CAJ | 학술논문

为进一步扩大无网格方法在复杂化学反应流场模拟中的计算规模，基于 MPI(Message Passing Interface)并行环境，发展了耦合有限速率反应模型的并行无网格算法，其流体动力学采用包含反应源项的二维轴对称 Euler方程建模，对流通量采用多组分 HLLC(Harten-Lax-van Leer-contact)格式计算，时间项运用4阶 Runge-Kutta 法显式推进。分别采用2~8个进程对激波诱导燃烧流场以及高速运动弹丸诱导斜爆轰流场进行了数值模拟，其结果同实验以及网格方法获得的结果吻合较好，并且具有较理想的并行效率，验证了其在复杂化学反应流大规模计算中应用的正确性和有效性。
위진일보확대무망격방법재복잡화학반응류장모의중적계산규모，기우 MPI(Message Passing Interface)병행배경，발전료우합유한속솔반응모형적병행무망격산법，기류체동역학채용포함반응원항적이유축대칭 Euler방정건모，대류통량채용다조분 HLLC(Harten-Lax-van Leer-contact)격식계산，시간항운용4계 Runge-Kutta 법현식추진。분별채용2~8개진정대격파유도연소류장이급고속운동탄환유도사폭굉류장진행료수치모의，기결과동실험이급망격방법획득적결과문합교호，병차구유교이상적병행효솔，험증료기재복잡화학반응류대규모계산중응용적정학성화유효성。
To enlarge the computation scale of numerical simulation of complex reactive flows,the parallel gridless method coupled with finite rate chemical model,was studied based on Message Passing Interface.The fluid dynamics process was described by Euler equation with chemical source in 2-D axisymmetric coordinate,and the numerical method was based on least-square gridless method.The inviscid flux was calculated by multi-component HLLC (Harten-Lax-van Leer-Contact)scheme,and the multistage Runge-Kutta algorithm was used to advance the equations in time.The flows of shock-induced combustion and the supersonic proj ectile-induced oblique detonation were simulated using 2-8 processes respectively.The results show well agreement with the shadowgraph and other numerical results,and the parallel efficiency is accredited.It’s effective to employ this parallel gridless method in the simulation of supersonic reactive flows in engineering applications.