بررسی عددی اثر انبساط ناگهانی محفظه احتراق رمجت سوخت جامد روی نرخ پسروی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی شیمی- دانشکده فنی و مهندسی -دانشگاه جامع امام حسین (ع)- تهران - ایران

2 گروه مهندسی شیمی - دانشکده فنی و مهندسی - دانشگاه جامع امام حسین (ع)

10.22034/jfnc.2024.417460.1359

چکیده

در این پژوهش مدل‌سازی و شبیه‌سازی عددی تأثیر نسبت انبساط ناگهانی (نسبت قطر پورت به قطر ورودی) محفظه احتراق رم‌جت سوخت جامد مبتنی بر پلی‌اتیلن با چگالی بالا در واکنش جریان آشفته بر روی نرخ پسروی صورت می‌گیرد. در مطالعه حاضر تأثیر انبساط ناگهانی محفظه احتراق رم‌جت سوخت جامد در سه نمونه مختلف با قطر پورت مختلف و قطر ورودی ثابت با نسبت‌های 1/75، 1/875و 2/125 بر روی پارامترهای دما و نرخ پسروی بررسی شد. نتایج شبیه‌سازی نشان داد افزایش نسبت قطر پورت به قطر ورودی موجب کاهش دما می‌شود. بیشترین دما در نمونه اصلی با نسبت قطر پورت به قطر ورودی برابر با 75/1 حاصل شد. همچنین نتایج نشان داد که افزایش انبساط ناگهانی موجب کاهش نرخ پسروی سوخت می‌شود که این امر موجب کاهش عملکرد رمجت می‌شود.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Numerical investigation of the effect of sudden expansion of the solid fuel ramjet combustion chamber on the regression rate

نویسندگان [English]

  • seyed Naser Hosseini Tamrabad 1
  • Ali Akbar Jamali 2
1 Department of Engineering, Imam Hussein University, Tehran, Iran
2 Chemical Engineering Department - Faculty of Engineering - Imam Hossein University
چکیده [English]

I
In this research, modeling and numerical simulation of the effect of sudden expansion ratio (ratio of port diameter to inlet diameter) of high-density polyethylene-based solid fuel ramjet combustion chamber in the reactive turbulent flow on the regression rate are presented. The effect of sudden expansion of solid fuel ramjet combustion chamber in three different samples with different port diameters and fixed inlet diameter with ratios of 1.75, 1.875 and 2.125 is investigated on the parameters of temperature and regression rate. The simulation results show that increasing the ratio of port diameter to inlet diameter decreases the temperature. The highest temperature was obtained in the original sample with the ratio of port diameter to inlet diameter equal to 1.75.  Also, the results show that the sudden increase in expansion causes a decrease in the fuel regression rate, which causes a decrease in ramjet performance.

کلیدواژه‌ها [English]

  • Sudden expansion
  • Regression rate
  • Solid fuel ramjet
  • Simulation and Modeling
  • High density polyethylene
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