Abstract
In this research, the 3D grain burnback with quasi-one-dimensional internal ballistic in a solid rocket motor is simulated using the Level set theory and the utilization of Sections method, while achieving high accuracy in the simulation of green's post-back analysis time can also be significantly reduced. By using Section method, 3D grains are divided to many 2D grain, then 2D Level set is utilized to analyse grain burnback. Finally, the burning port of 3D grains are calculated by means of Interpolation. Also, to predict the internal pressure of the motor and the burning rate, a numerical code is written and coupled with grain burnback programme.
Highlights
By using Section method, 3D grains are divided to many 2D grains, 2D Level set is utilized to analyze grain burnback
The burning port of 3D grains are calculated by means of Interpolation
A numerical code is written and coupled with grain burnback programme to predict the internal pressure of the motor and the burning rate
Summary
براي گستردهسازي مرز موردنظر ابتدا بايد با استفاده از ميانيابي تابع φرابين نقاط شبكه حل مشخص نماييم. پس از تبيين معادله پسروي، مشخصات بالستيكي گرين همچنين سرعت گسترش سطح سوزش (نرخ سوزش) با در نظر گرفتن سوزش فرسايشي از مدل سادرهلم با محاسبه عدد ماخ در راستاي طول گرين براي هركدام از سطح مقطعهاي مورد نظر بهطور جداگانه از بالستيك داخلي شبه يكبعدي بهدست ميآيد.
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