Slump Flow Simulation of High Fluidity Concrete by MPS Method

Yamada, Yoshitomo; Uehara, Yoshiki; Sakihara, Kohei; Urano, Shinji

doi:10.3130/aijs.85.663

Cited by 6 publications

(1 citation statement)

References 9 publications

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“…Segregation Section. According to the model of the previous studies proposed [33][34][35][36][37], segregation of material occurred because the pressure force from the difference of fresh concrete caused the mortar flows from a highpressure area to low pressure area is used to simulate in this paper as shown as Figure 3.…”

Section: Poisson Equationmentioning

confidence: 99%

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

et al. 2022

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Grouting mortar has widespread application in engineering because of the advantages of good durability, low cost, and environmental friendliness. To study the flowing properties of grouting mortar, laboratory minislump tests taking different rheological parameters of grouting mortar into consideration were conducted to obtain the flow time and flow pattern of grouting mortar. A modified MPS method (moving-particle semi-implicit method) introduced two sections of Bingham rheological, and segregation was proposed. The effects of the plastic viscosity on the flow state of mortar were studied, and the relationship between the plastic viscosity and the flowing time was established. The numerical results show that the modified MPS method can be used to predict the flow time and flow pattern of mortar in the template, and plastic viscosity has a great influence on the flow time of concrete, and with the increase of plastic viscosity, the time to flow to the specified area also increases. Moreover, the analysis of the rheological parameters can provide the basis for the design of mix ratio in the construction practice.

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Section: Poisson Equationmentioning

confidence: 99%

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

et al. 2022

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Assessing sand sedimentation in drilling slurry using particle methods for ground excavation management

Nakao,

Morishita,

Miura

et al. 2024

Results in Engineering

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多相融体の流動特性評価とプロセスシミュレーション

Higuchi,

Shimasaki,

Ueda

et al. 2024

Tetsu-to-Hagane

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In the process of steelmaking refining, slag used in the preliminary treatment of molten iron or the converter is a multiphase melt. It contains solid particles that cannot dissolve entirely from the raw materials and gas bubbles generated through reactions, thus making it a multiphase molten material with dispersed components. The flow characteristics of the suspensions, foams, and emulsions significantly affect the separation of iron particles in the slag and the behavior of slag discharge. Multiphase melts typically behave as non-Newtonian fluids, so the evaluation, focusing on viscosity, is crucial to understanding their flow characteristics. This report reviews recent advances in slag visualization techniques for understanding the flow of multiphase molten materials. The results are as follows:Through studies of viscosity measurements of multiphase melts using rotational viscometers, falling-ball methods, and dam break methods in cold experiments with simulated slag and hightemperature experiments with slag compositions close to practical operation, it has been shown that the apparent viscosity increases with an increase in the volume fraction of solid particles and bubbles. The complex behaviors of the viscosity measurement values could have been reproduced with high precision using predictive models based on recent developments in machine learning. In terms of process evaluation, the application of mesh and mesh-free methods is advancing as methods of computational fluid dynamics (CFD) that take non-Newtonian behavior into account, providing valuable insights into evaluating slag discharge properties and more.

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Slump Flow Simulation of High Fluidity Concrete by MPS Method

Cited by 6 publications

References 9 publications

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

Assessing sand sedimentation in drilling slurry using particle methods for ground excavation management

多相融体の流動特性評価とプロセスシミュレーション

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