The wavelet transform is applied to experimental pressure fluctuations in swirling gas-particle two-phase flows in this paper, to identify and interpret flow pattern transitions in both Fourier and physical spaces. From randomlike pressure fluctuations the characteristic of swirling gas-particle twophase flows can be extracted, and the relationship between the wall pressure fluctuation and the ...

conveying velocity, pipe wear, and particle degradation. An experimental study has Yuji Tomita addressed the characteristics of swirling flow pneumatic conveying (SFPC) for the Professor, total pressure drop, solid flow patterns, power consumption, and additional pressure Department of Mechanical Engineering, drop. Polystyrene, polyethylene, and polyvinyl particles with mean diameters of 1.7, K...

The design and optimization of hydrocyclones using CFD techniques are gaining popularity and the key to a successful simulation lies with the accurate description of the high turbulent swirling behavior of the flow. This paper presents a detailed co...

We propose a new criterion to characterize hierarchical two-dimensional vortex regions induced by swirling motion. Central to the definition are closed loops that intersect the flow field at a constant angle. The union of loops belonging to the same area of swirling motion defines a vortex region. These regions are disjunct but may be nested, thus introducing a spatial hierarchy of vortex regio...

Vortex breakdown of swirling, round jet flows is investigated in the compressible, subsonic regime by means of Direct Numerical Simulation (DNS). This is achieved by solving the compressible Navier–Stokes equations on a cylindrical grid using high-order spatial and temporal discretization schemes. The Reynolds number is Re = ρ c w ◦ c R ◦/μ◦c = 5000 and the flow is moderately compressible with ...

Soft particles display a rich zoology of dynamics with bifurcation depending on the interfacial mechanical response. One intriguing issue is origin motions along helices, dynamic only observed active particles. Numerical simulations vesicle, passive particle in Poiseuille flow, show that this called swirling fact more ubiquitous and emerges spontaneously. Swirling ultimate state symmetry loss s...