CAJ | 학술논문

研究了高速列车在明线交会时产生的瞬态压力波以及气动作用力将会对列车的运行安全产生不利影响.采用三维、非定常、可压缩流体控制方程和双方程湍流模型的数值方法,基于重叠网格法对时速300km高速列车明线交会的压力波进行研究.研究结果表明：重叠网格法能够解决高速列车明线交会的压力波变化问题,主区域网格与从属区域的动网格数据传输准确；高速列车相距70m,0.42s时列车进入交会,此时出现车头鼻尖处交会压力波“头波”,车头鼻尖处所受压力达到最大；0.95s列车车头行驶到通过列车的车尾处,两车纵向重合,出现“尾波”.
연구료고속열차재명선교회시산생적순태압력파이급기동작용력장회대열차적운행안전산생불리영향.채용삼유、비정상、가압축류체공제방정화쌍방정단류모형적수치방법,기우중첩망격법대시속300km고속열차명선교회적압력파진행연구.연구결과표명：중첩망격법능구해결고속열차명선교회적압력파변화문제,주구역망격여종속구역적동망격수거전수준학；고속열차상거70m,0.42s시열차진입교회,차시출현차두비첨처교회압력파“두파”,차두비첨처소수압력체도최대；0.95s열차차두행사도통과열차적차미처,량차종향중합,출현“미파”.
The transient pressure waves and pneumatic force of high-speed trains passing each other in the open air will adversely affect the safety of train operation. Using the numerical method of three-dimensional, unsteady, compressible fluid control equation and two-equation turbulence model unsteady, compressible fluid control equation and two-equation turbulence model, the pressure changed for 300km/h high-speed rains passing each other in the open air based on overset mesh. The results show that the method of overset mesh can solve the problem of the pressure wave changed for the high-speed trains passing each other, and the grid transmission accurate between master zone and salve zone. There are 70m away from the high-speed trains, when the high-speed trains start rendezvous in 0.42s, the pressure wave “head waves” of front nose is appearing, the pressure of the front nose is maximum. The front of the train traveling through the rear of the train in 0.95s, two cars vertical coincidence, making a “trail wave”.