کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8055549 1519907 2018 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical analysis and design optimization of supersonic after-burning with strut fuel injectors for scramjet engines
ترجمه فارسی عنوان
تجزیه و تحلیل عددی و بهینه سازی طراحی پس از سوزش با دستگاه با موتورهای سقفی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
Scramjets are a class of hypersonic airbreathing engine that offer promise for economical, reliable and high-speed access-to-space and atmospheric transport. The expanding flow in the scramjet nozzle comprises of unburned hydrogen. An after-burning scheme can be used to effectively utilize the remaining hydrogen by supplying additional oxygen into the nozzle, aiming to augment the thrust. This paper presents the results of a single-objective design optimization for a strut fuel injection scheme considering four design variables with the objective of maximizing thrust augmentation. Thrust is found to be augmented significantly owing to a combination of contributions from aerodynamic and combustion effects. Further understanding and physical insights have been gained by performing variance-based global sensitivity analysis, scrutinizing the nozzle flowfields, analyzing the distributions and contributions of the forces acting on the nozzle wall, and examining the combustion efficiency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 147, June 2018, Pages 281-296
نویسندگان
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