روش مرز غوطه‌ور– شبکۀ بولتزمن برای شبیه‌سازی حرکت ذره در سیالات غیرنیوتنی

علوم کاربردی و محاسباتی در مکانیک

مقاله 7، دوره 28، شماره 1 - شماره پیاپی 15، اسفند 1395، صفحه 75-92   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.22067/fum-mech.v28i1.46922

نویسندگان

امین امیری دلوئی^{* 1}؛ محمد حسن کیهانی²؛ محسن نظری²

¹دانشگاه بجنورد

²دانشگاه شاهرود

چکیده

در مطالعۀ حاضر روش ترکیبی مرزغوطه‌ور- شبکۀ بولتزمن غیرنیوتنی برای شبیه‌سازی نیروهای وارد بر ذره و هم‌چنین محاسبۀ سرعت حرکت ذره در مجاورت سیالات غیرنیوتنی مختلف، توسعه داده شده است. در این تحقیق، اثرات نیروی اضافی ناشی از وجود جرم شتابدار نیز در معادلات حرکت غیرنیوتنی ذره لحاظ شده‌اند. دو مسئلۀ کاربردی شامل جریان سیال غیرنیوتنی توانی از روی سیلندر ثابت با سطح مقطع مربعی و سقوط یک ذرۀ مربعی در سیالات غیرنیوتنی با خواص مختلف رقیق‌برشی و ضخیم‌برشی بررسی شده است. نتایج نشان می‌دهند که نیروی وارد بر سیلندر در حالت ثابت و سرعت حد ذره در حال سقوط با افزایش شاخص رفتار غیرنیوتنی توانی به‌ترتیب افزایش و کاهش قابل ملاحظه‌ای را تجربه خواهند نمود.

کلیدواژه‌ها

روش مرز غوطه‌ور؛ روش شبکۀ بولتزمن؛ شبیه‌سازی عددی مستقیم؛ سیال غیرنیوتنی توانی؛ سطح مقطع مربعی

سایر فایل های مرتبط با مقاله

6-keyhani-EA.pdf

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