ارائه رابطه‌ای برای تعیین ضریب انتقال جرم بین فازی در جریان تیلور بر مبنای شبیه سازی CFD

نوع مقاله : مقاله پژوهشی

نویسنده

دانشگاه لرستان

چکیده

در تحقیق حاضر بر مبنای نتایج حاصل از شبیه سازی CFDرابطه ای برای ضریب انتقال جرم بین فازی در جریان تیلور ارائه شده است. جهت شبیه سازی هیدرودینامیک رژیم تیلور در یک سلول واحد از این جریان از روش VOF استفاده شده است. در ادامه انتقال جرم از حباب تیلور به لخته مایع شبیه سازی شده است. در شبیه­سازی­های انجام شده، حباب تیلور با استفاده از یک روش تکراری در یک هندسه متقارن محوری ساکن شده و جریان مایع از روی آن عبور داده شده است. در رابطه ارائه شده، تأثیر پارامترهای حاکم بر جریان تیلور نظیر عدد موئینه، سرعت حباب گاز، کسر حجمی، طول سلول واحد و قطر لوله موئین بر انتقال جرم بین فازی دیده شده است. مزیت اصلی این رابطه کارایی آن در تخمین میزان انتقال جرم بین فازی در محدوده وسیعی از اعداد موئینه است. همچنین رابطه ارائه شده، تأثیر تغییر شکل حباب بر انتقال جرم بین فازی را در نظر می­گیرد.

کلیدواژه‌ها

موضوعات


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