نشریه مهندسی مکانیک ایران

نشریه مهندسی مکانیک ایران

طراحی و شبیه سازی بخش توربین در یک موتور توربوفن سنگین با استفاده از روش های عددی

نوع مقاله : مقاله علمی پژوهشی

نویسندگان
1 دانشیار، دانشگاه صنعتی مالک اشتر تهران، مجتمع دانشگاهی هوافضا، تهران، ایران
2 دانشگاه صنعتی مالک اشتر تهران، مجتمع دانشگاهی هوافضا، تهران، ایران
3 کارشناسی ارشد، دانشگاه صنعتی مالک اشتر تهران، مجتمع دانشگاهی هوافضا، تهران، ایران
چکیده
موتورهای توربوفن سنگین با مقادیر تراست بالا، از جایگاه ویژه ای در بین موتورهای هوایی برخوردار می باشند. در میان اجزای مختلف موتورهای توربین گاز، بخش توربین، به دلیل دما و دور کاری بالای اجزای آن، از حساسیت و اهمیت بالایی برخوردار است. در مطالعه حاضر، ابتدا بر اساس نتایج حاصل از طراحی سیکل، طراحی مفهومی توربین موتور توربوفن مدنظر با استفاده از نرم افزارها و الگوریتم های تعریف شده، انجام شده است. در ادامه شبیه سازی عددی جریان بر روی پره های طراحی شده صورت گرفته و عملکرد توربین طراحی شده بررسی شده است. نتایج طراحی مفهومی، به ویژه هندسه پره های توربین، تطابق خوبی با اطلاعات در دسترس موتور اصلی داشتند. نسبت فشار توربین های طراحی شده در بخش طراحی مفهومی و شبیه سازی عددی تنها 7/0 و 5/0درصد اختلاف داشتند. با این حال بازده توربین فشار بالا، به دلیل در نظر نگرفتن خنک کاری در شبیه سازی عددی، بین طراحی مفهومی و شبیه سازی عددی، در حدود 6/5 درصد اختلاف داشتند.
کلیدواژه‌ها

موضوعات


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