به دلیل وسیعتر بودن محدوده خوشرفتاری نسبت به مدل مستقل از فشار و پخش عددی کمتر نسبت به مدل دوفشار، مدل قدرتمندتری است. در مدل دوفشار1، با انتخاب 0، 0000001/0، 000001/0، 00001/0، 0001/0، و 001/0 برای ضریب تعدیل فشار، نشان داده شده با بزرگ شدن این پارامتر، نتایج مدلهای دوفشار1 و 2، به هم نزدیک میشوند.

کلیدواژه‌ها

موضوعات


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