an experimental study on the wall collision of micro-sized

Collapse of Granular Columns With Fractal Particle Size

The wall removal time T* is defined as T * = H 0 /v wall to investigate the influence of the wall removal velocity v wall on the granular column collapse. IR and left and right values in brackets in Figure 2 a mean wall immediate removal, correlation coefficients for D and L 1, and for D and θ, respectively.

A mean free path approach to the micro/nanochannel

2020/5/7For a micro-channel gas flow, we choose our wall atoms to be platinum (Pt), and the gas-wall (Ar-Pt) interaction is also modelled with the Lennard-Jones potential. The equations of motion are integrated using a velocity Verlet algorithm with a time step of Δ t =0.002 τ, where the characteristic time unit is (tau = {sigma _{Ar}}sqrt {m_{Ar} left / varepsilon _{Ar}right.}=2.15 times

Dynamics of high

For comparison to air entrainment by mm-sized droplets, the experimental and numerical results from Bouwhuis et al. (2012) 19 are included (green and red markers). The lines show scaling laws proposed for the capillary air entrainment regime (low-St, solid lines, from ref. 19 ) and the inertial air entrainment regime (high-St, dashed lines, from ref. 19 and 60 ).

The coalescence of two equal

A four-roll mill was used to experimentally investigate the coalescence of two equal-sized drops in general linear flows. The experimental system consisted of polybutadiene drops suspended in polydimethylsiloxane. Under the experimental conditions studied, the

Observation of FRET in collision of droplets

Hence, wall e ects from the experimental chamber are negligible, which makes the technique of optical levitation suitable for studies of various interaction processes. The process of collision and coalescence of droplets, when two or more droplets form a single larger droplet,

Dynamics of high

For comparison to air entrainment by mm-sized droplets, the experimental and numerical results from Bouwhuis et al. (2012) 19 are included (green and red markers). The lines show scaling laws proposed for the capillary air entrainment regime (low-St, solid lines, from ref. 19 ) and the inertial air entrainment regime (high-St, dashed lines, from ref. 19 and 60 ).

Erosion and Deposition in Turbomachinery

An experimental study of the effects of different transverse trenches on deposition on a turbine vane with film-cooling at high temperature Aerospace Science and Technology, Vol. 107 Comparison on multi-angle erosion behavior and mechanism of Cr3C2-NiCr coatings sprayed by SPS and HVOF

An experimental study on the wall collision of micro

2020/7/1To address this issue, we present an experimental study on the wall collision of natural micro-sized graphite particles. The high-speed photography together with a microscope is used to dynamically film the wall collision process of micro-sized graphite particles.

Observation of FRET in collision of droplets

Hence, wall e ects from the experimental chamber are negligible, which makes the technique of optical levitation suitable for studies of various interaction processes. The process of collision and coalescence of droplets, when two or more droplets form a single larger droplet,

Numerical Study of Liquid Phase Hydrogen Peroxide Decomposition in Catalytic Micro

Proceedings of the International Conference on New Trends in Transport Phenomena Ottawa, Ontario, Canada, May 15-16 2014 Paper No. 83 83-1 Numerical Study of Liquid Phase Hydrogen Peroxide Decomposition in Catalytic Micro-reactors M. Ryan McDevitt

Title: The physics of protoplanetesimal dust

2012/8/15Abstract: We performed micro-gravity collision experiments in our laboratory drop-tower using 5-cm-sized dust agglomerates with volume filling factors of 0.3 and 0.4, respectively. This work is an extension of our previous experiments reported in Beitz et al. (2011) to aggregates of more than one order of magnitude higher masses.

An experimental study on the removal of submicron fly

The layout of the experimental apparatus in this study is shown in Fig. 1. It mainly consists of particle generation, particle charging, droplet charging, a WES reactor and particle measurement. First of all, the airflow was filtered to generate a particle-free flow, and the standardized flow rate (180 m 3 h −1 ) was monitored by a high-precision turbine flowmeter (LWQ-100, Fulang Instrument).

On the fabrication of micro

Abstract Ion-induced bending phenomena were studied in free-standing nano-sized Al cantilevers with thicknesses in the range of 89–200 nm. The objective is to present a predictive and useful model for the fabrication of micro- and nano-sized specimens. Samples

The Thickness of the Liquid Microlayer Between a Cap

Millimeter-sized spherical bubbles of FC-87 vapor were injected near the lower end of a uniformly heated aluminum plate. Experimental Study of Flow Pattern and Heat Transfer Associated With a Bubble Sliding on Downward Facing Inclined Surfaces," 26, pp.

Numerical Study of Liquid Phase Hydrogen Peroxide Decomposition in Catalytic Micro

Proceedings of the International Conference on New Trends in Transport Phenomena Ottawa, Ontario, Canada, May 15-16 2014 Paper No. 83 83-1 Numerical Study of Liquid Phase Hydrogen Peroxide Decomposition in Catalytic Micro-reactors M. Ryan McDevitt

Liquid Wicking in a Paper Strip: An Experimental and

The experimental and the simulated data show almost similar results, whereas the data from the L–W model and evaporation model deviate from the experimental results. The reason behind this is that in the case of the L–W model, the capillary height ( h ) is varying with time ( t ) as h ∝ t 0.5, which is not valid for a more extended time because of the retardation in liquid flow velocity

Experimental Study of Deformation Mechanism of a

This paper is concerned with the collision dynamics of a water droplet impinging on three kinds of smooth surfaces (Inconel alloy 625, stainless-steel, and silicon) heated to above the Leidenfrost temperature (500 C). It has been found that the time histories of the

Underlying mechanisms of propeller wake interaction with

The study consists of a comprehensive experimental survey of a reference propeller–wing configuration based on detailed flow measurements by LDV and PIV, time-resolved flow visualisations and detailed wall-pressure measurements. The interaction between the

A numerical study on adhesive collision between a micro-sized particle and a wall .POWDER TECHNOLOGY, 2020, 360: 769-779. Zhu Fang, Hongtao Wang, Yiyang Zhang*, Mingzhe Wei, Xinxin Wu, Sun Libin. A finite element method (FEM) study on adhesive particle-wall normal collision .JOURNAL OF AEROSOL SCIENCE, 2019, 134: 80-94.

Ice crystal impact onto a dry solid wall. Particle

In this experimental and theoretical study, the impact of non-spherical and spherical ice particles onto a solid surface is investigated. The impact velocity of the particles was varied between 1 and 74 m s −1.The size of the particles ranged from 30 μm to 3.5 mm.

Compressible liquid flow in nano

In this study, we consider the wall–liquid interaction to investigate the flow mechanisms behind a compressible liquid flow in nano- or micro-sized circular tubes. We assume that the liquid is attracted by the wall surface primarily by the Lifshitz–van der Waals (LW)

Experimental study of microbubble coalescence in a T

This study presents the microbubble coalescence process in a confined microchannel. Triple T-junction microfluidic devices with different main channel size were designed to generate monodispersed microbubble pairs with air/n-butyl alcohol–glycerol solution as the working system. The head-on collision of microbubble pair was realized in the microfluidic devices. Three collision results

Collapse of Granular Columns With Fractal Particle Size

The wall removal time T* is defined as T * = H 0 /v wall to investigate the influence of the wall removal velocity v wall on the granular column collapse. IR and left and right values in brackets in Figure 2 a mean wall immediate removal, correlation coefficients for D and L 1, and for D and θ, respectively.

Simulation and experimental study of asymmetric split

The total length of the micromixer is 10,200 μm. Fig. 1b is the enlarged view of the D‐shaped unit in which the radius of the semicircular split wall is the same as W, the width of straight sub‐channel W 3 in the D‐shaped unit is 150 μm, and the width of bent subW

The influence of red blood cell deformability on

2020/3/12To study the behavior of stiffened RBCs in bulk rheology, we simulate whole blood flowing through a periodic pipe of radius R = 50μm with a tank hematocrit of 30% driven by a body force resulting in a wall shear rate of 1000s −1.

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