مجله مهندسی مکانیک

مجله مهندسی مکانیک

بهینه سازی هندسه استنت با سلول بسته درون یک رگ و تحلیل عددی تنش برشی غیر نیوتنی

نوع مقاله : علمی پژوهشی

نویسندگان
1 استادیار، دانشکده مهندسی مکانیک، دانشگاه سمنان، سمنان
2 کارشناسی، دانشکده مهندسی مکانیک، دانشگاه سمنان، سمنان
چکیده
در مطالعه حاضر تاثیر همزمان تغییر زاویه شاخه های استنت و مساحت بسته داخل هر سلول استنت بر جریان درون یک رگ به صورت عددی مورد بررسی قرار گرفته است. برای حل معادلات جریان از روش حجم محدود استفاده شده است. جریان درون رگ آرام است و مش مورد استفاده، چهار وجهی بدون سازمان، بدون لایه مرزی برای تمام استنت‌ ها است. فرض بر این است که خون با سرعت ثابت، جریان توسعه یافته و استنت صلب است. 22 نوع استنت مورد مطالعه قرار گرفته است. با توجه به نتایج، هر چقدر مساحت سلول استنت بیشتر باشد تنش برشی دیواره رگ بیشتر می‌ شود و هر چقدر زاویه شاخه ‌های استنت نسبت به جریان همسوتر باشد یا عمود بر جهت جریان باشد تنش برشی دیواره کمتر می‌ شود.
کلیدواژه‌ها

موضوعات


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دوره 33، شماره 3 - شماره پیاپی 156
مرداد و شهریور 1403
صفحه 50-57

  • تاریخ دریافت 23 مهر 1402
  • تاریخ بازنگری 26 اسفند 1402
  • تاریخ پذیرش 22 خرداد 1403