Hartmann discovered the resonance tube phenomenon in 1918. Although researchers have
conducted extensive studies on this topic during the intervening 90 years, no single …

Hartmann–Sprenger tube is a device in which an underexpanded jet enters a closed end
tube that is placed in a specific distance from the nozzle. In specific conditions, a standing …

Non-circular jets impinging on open-closed type cylindrical cavity are investigated. Five
different orifice shapes, namely, circle, ellipse, rectangle, square, and triangle, are used to …

Experimental studies are conducted to investigate the effect of internal chamfer at the mouth
of Hartmann resonators. Studies involve a range of nozzle pressure ratios from 4 to 6, and …

The efficient way of chamfering at the mouth of Hartmann whistles in generating higher
acoustic emission levels are experimentally demonstrated in this paper. The relevant …

The droplet quality of hydrodynamic ultrasonic atomization nozzle is better than the ordinary
two-phase nozzle. And the atomization amount is larger than the piezoelectric atomization …

The article focuses on acoustic resonators made of perforated sheets bonded onto
honeycomb cavities. This kind of resonators can be used in adverse conditions such as high …

Experiments were carried out to investigate the effect of tube lip thickness on Hartmann--
Sprenger (HS) tones in the moderately underexpanded conditions. It is found that the …

The paper presents high frequency pointwise measurements of pressure and temperature
carried out on a shock wave generator consisting of a couple of supersonic jets impinging …

Experimental investigations are carried out on Hartmann whistles to explore the effect of
external chamfer at the cavity mouth. The acoustic performance depends upon the cavity …