摘要
对400 km/h的16编组列车在不同净空面积(90,95,100,105和110 m^(2))隧道交会气动载荷进行数值研究,并结合压力舒适性标准对隧道净空面积提出建议。采用RNG k-ε湍流模型和滑移网格法进行数值模拟,并通过动模型实验进行验证。研究结果表明:16车编组的高速列车以速度400 km/h在净空面积为100m^(2)的标准双线隧道内交会时,从头车到尾车方向上,车外表面的平均压力峰峰值不断减小,车内的平均压力峰峰值不断增大;综合考虑现有高速列车气密性与舒适度标准,运行速度为400 km/h的长编组高速列车双线隧道净空面积推荐采用100 m^(2)。
Aerodynamic characteristics of the 400 km/h 16-car unit high-speed trains intersecting in different crosssectional area tunnels(90, 95, 100, 105, 110 m^(2)) were numerically investigated and recommendations on the crosssectional area of tunnels with consideration of pressure comfort standard were put forward. The RNG k-εturbulence model and sliding grid method were adopted for the numerical simulation, which was validated by the moving model test. The results show that when the 16-car unit high-speed trains intersects in the 100 m^(2)standard double track tunnel at the speed of 400 km/h, from the head train to the tail train, the average pressure wave amplitude on the train surface decreases continuously, the average pressure wave amplitude inside the train demonstrates the opposite. Considering the air tightness level and comfort standard of existing high-speed trains,100 m^(2) is recommended for double track tunnel of 400 km/h long unit train.
作者
王田天
吴小梅
张雷
钱博森
陆意斌
WANG Tiantian;WU Xiaomei;ZHANG Lei;QIAN Bosen;LU Yibin(Key Laboratory of Traffic Safety on Track,Ministry of Education,School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China;College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2023年第1期378-389,共12页
Journal of Central South University:Science and Technology
基金
国家重点研发计划项目(2020YFA0710903-C)
国家自然科学基金资助项目(51905547,52078199,52002408)
中国国家铁路集团有限公司科研项目(K2020J003)
湖南省研究生科研创新项目(CX20200132)。
关键词
隧道净空面积
动态密封指数
压力舒适性
高速列车
tunnel clearance area
dynamic sealing index
pressure comfort
high speed train
