Drag coefficient of a capsule inside a vertical angular pipe

Yanaida, Katsuya; Tanaka, Mamoru

doi:10.1016/s0032-5910(97)03301-9

Cited by 6 publications

(10 citation statements)

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“…The drag coefficient has been found to be 1.79. The drag coefficient value is well within the expected range, as mentioned in the works of Feng et al [50] and Yanaida et al [51]. The pressure drop across the HCP has been calculated to be 319Pa(g) as compared to 92Pa(g) in case of water flow only.…”

Section: Resultssupporting

confidence: 80%

Development of a design methodology for hydraulic pipelines carrying rectangular capsules

Asim

Mishra

Abushaala

et al. 2016

International Journal of Pressure Vessels and Piping

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The scarcity of fossil fuels is affecting the efficiency of established modes of cargo transport within the transportation industry. Efforts have been made to develop innovative modes of transport that can be adopted for economic and environmental friendly operating systems. Solid material, for instance, can be packed in rectangular containers (commonly known as capsules), which can then be transported in different concentrations very effectively using the fluid energy in pipelines. For economical and efficient design of such systems, both the local flow characteristics and the global performance parameters need to be carefully investigated. Published literature is severely limited in establishing the effects of local flow features on system characteristics of Hydraulic Capsule Pipelines (HCPs). The present study focuses on using a well validated Computational Fluid Dynamics (CFD) tool to numerically simulate the solid-liquid mixture flow in both on-shore and off-shore HCPs applications including bends. Discrete Phase Modelling (DPM) has been employed to calculate the velocity of the rectangular capsules. Numerical predictions have been used to develop novel semi-empirical prediction models for pressure drop in HCPs, which have then been embedded into a robust and user-friendly pipeline optimisation methodology based on Least-Cost Principle.

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Section: Resultssupporting

confidence: 80%

Development of a design methodology for hydraulic pipelines carrying rectangular capsules

Asim

Mishra

Abushaala

et al. 2016

International Journal of Pressure Vessels and Piping

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show abstract

“…Tsuji et al [10] concluded that the presence of multiple capsules affected the flow structure within HCPs, while Ohashi et al [11] concluded that the pressure drop within HCPs was inversely proportional to the Froud Number. The same conclusions have been drawn by Bartosik et al [12] and Yanaida et al [13] as well.…”

Section: Introductionsupporting

confidence: 86%

Effect of capsule shape on hydrodynamic characteristics and optimal design of hydraulic capsule pipelines

Asim

Algadi

Mishra

2018

Journal of Petroleum Science and Engineering

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Hydraulic capsule pipelines (HCPs) are the third generation pipelines transporting hollow containers, known as capsules. These capsules are filled with material/cargo to be transported. The shape of these capsules has a significant effect on the hydrodynamic flow characteristics within HCPs. As the variations in the pressure distribution within HCPs are directly linked to and the flow characteristics within pipelines, it is essential to critically evaluate the effect of capsule shape on the pressure drop across the pipeline. Published literature is severely limited in terms of establishing the effects of the shape of the capsules on the flow characteristics within pipelines. Hence, the present study focuses on using a wellvalidated Computational Fluid Dynamics tool to numerically simulate the flow of capsules of various shapes quantified in form of a novel shape factor in hydraulic capsule pipelines. Both onshore and offshore applications of such pipelines have been investigated in the present study, along-with pipe fittings, such as bends. Variations in flow related parameters within these pipelines have been discussed in detail for a wide range of geometrical parameters associated with the capsules and the pipelines. Pressure drop values have been used to develop novel semi-empirical prediction models as a function of the shape factor and other flow and geometric variables of the capsules. These prediction models have been embedded into a pipeline optimisation methodology, which has been developed based on Least-Cost Principle. The resulting novel optimisation methodology can be used for hydraulic capsule pipeline design. Performance charts for practical applications have been developed for easy implementation of the design methodology for the designers of hydraulic capsule pipelines transporting capsule of different shapes.

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“…Agarwal [18] and Vlasak [19] used dimensional analysis to analyze the effects of different physical factors on the capsule speeds. Yanaida et al [20] and Azouz et al [21] supplemented Polderman et al's [11] research findings. They highlighted the turbulence vortex viscosity models to predict the hydraulic characteristics of the annular slit flow formed by a Newtonian fluid, non-Newtonian fluid, and drag-reducing fluid under a moving boundary, which further perfected the correlative theories of the annular slit flow.…”

Section: Introductionmentioning

confidence: 74%

Effects of Guide Vane Placement Angle on Hydraulic Characteristics of Flow Field and Optimal Design of Hydraulic Capsule Pipelines

Zhang

Sun

et al. 2018

Water

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With the rapid growth of agricultural trade volumes, the transportation of agricultural products has received widespread attention from society. Aiming at these problems of low transport efficiency and high transport cost in long-distance transport of agricultural products, an energy-saving and environmental-friendly transport mode of agricultural machinery-hydraulic capsule pipelines (HCPs)-was proposed. HCPs effectively solve issues like traffic congestion, energy crises, and atmospheric pollution. Published literature is mainly limited to the capsule speed and the pressure drop characteristics of the fluid within the pipelines. This research was conducted on the following four aspects of HCPs. Firstly, the structure of the carrier was improved and called a 'piped carriage'. Secondly, a coupled solution between the structural domain of the piped carriage and the fluid domain within the pipelines was numerically investigated by using the commercial CFD software ANSYS Fluent 12.0 based on the bidirectional fluid-structure interaction methods. Thirdly, the effects of guide vane placement angle on hydraulic characteristics of the internal flow field within the horizontal pipelines transporting the piped carriage were extensively evaluated. Finally, based on least-cost principle, an optimization model of HCPs was established. The results indicated that the simulated results were in good agreement with the experimental results, which further demonstrated that it was feasible to adopt the bidirectional fluid-structure interaction methods for solving the hydraulic characteristics of the internal flow field when the piped carriage was moving along the pipelines. This article will provide an abundant theoretical foundation for the rational design of HCPs and its popularization and application.

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Drag coefficient of a capsule inside a vertical angular pipe

Cited by 6 publications

References 0 publications

Development of a design methodology for hydraulic pipelines carrying rectangular capsules

Development of a design methodology for hydraulic pipelines carrying rectangular capsules

Effect of capsule shape on hydrodynamic characteristics and optimal design of hydraulic capsule pipelines

Effects of Guide Vane Placement Angle on Hydraulic Characteristics of Flow Field and Optimal Design of Hydraulic Capsule Pipelines

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