CAJ | 학술논문

针对高速铁路隧道空气动力学问题，现阶段研究的重点是找到更为有效减缓微压波的途径。采用数值分析中的动网格技术，对高速列车突进设置有非交叉开口型与交叉开口型缓冲结构的隧道进行数值模拟。研究结果表明：开口在减缓气动效应的作用上，会相互影响；修建适当的交叉开口型缓冲结构可以更有效地降低压力梯度峰值，在工程不变的情况下，降低率最大可达到8％；通过数值模拟对比分析，给出了两开口缓冲结构的最佳修建形式，并为交叉开口型缓冲结构的深入研究奠定了基础。
침대고속철로수도공기동역학문제，현계단연구적중점시조도경위유효감완미압파적도경。채용수치분석중적동망격기술，대고속열차돌진설치유비교차개구형여교차개구형완충결구적수도진행수치모의。연구결과표명：개구재감완기동효응적작용상，회상호영향；수건괄당적교차개구형완충결구가이경유효지강저압력제도봉치，재공정불변적정황하，강저솔최대가체도8％；통과수치모의대비분석，급출료량개구완충결구적최가수건형식，병위교차개구형완충결구적심입연구전정료기출。
As the speed of train increases , the pollution that roots in the micro-pressure wave pro-duced at the egress of tunnel becomes more serious .At present , the most important thing is to find a more effective method to mitigate the micro-pressure wave .The tunnel with cross-opening-hoop or uncross-opening-hoop was simulated using dynamic mesh technique .The results show that the aero-dynamic effect of the openings affluent each other and a proper cross-opening-hoop mitigates micro-pressure wave effectively , e.g., in a given amount of work , the reduction of the peak micro-pres-sure could be up to 8%.A best model for hoop with two openings is introduced , which could serve as the foundation for future research on cross-opening-hoop .