کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1718853 | 1013873 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical study of the start-up process in an optimized rocket nozzle
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work is to analyze the start-up process of the subscale optimized J2-S rocket nozzle by means of axisymmetric time-accurate Reynolds Averaged Navier–Stokes simulations. Specifically, the phenomena of the FSS → RSS transition (from fully separated to reattached flow), onset of backflow on the nozzle axis and opening of the separation bubble are investigated. Numerical predictions show a remarkable good agreement with experimental data. In particular, the FSS → RSS transition is correctly captured by axisymmetric modelling. The analysis of the flowfield across the shock pattern leads to a simple criterion for the FSS → RSS transition to occur. Furthermore, a mechanism and criterion for the appearance of backflow on the axis is suggested
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aerospace Science and Technology - Volume 12, Issue 6, September 2008, Pages 485-489
Journal: Aerospace Science and Technology - Volume 12, Issue 6, September 2008, Pages 485-489