To improve the operation efficiency of conventional Ludwieg tube tunnel, a fast-acting valve
is usually deployed between the storage tube and Laval nozzle in order to separate the high …

Ludwieg 管风洞能低成本, 高效率地产生低湍流度的高超声速气流, 被广泛用于高超声速(马赫数
6 及以上) 基础空气动力学实验研究. 尽管Ludwieg 管式高超声速风洞逐渐普及 …

RANS simulations of a tandem nozzle supersonic wind tunnel with perforated plates
installed in the settling chamber are presented in this paper. For the sake of obtaining more …

In this study, the disturbance characterization and flow quality improvement of a newly
designed Tandem Nozzle Mach 3 Wind Tunnel are presented. Firstly, a combined modal …

Ludwieg 管风洞是开展高超声速空气动力学实验基础研究的重要平台. 但是,
快开阀启动式高超声速Ludwieg 管风洞长期受快开阀影响, 产生不同类型的来流扰动模态 …

This study describes the application of a novel damping insert material for reducing the flow
fluctuations in a tandem nozzle supersonic wind tunnel. This new damping material is …

This paper considers the influence of Reynolds number on the transition behavior of a dual-
bell nozzle with special regard to hysteresis. For this purpose, Reynolds averaged Navier …

The geometry of a classical space launcher usually shows a decrease in diameter at the
connection of the main body with the nozzle fairing. At this location a separated flow with a …

来流扰动对高超声速风洞中开展的实验研究, 如层/湍流边界层的不稳定性与转捩实验,
有直接影响. 为加深对高超声速风洞中边界层转捩实验的认识, 需对高超声速风洞的来流扰动 …

The present study investigates the behavior of first-mode instability waves on a 7 deg half-
angle sharp cone model at zero angle of attack in Mach 3 supersonic flow, both numerically …