Flow Patterns of Ice/Water Slurry in Horizontal Pipes

Hirochi, Takero; Maeda, Yasuhiro; Yamada, S.; Shirakashi, Masataka; Hattori, Masaru; Saito, Akihiro

doi:10.1115/1.1760541

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…On the other hand, there are little difference between the densities of these kinds of hydrates and the correspond liquids, which means that the gravity should not be the main driving force to initiate the agglomeration of hydrate particles. The energy to separate the hydrate particles in the zone defined by the two dashed lines with a length of L in Figure 3 can be described as follows [18]:…”

Section: Safe Model Of Hydrate Slurries In Pipelinementioning

confidence: 99%

A model for estimating flow assurance of hydrate slurry in pipelines

Wang

Fan

Liang

et al. 2010

Journal of Natural Gas Chemistry

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Section: Safe Model Of Hydrate Slurries In Pipelinementioning

confidence: 99%

A model for estimating flow assurance of hydrate slurry in pipelines

Wang

Fan

Liang

et al. 2010

Journal of Natural Gas Chemistry

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“…Flow pattern of snow/water slurry in a pipe is quite different from conventional non-cohesive solid particle slurries due to the cohesive nature of snow particles in water [13]. When both the snow fraction, f, and the flow velocity, U, are lower than certain respective critical values, depending on sample snow, particles adhere each other to form clusters moving along the upper wall of the pipe (Cluster flow).…”

Section: Specific Flow Behavior Of Snow/water Slurry Flow In Pipesmentioning

confidence: 99%

“…It is shown that the flow pattern of snow/water slurry in various diameter pipes is determined by the snow fraction, f, and a non-dimensional parameter defined as the ratio of flow energy to the energy required to break the snow cluster into particles [13].…”

Section: Specific Flow Behavior Of Snow/water Slurry Flow In Pipesmentioning

confidence: 99%

Blocking of Snow/Water Slurry Flow in Pipeline Caused by Compression-Strengthening of Snow Column

Shirakashi¹,

Yamada

Kawada

et al. 2014

Sustainability

Self Cite

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Abstract:In earlier works by the present authors, two systems for sustainable energy were proposed: (i) a system for urban snow removal in winter and storage for air conditioning in summer, applied to Nagaoka City, which suffers heavy snow fall every winter, and (ii) a district cooling system utilizing latent heat of ice to reduce the size of storage reservoir and transportation pipeline system. In these systems, the hydraulic conveying of snow or ice through pump-and-pipeline is the key technique to be developed, since characteristics of snow (ice)/ water slurry is largely different from those of conventional non-cohesive solid particle slurries. In this study, the blocking of pipeline of snow/water slurry is investigated experimentally. While the blocking of conventional slurry occurs due to deposition of heavy particles at low flow velocity or arching of large rigid particles, that of snow/water slurry is caused by a compressed plug of snow formed due to cohesive nature of snow particles. This is because the strength of snow plug formed at a high resistance piping element, such as an orifice, becomes higher when the compression velocity is lower, resulting in a solid-like plug filling the whole channel upstream the element.

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“…In the grouting engineering field, there is a large difference for different flow patterns of slurry diffuse in the geotechnical engineering [25][26][27]. To meet the requirements of engineering, reasonable grouting parameters for different slurry must be determined.…”

Section: Penetration and Diffusion Lawmentioning

confidence: 99%

Study of the Penetration and Diffusion Characteristics of Inorganic Solidified Foam in Rock Fractures

Lü

Wang

2017

Advances in Materials Science and Engineering

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To explore the penetration and diffusion law in coal and rock fractures when inorganic solidified foam (ISF) is used to prevent coal fire, the penetration experiment was conducted; the results showed that the penetration pressure fluctuates within a certain range and decreases with the diffusion distance. In the plane, the diffusion pattern presents an ellipsoid shape, and the diffusion area becomes increasingly large over time; in the plane, the foam fluid penetration changes from dense to loose in the direction and it does not undergo downward penetration and diffuses via its own weight in the direction; in the plane, it is loose on the left and dense on the right. The viscosity of ISF was tested and then the time-varying formula was fitted. The formula of the effective diffusion radius for foam fluid diffusing in the fracture channel was determined theoretically. The permeability coefficient and other related parameters were calculated in terms of the penetration pressure and diffusion time of two monitoring points. At last, the prediction formula of effective diffusion distance of foam fluid was verified with the remaining seven monitoring points and all the relative error of monitoring is within 10%.

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Flow Patterns of Ice/Water Slurry in Horizontal Pipes

Cited by 6 publications

References 7 publications

A model for estimating flow assurance of hydrate slurry in pipelines

A model for estimating flow assurance of hydrate slurry in pipelines

Blocking of Snow/Water Slurry Flow in Pipeline Caused by Compression-Strengthening of Snow Column

Study of the Penetration and Diffusion Characteristics of Inorganic Solidified Foam in Rock Fractures

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