Experimental study on the particle velocity development profile and acceleration length in horizontal dilute phase pneumatic conveying systems

Santo, Nir; Portnikov, Dmitry; Tripathi, Naveen Mani; Kalman, Haim

doi:10.1016/j.powtec.2018.07.074

Cited by 36 publications

(7 citation statements)

References 14 publications

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“…Tu and Yan [5] used a flow device with pulse excitation that alternately controls the gas into the pipeline through a solenoid valve, thereby achieving regular flow field modulation. NIR et al [6] collected the particle data in three dimensions and examined the impact of the velocity distribution on the equivalent velocity, they used an image processing program to detect the particle velocity in the horizontal tube.…”

Section: Introductionmentioning

confidence: 99%

Study on the flow characteristics of gas-solid two-phase flow in a horizontal-vertical pneumatic conveying system based on dunes

Wang,

Yan

2024

J. Phys.: Conf. Ser.

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In this paper, based on the accumulation pattern of particles flowing through the bend, the Dunes are designed to be placed in curves with different radii of curvature in a horizontal-vertical pneumatic conveying system, and the movement characteristics of the particles entering the vertical pipeline due to with Dunes are analyzed based on CFD-DEM. Compared to the case of No Dune, the Gas-solid two-phase velocities with Dune are almost evenly distributed in the pipe and are larger than the corresponding case of No Dune. At the same time, the particle axial velocities with Dunes are larger than the case without Dunes, the number of collisions of particles in vertical tubes is reduced due to Dunes, and the particles diverge sufficiently throughout the vertical tube from the particle flow patterns. The results show the effect of Dunes can increase the velocity of particles and reduce the impact of particles on the pipe wall, it is conducive to the transport of particles. Meanwhile, The experiment known as particle image velocimetry (PIV) verifies the accuracy of the numerical simulation results.

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Section: Introductionmentioning

confidence: 99%

Study on the flow characteristics of gas-solid two-phase flow in a horizontal-vertical pneumatic conveying system based on dunes

Wang,

Yan

2024

J. Phys.: Conf. Ser.

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“…In the field experiment, Kalman et al [13][14][15][16][17][18] conducted in-depth research on the transport flow characteristics of various materials based on the pneumatic-transport test Processes 2023, 11, 1574 2 of 14 platform. They studied the total bending pressure drop in dilute phase flow in detail.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Elbow Pressure Drop and Conveying Stability of Pneumatic Conveying for Stiff Shotcrete Based on Response Surface Methodology

Sun

et al. 2023

Processes

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The pressure drop and conveying stability caused by the bend significantly affect the pneumatic conveying process of stiff shotcrete, which is the key to solving the problem of long-distance transportation. In this paper, the effects of different air velocities (32 m/s, 36 m/s, 40 m/s), water-cement ratios (0.1, 0.2, and 0.3), and bending-diameter ratios (4, 12, and 20) on the pressure drop of the elbow R1 and conveying stability R2 are studied using the response surface method. The conveying stability is characterized by the pressure variation coefficient (C.V). The response surface graph aids in the intuitive analysis of the effects of these variables. The results show that the impact of air velocity on R1 and R2 is exceptionally significant, and the interaction of each factor on the response value is analyzed. The response value and the quadratic polynomial regression equation between the various factors are obtained in addition to the flow characteristics of stiff shotcrete under different working conditions. The relationship established by the statistical processing of the experimental results can provide some reference for specifying the pressure loss model of stiff shotcrete.

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“…Erosion by solid particles (ESP) in some cases is an undesirable phenomenon in engineering systems, such as the transport of solids in pneumatic systems, turbines, propellers, automobile components, armored systems, in forming processes, and so forth. [1][2][3][4][5][6] In other experimental erosion tests, some composite materials have been studied. [7][8][9][10][11] The use of composite materials in the wind industry has been going on for a few decades, mostly using fiberglass with epoxy resins.…”

Section: Introductionmentioning

confidence: 99%

Solid particle erosive wear study of polymer composite materials for wind turbine applications

et al. 2021

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In this study, erosion wear tests in composites materials (carbon fiber and fiberglass) were performed in order to understand their behavior for blades of wind turbine applications. The erosion tests were also made in coated composites materials with a polyester resin (gel coat), to compare the wear erosion resistance with uncoated materials. The experimental tests were carried out according to some parameters to the ASTM G76 standard. The specimens had a rectangular shape with dimensions of 25 × 18 mm and a thickness of 4 mm. The erosive particle used was obtained from sea sand. High impact angles were used, 75 , 85 , and 90 and the velocity particle was 12 m/s. The duration of each test was 6 min, removing the specimens every 2 min to measure the amount of mass loss. In order to identify the wear mechanisms, scanning electron microscopy was used. The results showed that fiberglass specimens had a higher mass loss at 90 impact angle. The best erosive wear performance was obtained in the uncoated carbon fiber specimens at 85 impact angle.

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Experimental study on the particle velocity development profile and acceleration length in horizontal dilute phase pneumatic conveying systems

Cited by 36 publications

References 14 publications

Study on the flow characteristics of gas-solid two-phase flow in a horizontal-vertical pneumatic conveying system based on dunes

Study on the flow characteristics of gas-solid two-phase flow in a horizontal-vertical pneumatic conveying system based on dunes

An Experimental Study on the Elbow Pressure Drop and Conveying Stability of Pneumatic Conveying for Stiff Shotcrete Based on Response Surface Methodology

Solid particle erosive wear study of polymer composite materials for wind turbine applications

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