CAJ | 학술논문

进行了发动机中空气吸气和压缩过程的二维计算机模拟.使用二维正交曲线坐标系以考虑燃烧室的复杂形状.采用SIMPLEC算法求解流体力学模型方程.论文中分别采用4个湍流模型:标准的k-ε模型,Realizablek-ε模型,雷诺应力模型和亚网格尺度模型.论文中对模拟计算的预测值进行了分析.计算出的流场与实验测定值进行了对比.通过模拟计算得到了内燃机中重要的流动图象.
진행료발동궤중공기흡기화압축과정적이유계산궤모의.사용이유정교곡선좌표계이고필연소실적복잡형상.채용SIMPLEC산법구해류체역학모형방정.논문중분별채용4개단류모형:표준적k-ε모형,Realizablek-ε모형,뢰낙응력모형화아망격척도모형.논문중대모의계산적예측치진행료분석.계산출적류장여실험측정치진행료대비.통과모의계산득도료내연궤중중요적류동도상.
Two-dimensional (2-D) modeling and simulation were conducted for air intake and compression in an internal combustion (I.C.) engine. The 2-D general orthogonal coordinate was employed to account for the complex geometry of the I.C. engine. The governing equations were solved using the SIMPLEC algorithm. Four turbulence models, the standard κ-ε model, Realizable k-ε model, the Reynolds stress model and the Subgrid-scale model were used, and the predicted results were analyzed. The calculated flow fields were compared with the experimental measurements. Some interesting flow patterns in the engine were predicted using the present model.