CAJ | 학술논문

采用多孔介质模型描述渗透式纤维空气分布系统数值物理模型，研究了纤维空气分布系统空腔内部区域空气流速和压力等流动特性。结果表明：沿管长方向，纤维空气分布系统空腔中心区域空气以较高的速度向前流动，速度越来越小，总压逐渐降低，静压逐渐增大，但二者的梯度均越来越小；靠近纤维壁面区域空气流向逐渐改变，最终沿垂直于纤维空气分布系统壁面的方向从纤维孔隙向外渗透扩散；沿半径增加的方向，空气总压呈辐射状递减，静压则基本不变。
채용다공개질모형묘술삼투식섬유공기분포계통수치물리모형，연구료섬유공기분포계통공강내부구역공기류속화압력등류동특성。결과표명：연관장방향，섬유공기분포계통공강중심구역공기이교고적속도향전류동，속도월래월소，총압축점강저，정압축점증대，단이자적제도균월래월소；고근섬유벽면구역공기류향축점개변，최종연수직우섬유공기분포계통벽면적방향종섬유공극향외삼투확산；연반경증가적방향，공기총압정복사상체감，정압칙기본불변。
The porous medium model is developed for describing a fabric air dispersion system (FADS) in penetration mode in simulation. And properties of airflow velocity and pressure inside are predicted. Results show that airflow in central zone flows forward at higher velocity and internal total pressure reduce gradually along the length direction. Both the gradient of air velocity and pressure reduce gradually too. Also, air changes flow direction close to the porous fiber structure, and eventually disperses out through tiny-sized pores in the direction perpendicular to the half-cylindered fiber. Furthermore, the total pressure inside reduces gradually along the radial direction, yet the static pressure inside seldom changes. The static pressure in the radial direction is almost the same.