Study of the energy consumption of the piped vehicle hydraulic transportation

Li, Yongye; Sun, Xihuan; Zhang, Xuelan

doi:10.1177/1687814019885541

Cited by 5 publications

(6 citation statements)

References 6 publications

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“…Previous studies concerning HCP have analyzed transport efficiency and sought to improve the transportation models. Dynamic models for hydraulic capsule pipelines have been established to analyze HCP transport efficiency [27]. The hydrodynamic forces acting on capsules have been divided into frictional drag and pressurized drag [28].…”

Section: Introductionmentioning

confidence: 99%

“…Based on a dynamic model of capsule motion, these studies used the time-averaged speed of capsule motion to establish a dynamic model between the motion speed and the hydrodynamic forces. Li et al [27] tested a dynamic model using a physical experiment and researched the dynamic characteristics of the system based on energy consumption to quantify its transport efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Modal Analysis of the Hydrodynamic Force of a Capsule in a Hydraulic Capsule Pipeline

Zhao,

Li,

Sun

2023

JMSE

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Hydrodynamic forces influence the efficiency and safety of pipeline transport in ocean engineering. A capsule pipeline is an example of pipeline transportation. In this work, a dynamic model is proposed to explain the oscillating motion of a capsule in a hydraulic capsule pipeline (HCP). The main study was conducted using a modal analysis of hydrodynamic forces acting on a capsule, which could be divided into frictional drag and pressure drag forces. The results indicated the presence of independent modes with different contributions to the hydrodynamic forces. Ultimately, the first to fiftieth modes represented 94~97.3% of the hydrodynamic force contributions. These modes had their own frequency ranges and power spectrum density (PSD) functions, and the frictional drag and pressure drag were both found to coincide with the narrow-band characteristics of the lower-order modes. However, the PSD functions of the frictional drag were found to fulfill the wide-band characteristics corresponding to the higher-order modes. Then, coherent structures were extracted. As the mode order increased, the vortices became more fragile and the frequency became higher. This phenomenon coincided with an increase in the frequency of the time coefficient peak, which became larger. This work could provide new perspectives on the hydrodynamic forces of pipeline transport, especially its dynamic analysis of the interaction between a rigid capsule and fluid flow.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modal Analysis of the Hydrodynamic Force of a Capsule in a Hydraulic Capsule Pipeline

Zhao,

Li,

Sun

2023

JMSE

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“…Hydraulic capsule pipeline transportation (HCP) is such a transportation method [2]. Its energy sources can be the potential energy of water in lakes or reservoirs, the kinetic energy of rivers, and other green energy sources [3].…”

Section: Introductionmentioning

confidence: 99%

Wheeled Capsule Threshold of Motion at Different Locations in a Horizontal Bend Pipeline Based on Hydraulic Capsule Pipeline Transportation

Zhao

Yuan

et al. 2022

Water

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As the process before the transporting of the capsule in a hydraulic capsule pipeline system, the capsule’s threshold of motion process is often tested in the horizontal straight pipe. However, the result of the physical test in this work shows that the wheeled capsule more easily start-moves in a horizontal bent pipe. Thus, the numerical simulation and the theory analysis were used to study the wheeled capsule’s threshold of motion process in the bent pipe. The simulation results demonstrate that the velocity magnitude of the water flow was asymmetric between the inner part and the outer part of the section closing on the wheeled capsule. This was unlike the water flow of the section in the straight pipe. From this result, a new mechanical model was proposed that divides the wheeled capsule into two parts. The two parts of the mechanical model correspond to the two parts of the section. Then, the deduction has shown that the bolsters of the inner part of the wheeled capsule in the bent pipe endured lower maximum static friction than those in the straight pipe. The whole wheeled capsule was more unstable in the bent pipe than in the straight pipe because of the additional drag force induced by the centrifugal effect of the bent pipe’s water flow.

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“…Agarwal et al [18][19][20] analyzed the effects of the size of the capsule structure on the movement of the capsule and concluded that the ratio of capsule diameter to pipe diameter had the most significant effect on the movement speed of the capsule. Li et al [21][22][23] studied the movement characteristics of the capsule under different length-diameter ratios, flow discharges, and transporting load conditions, established a movement model of the capsule under various influencing factors, and analyzed the energy consumption of the capsule in the process of transporting materials. Ulusarslan and Teke [24,25], as well as Ulusarslan [16], studied the pressure drop of flow during the movement of a low-density spherical capsule and analyzed the relationship between the pressure drop of flow and the density of the capsule.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Velocity Characteristics during Capsule Hydraulic Transportation in a Horizontal Pipe

Sun

et al. 2020

Water

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Capsule hydraulic transportation is a kind of low-carbon and environmentally friendly pipeline transportation technique. In this study, the flow velocity characteristics in the pipeline when the capsule is transported in a straight pipe section were simulated by adopting the RNG (Renormalization Group) k–ε turbulence model based on Fluent software and experimentally verified. The results showed that the simulated value of flow velocity in the pipeline was basically consistent with the experimental value during transportation of the material by the capsule, and the maximum relative error was no more than 6.7%, proving that it is feasible to use Fluent software to simulate the flow velocity characteristics in the pipeline when the capsule is transported in a straight pipe section. In the process of material transportation, the flow velocity distribution of the cross-section near the upstream and downstream sections of the capsule was basically the same, which increased with the increased length–diameter ratio of the capsule. The axial flow velocity was smaller in the middle of the pipe and larger near the inner wall of the pipe. From the inner wall to the center of the pipe, the radial flow velocity first increased and then decreased. The circumferential flow velocity was distributed in the vicinity of the support body of the capsule. The axial flow velocity of the annular gap section around the capsule first increased and then decreased from the inner wall of the pipe to the outer wall of the capsule. In the process of transporting materials, the influence of the capsule on the flow of its downstream section was greater than that of its upstream section. These results could provide a theoretical basis for optimizing the technical parameters of capsule hydraulic transportation.

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Study of the energy consumption of the piped vehicle hydraulic transportation

Cited by 5 publications

References 6 publications

Modal Analysis of the Hydrodynamic Force of a Capsule in a Hydraulic Capsule Pipeline

Modal Analysis of the Hydrodynamic Force of a Capsule in a Hydraulic Capsule Pipeline

Wheeled Capsule Threshold of Motion at Different Locations in a Horizontal Bend Pipeline Based on Hydraulic Capsule Pipeline Transportation

Numerical Simulation of Flow Velocity Characteristics during Capsule Hydraulic Transportation in a Horizontal Pipe

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