Avoidance of Self-excited Oscillation of Condensation Shock Wave Using a Double Slot.

繁, 松尾; 俊明, 瀬戸口; 克己, 島本; 征将, 田中; 賢二, 金子

doi:10.1299/kikaib.68.3338

Cited by 2 publications

(1 citation statement)

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“…A supersonic indraft wind tunnel (32) where moist air at atmospheric pressure was drawn into a vacuum tank, was used in the present experiment. Test section is a rectangular box which has a length of 553 mm, a width of 126 mm, and height of 126 mm.…”

Section: Experimental Apparatus and Methodsmentioning

confidence: 99%

A Study on Characteristics of Under-Expanded Condensing Jet

Otobe

Matsuo

Tanaka

et al. 2006

JSME international journal. Ser. B, Fluids and thermal engineer

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The single supersonic free jet discharging from a nozzle or an orifice has been often employed in various industrial processes. A number of studies have been done on the major features (Mach disk, barrel shock wave and the jet boundary configuration) of the supersonic jets. In the present study, numerical computations were performed to investigate the effect of initial degree of supersaturation of moist air at reservoir condition on under-expanded jet structures and the total pressure loss behind the Mach disk. From these studies, it was found that the position of Mach disk in the under-expanded moist air jets was almost the same as that in dry air jets. However, the diameter of Mach disk increased slightly with an increase in the initial degree of supersaturation of moist air. Furthermore, the total pressure loss behind the Mach disk of moist air jet changed largely in comparison to that of dry air jet.

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Section: Experimental Apparatus and Methodsmentioning

confidence: 99%

A Study on Characteristics of Under-Expanded Condensing Jet

Otobe

Matsuo

Tanaka

et al. 2006

JSME international journal. Ser. B, Fluids and thermal engineer

Self Cite

View full text Add to dashboard Cite

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Passive Control of Non-equilibrium Condensation in Prandtl-Meyer Expansion Fan Using the Slotted Wall with Cavity

Tanaka¹,

Matsuo²,

Setoguchi³

et al. 2005

TVSJ

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In this paper, the effects of the passive technique using the slotted wall with cavity on the characteristics of a steady condensation shock wave generated in a Prandtl-Meyer flow were investigated experimentally. Furthermore, in order to clarify the variation of condensate properties in the flow field, Navier-Stokes equations were solved numerically using a 3rd-order MUSCL type TVD finite-difference scheme. From experimental results, it was found that the strength of steady condensation shock wave in case with passive control using the slotted wall with cavity was suppressed in comparison with no passive case (solid wall), and the present passive technique was the most effective when a foot of the condensation shock wave was located at the middle of slotted wall. Furthermore, the unsteady condensation shock wave in the Prandtl-Meyer expansion fan was simulated and it was confirmed numerically that the passive technique was also effective for controlling of an unsteady condensation shock wave.

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Avoidance of Self-excited Oscillation of Condensation Shock Wave Using a Double Slot.

Cited by 2 publications

References 0 publications

A Study on Characteristics of Under-Expanded Condensing Jet

A Study on Characteristics of Under-Expanded Condensing Jet

Passive Control of Non-equilibrium Condensation in Prandtl-Meyer Expansion Fan Using the Slotted Wall with Cavity

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