Numerical Study on Concrete Pumping Behavior via Local Flow

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  • Numerical Study on Concrete Pumping Behavior via Local Flow …

    Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method Yijian Zhan 1,* ID, Jian Gong 1,*, Yulin Huang 1,*, Chong Shi 2 ID, Zibo Zuo 1 and Yiqun Chen 3 1 General Engineering Institute of Shanghai Construction

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  • [PDF] Numerical Study on Concrete Pumping Behavior via …

    To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed.

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  • Numerical Study on Heat Transfer and Flow …

    27/2/2018 · This study investigated the heat transfer and flow characteristics of one kind of swirl generator in a circular heat exchanger tube through a numerical simulation. The swirl flow induced by this type of swirl generator can obtain a high heat transfer rate with minimal pressure drop penalty. The simulations were carried out to understand the physical behavior of this kind of mesoscale heat

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  • Materials | Free Full-Text | Numerical Study on Concrete …

    Zhan Y, Gong J, Huang Y, Shi C, Zuo Z, Chen Y. Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method. Materials . 2019; 12(9):1415. https://doi.org/10.3390/ma12091415

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  • Numerical Investigation of Water Hammer due to …

    2/6/2021 · In the present study, transient flow in pipeline systems, including a group of parallel pumps, is investigated. For this purpose, the water hammer caused by the change in the operating status of the pump group simulated using a numerical method based on the MacCormack finite difference scheme and the behavior of the system in different patterns of starting up, shutting down of the pumps are

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  • Numerical Study on Concrete Pumping Behavior via Local …

    To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed.

    GET A QUOTE
  • Numerical Study of Off-Design Centrifugal Compressor …

    30/8/2018 · The numerical test domain consisted of blower, volute, inlet nozzle and elements of inlet and outlet channels assuring no influence of the boundary conditions on the local flow fluctuations. The analysis of the results included many factors such as: flow in the volute, flow in the impeller, flow in the diffuser and stagnation zones.

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  • Effect of lubrication layer on velocity profile of concrete …

    22/1/2015 · The pumping parameters of fresh concrete are determined by the steel–concrete interface shear stress (called boundary layer) that occurs during the concrete flow through a pumping pipe. This friction depends on the properties of the formed boundary layer (composition and thickness), and shows a relationship with the concrete mix design.

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  • Metrology Needs for Predicting Concrete Pumpability

    22/6/2015 · 2.2. Slip-Layer Several research groups have investigated the slip-layer of concrete flow in a pipe. Choi et al. [5, 6] measured the thickness of the slip-layer using an Ultrasonic Velocity Profiler (UVP) in pumping circuits using industrial equipment and found that there is a 2 mm thick layer along the inner surface of the pipe.

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  • 1. Introduction

    In this paper, the local pumping test was selected for DEM simulation to study the flow behavior of concrete in the process of passing through the bend pipe. The pumping concrete model based on DEM with detailed configuration is shown in Figure 16.

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  • Numerical Study on the Response of Tip Leakage Flow …

    10/3/2009 · A numerical study on the unsteady tip leakage flow with discrete micro tip injection from casing shroud in a low-speed isolated axial compressor rotor is presented. The main target is to clarify the flow mechanism of how the stall control measures act on the tip leakage flow typified by its self-induced unsteady flow characteristics.

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  • Дисертації: "Pumping rate" – Grafiati

    The method of this study is applied to pumping estimation at Hsichou of Jhuoshuei river alluvial fan .The amount of local pumping at Hsichou(1) shows 4457 ton/day of agricultural pumping and with 7.96cm drawdown, 1730 ton/day of charge-saving pumping A and

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  • Numerical Study on Concrete Pumping Behavior via …

    To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed.

    GET A QUOTE
  • Numerical Simulation of Working Characteristics of Concrete …

    [11] Yijian,Zhan,Jian,et al.Numerical Study on Concrete Pumping Behavior via Local Flow SimulationwithDiscreteElementMethod.[J].Materials(Basel,Switzerland),2019. [12] Mechtcherine V,Gram A, Krenzer K,et al.Simulation of fresh concrete flow using Discrete

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  • Numerical Study on Heat Transfer and Flow …

    27/2/2018 · This study investigated the heat transfer and flow characteristics of one kind of swirl generator in a circular heat exchanger tube through a numerical simulation. The swirl flow induced by this type of swirl generator can obtain a high heat transfer rate with minimal pressure drop penalty. The simulations were carried out to understand the physical behavior of this kind of mesoscale heat

    GET A QUOTE
  • Formation of lubricating layer and flow type during …

    30/7/2018 · Flow type is defined at low flow rates. • Pumping pressure estimated using rheological tools is verified on laboratory scale. Experimental and numerical study on pumpability of concrete using Sliding Pipe Rheometer and ANSYS Fluent Master thesis (2012)

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  • Numerical study on the erosion process of the low …

    15/6/2020 · Numerical simulation of concrete pumping process and investigation of wear mechanism of the piping wall Tribol. Int., 46 Numerical simulation of temperature effect on particles behavior via electrostatic precipitators Appl. Therm. Eng., 88 (2015), pp. 127-139

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  • Materials | Free Full-Text | Numerical Study on Concrete …

    30/4/2019 · Mechanical Properties and Seismic Performance of Wood-Concrete Composite Blocks for Building Construction Previous Article in Journal Study of the Structural and Magnetic Properties of Co-Substituted Ba 2 Mg 2 Fe 12 O 22 Hexaferrites Synthesized by Sonochemical Co-Precipitation

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  • Overview on the truck mounted concrete boom pump: a …

    1/1/2011 · This numerical model can simulate the typical operating condition of concrete pump booms. 4.THE CONCRETE PUMPING UNIT ( y O x ) . Thanks to the assumption of planar motion, each j j j FEM node is described by a vector, d independent coordinates jk, with three the vector ( x, y, ) .

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  • How affect the pipe length of pumping circuit on …

    Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method Article Full-text available Apr 2019 Yijian Zhan Jian Gong Yulin Huang Yiqun Chen

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