Numerical Simulation of Gas-Particles Two Phase Flow in Pipe of Complex Geometry: Pneumatic Conveying of Olive Cake Particles Toward a Dust Burner

Bounaouara, Hamdi; Ettouati, H.; Ticha, Hmaied Ben; Mhimid, Abdallah; Sautet, Jean-Charles

doi:10.18280/ijht.330114

Cited by 13 publications

(16 citation statements)

References 12 publications

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“…At stage 2, pressure decreased, because the suction waves by sliding vane pumps have transmitted to the measured points, and the liquid inside started accelerated movement by pumping and pushing of air compressor. With the differential pressure of sliding pump far above the power by air compressor, the sliding vane pump played a leading role in liquid evacuation process and the pipe-bottom pressure decreases sharply [6] [7]. At stage 3, the pressure drop stopped.…”

Section: Flow Pattern Changing Rule In Liquid Evacuation Processmentioning

confidence: 99%

Gas-liquid two-phase flow characteristics in pump-assisted evacuation process for pipeline

Guo¹,

Zhang²,

Jiang³

et al. 2017

IJHT

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The test studies the gas-liquid two-phase flow characteristics in pump-assisted evacuation process for hillyterrain pipeline system. In pump-assisted evacuation process, there appear two flow patterns: stratified flow and slug flow. By means of reducing upstream back pressure, the pump-assisted evacuation can increase the liquid flow rate, promoting the transition of flow pattern. For the pipe-bottom pressure change process, it increases firstly, then decreases, and slowly increases at last. During the process of pressure drop, there will appear temporary buffer section for the slug accumulation. The pressure fluctuation doesn't increase with inlet superficial gas velocity, and the max fluctuation range appears in the working condition with 0.88m/s superficial gas velocity. The outlet liquid flow rate corresponds to the pressure fluctuation. Four stages are divided for the variation process. The flow rate is less influenced by the inlet superficial gas velocity, but more influenced by the inclined angle. By using gas front-end velocity meter to check the evacuation efficiency, it is found that with inclined angle of upward inclined pipe (UIP) unchangeable, the higher the gas superficial velocity, the greater the gas front-end velocity, presenting an approximate linear relationship; with the gas superficial velocity unchangeable, the gas front-end velocity almost remains the same, even with the inclined angle of upward inclined pipe increasing.

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Section: Flow Pattern Changing Rule In Liquid Evacuation Processmentioning

confidence: 99%

Gas-liquid two-phase flow characteristics in pump-assisted evacuation process for pipeline

Guo¹,

Zhang²,

Jiang³

et al. 2017

IJHT

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show abstract

“…According to the PD theory, the author firstly configures the boundary conditions, and then solves the displacement, speed, damage and other factors of each point unit by the motion equation [14,15,16,20,21]. The author also controls the number of the iterative steps (i.e.…”

Section: The Flow Of Numerical Calculation Programmentioning

confidence: 99%

Influencing factors of peridynamics analysis and calculation

Qian¹,

Qin²,

Shi³

2017

IJHT

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In this paper, a material structural model is constructed based on a cubic lattice, and applied with a fixed load and an impact load. To provide the basis for parameter selection in modelling, the error and efficiency of structural calculation are analyzed by changing the two parameters in the peridynamics (PD) computation model: near-field region radius δ and m value. During modelling, when δ is given a fixed value, the calculation accuracy will increase with the m value, but the calculation efficiency will change in the opposite trend, thus affecting the path and direction of crack propagation; when m is given a fixed value, the number of point units in the near-field region and the calculation accuracy will not change with δ, but will still affect the path and direction of crack propagation.

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“…Through the PIV results, LI Ya-lin [8] estimated the tracking characteristics of various tracer particles, discussed the advantages and disadvantages of different tracer particles and proposed suitable PIV tracer particles for a centrifugal pump. Computer simulation experiments [9] are commonly used in addition. José A. Caridad [10] simulated the characteristics of centrifugal pump blades in the gas-liquid two-phase flow by CFD, and discovered its characterization.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on hydraulic characteristic of centrifugal pump in plateau

Jiang¹,

Zhang²

2017

IJHT

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The hydraulic characteristics of a centrifugal pump change when in a plateau, while the corresponding law is unclear. Therefore, experimental research needs to be undertaken on the hydraulic characteristics of a centrifugal pump in a plateau for a quantitative analysis of the changing law. In this paper, the working status of a centrifugal pump in a plateau was simulated by the method of controlling the inlet vacuum so as to acquire the pressure and the flow data under different working conditions. The corresponding conclusions were reached by using thorough data analysis, which shows that with every 500m increase in altitude, the accompanying pump pressure decreased by about 5%-10%, the flow decreased by about 2%-5% and the overall efficiency decreased by about 2%-9%. This theoretical analysis shows that the increase in pump frictional loss is the fundamental reason for the change in the hydraulic characteristics of a centrifugal pump in a plateau.

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Numerical Simulation of Gas-Particles Two Phase Flow in Pipe of Complex Geometry: Pneumatic Conveying of Olive Cake Particles Toward a Dust Burner

Cited by 13 publications

References 12 publications

Gas-liquid two-phase flow characteristics in pump-assisted evacuation process for pipeline

Gas-liquid two-phase flow characteristics in pump-assisted evacuation process for pipeline

Influencing factors of peridynamics analysis and calculation

Experimental research on hydraulic characteristic of centrifugal pump in plateau

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