کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8057843 | 1520058 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of micro air jets on mixing augmentation of fuel in cavity flameholder at supersonic flow
ترجمه فارسی عنوان
تأثیر جت های میکرو هوا در مخلوط کردن افزایش سوخت در حفره ای در جریان هوای صاف
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
چکیده انگلیسی
In this study, numerical simulations are performed to study the effect of micro air jets on the mixing of fuel in the cavity flameholder of the scramjet. This research mainly focused the optimum position of fuel (C2H4) injection on the mixing rate inside the cavity. In order to simulate the cavity flameholder with micro air/fuel jets, a three-dimensional model is chosen and computational fluid dynamic approach is used for the simulations. The effect of significant parameters is studied by using the Reynolds-averaged Navier-Stokes equations with Menter's Shear Stress Transport (SST) turbulence model. In this work, the transient study is also performed to reveal the flow feature and mass distribution inside the cavity in the supersonic free stream (M=2.2). Results show that the injection of the fuel in the middle of the vertical wall significantly enhances the mixing of fuel in the cavity. The obtained results reveal that the injection of micro air jets distributes the fuel uniformly inside the cavity. Therefore, an enhanced mixing zone occurs in the downstream of the injection slots which lead to flame-holding.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aerospace Science and Technology - Volume 76, May 2018, Pages 187-193
Journal: Aerospace Science and Technology - Volume 76, May 2018, Pages 187-193
نویسندگان
Keivan Fallah, M. Barzegar Gerdroodbary, Atena Ghaderi, Javad Alinejad,