2014
DOI: 10.1088/1674-1056/23/11/114702
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Experimental studies on flow visualization and velocity field of compression ramp with different incoming boundary layers

et al.

Abstract: Experimental studies which focus on flow visualization and the velocity field of a supersonic laminar/turbulent flow over a compression ramp were carried out in a Mach 3.0 wind tunnel. Fine flow structures and velocity field structures were obtained via NPLS (nanoparticle-tracer planar laser scattering) and PIV (particle image velocimetry) techniques, timeaveraged flow structures were researched, and spatiotemporal evolutions of transient flow structures were analyzed. The flow visualization results indicated … Show more

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Cited by 2 publications
(2 citation statements)
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“…[16] It has been used to investigate the supersonic mixing layer, boundary layer, compression ramp, aerooptics, and so forth. [17][18][19] As shown in Fig. 4, the NPLS system is composed of a nano-particle generator, a dual-cavity Nd:YAG laser, an interline transfer double-exposure CCD camera, a synchronizer, and a computer.…”
Section: Npls and Piv Techniquementioning
confidence: 99%
“…[16] It has been used to investigate the supersonic mixing layer, boundary layer, compression ramp, aerooptics, and so forth. [17][18][19] As shown in Fig. 4, the NPLS system is composed of a nano-particle generator, a dual-cavity Nd:YAG laser, an interline transfer double-exposure CCD camera, a synchronizer, and a computer.…”
Section: Npls and Piv Techniquementioning
confidence: 99%
“…A pulsed-plasma jet actuator [12] was used to control the unsteadiness of separation shock in a Mach 3 compression ramp; HSPIV (high-speed particle image velocimetry) [13] was applied to research the low-frequency dynamics characteristics of the separation region. Wu et al [14,15] experimentally investigated a supersonic flow over several compression ramps in a Mach 3.0 wind tunnel. Results indicate that when ramp angles are 25°, a typical separation occurs in laminar flow, and a certain extent separation occurs in transitional flow, while separation does not occur in turbulent flows.…”
Section: -Introductionmentioning
confidence: 99%