CAJ | 학술논문

利用双流体模型对固体火箭发动机喷管内气固两相流进行计算，研究了两相流中颗粒相与气相的相互作用，分析了颗粒粒径及颗粒质量分数对两相流中气相在喷管中膨胀的影响。结果表明，颗粒粒径造成两相流损失的大小是颗粒比表面积、气相湍流动能及颗粒在喷管内的滞留时间等因素共同作用的结果，两相流损失随着颗粒粒径的增大先增大、后减小，同时随着颗粒质量分数增大而增大；JPL喷管中粒径为2μm的颗粒造成的两相流损失最大，此粒径下，当颗粒质量分数从10％增大到40％时，两相流损失从10％增大到26％。
이용쌍류체모형대고체화전발동궤분관내기고량상류진행계산，연구료량상류중과립상여기상적상호작용，분석료과립립경급과립질량분수대량상류중기상재분관중팽창적영향。결과표명，과립립경조성량상류손실적대소시과립비표면적、기상단류동능급과립재분관내적체류시간등인소공동작용적결과，량상류손실수착과립립경적증대선증대、후감소，동시수착과립질량분수증대이증대；JPL분관중립경위2μm적과립조성적량상류손실최대，차립경하，당과립질량분수종10％증대도40％시，량상류손실종10％증대도26％。
A two?fluid model was applied to simulate two?phase flow in two SRM nozzles. The interactional mechanism of gas phase and particle phase was studied. The effect on gas phase expansion in nozzle was studied under different particle sizes and dif?ferent particle mass percentages. The results indicate that the loss of two phase flow caused by particle sizes is the combined product of the specific surface area of particles, turbulent kinetic energy of gas phase and particle residence time in the nozzle. The loss of two phase flow increases first and then decreases with the increase of particle sizes, while increases all along with the increase of particle mass percentages;In JPL nozzle, 2μm?diameter particles caused the most loss of two phases, increasing from 10% to 26%when the particle mass percentage ranges from 10% to 40%.