題目：基于動(dòng)網(wǎng)格的HMX/GAP/Al固體推進(jìn)劑的動(dòng)力學(xué)建模與仿真
摘要：本文從諸如燃速，表面溫度，氣相溫度，物質(zhì)的摩爾分?jǐn)?shù)和比沖等方面研究了不同含量（0-20 wt％）的納米鋁顆粒對(duì)HMX/GAP/Al固體推進(jìn)劑的影響。利用詳細(xì)動(dòng)力學(xué)機(jī)理建立了固相、凝相和氣相的數(shù)學(xué)模型，該模型包括507個(gè)氣相反應(yīng)和HMX/GAP/Al燃燒的4個(gè)凝相反應(yīng)（包含氣相鋁的相變和反應(yīng)）。基于該模型，利用gPROMS軟件包通過(guò)動(dòng)網(wǎng)格方法在不同推進(jìn)劑成分和工作壓力下進(jìn)行了動(dòng)態(tài)模擬，仿真結(jié)果與HMX/Al推進(jìn)劑燃燒的實(shí)驗(yàn)數(shù)據(jù)非常吻合。之后，本文對(duì)HMX/GAP/Al推進(jìn)劑的燃燒進(jìn)行了預(yù)測(cè)，在100atm的工作壓力下，20%wt鋁含量的推進(jìn)劑的氣相溫度為3061K，15%wt含鋁量的推進(jìn)劑比沖為258.53s。此外，結(jié)果表明隨著壓力的增大推進(jìn)劑的燃速和比沖也增大。根據(jù)本文的結(jié)果，添加含量范圍為15–20 wt％的鋁顆粒可顯著改善推進(jìn)劑的燃燒性能。
要點(diǎn)：
1.總結(jié)了關(guān)于HMX/GAP/Al的反應(yīng)機(jī)理和物性參數(shù)
2.氣/凝/固相的界面捕捉
Title: Dynamic modeling and simulation of the combustion of aluminized solid propellant with HMX and GAP using moving boundary approach
Abstract: This research describes the influence of nano-sized aluminum with varying contents (0–20 wt%) on the combustion behaviors of HMX/GAP/Al in aspects such as burning rate, surface temperature, gas phase temperature, mole fraction of species, and specific impulse. A rigorous mathematical model is developed for three phases (solid phase, condensed phase, and gas phase) with detailed kinetics. This model consists of 507 gas phase reactions and 4 condensed phase reactions of HMX/GAP/Al combustion. The model also emphasizes the phase transitions and reactions of aluminum in the gas phase. Based on this model, dynamic simulation is carried out at various propellant compositions and operating pressures by means of the moving boundary approach using gPROMS software package. The simulation results are in close agreement with the experimental data at slight marginal errors for HMX/Al combustion, predicting the combustion behaviors for the HMX/GAP/Al system. Accordingly, the model predicts the gas phase temperature of 3061 K for the 20 wt% Al and the specific impulse of 258.53 s for the 15 wt% Al of HMX/GAP/Al propellant under an operating pressure of 100 atm. The increase in burning rate and specific impulse by increasing the pressure is also indicated. According to this study, the addition of aluminum particles with a content range of 15–20 wt% considerably improves combustion behaviors. By dynamic modeling and simulation, a detailed framework for studying the multi-phase combustion of aluminized solid propellant is introduced.
原文鏈接, CNF, IF 4.12
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