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Voidage correction method for DEM study of 3D pebble flows in a bed of cycloidal base: 《Particuology》2024年第10期30-40,共11页Zirui Xia Minglei Shi Quan Zou Nan Gui Xingtuan Yang Jiyuan Tu Shengyao Jiang; support by the National Science and Technology Major Project(grant No.2011zx06901-003);the fund of the Nuclear Power Technology Innovation Centre(grant No.HDLCXZX-2021-ZH-024).; Voidage(porosity or void fraction)in packed particles(or pebbles)is of fundamental importance in calculating the pressure drop,obtaining the drag,predicting the bed permeability,estimating the neutron streaming,etc.Fo...; 关键词：VOIDAGE Pebbleflow Packed bed Discreteelementmethod Cycloidal base KD-TREE Volume correction

Temperature influence on minimum fluidization velocity:Complexity,mechanism,and solutions被引量：1: 《Particuology》2024年第5期344-349,共6页Qingjin Zhang Liangliang Fu Guangwen Xu Dingrong Bai; supported by the National Natural Science Foundation of China(grant No.U22A20410).; Fluidized-bed reactors are widely employed in various high-temperature industrial processes.Thus,it is crucial to understand the temperature effect on various fluidization phenomena,specifically the minimum fluidizati...; 关键词：High-temperature gas-solids fluidized beds Minimum fluidization velocity Hydrodynamic forces Interparticle forces Bed voidage

Study on force chain evolution of rice straw with different length during vibrational compression: 《Particuology》2024年第2期310-322,共13页Han Tang Wenlong Xu Guixuan Zhu Changsu Xu Jinwu Wang; supported by the National Key Research and Development Program of China(grant number:2022YFD2300303);the National Natural Science Foundation of China(grant number:32071910);Industrial Technology System of National Rice(grant number:CARS-01-48).; This paper explores the mechanism of force chain evolution and voidage change under vibrational and non-vibrational compression conditions of rice straw of different lengths.Simulations were used to explore the force ...; 关键词：Straw compression VOIDAGE Discrete element method Mechanical properties Force chain transmission

Hydrodynamic characteristics of a rectangular gas-driven inverse liquid-solid fluidized bed: 《Particuology》2023年第7期86-96,共11页Yicheng Deng Keying Ma jaqi Huang Yuanyuan Shao Jesse Zhu; The hydrodynamic characteristics of a rectangular gas-driven inverse liquid-solid fluidized bed(GDFB)using particles of different diameters and densities were investigated in detail.Rising gas bubbles cause a liquid u...; 关键词：Gas-driven Inverse fluidized bed Flow regime Average particle velocity Liquid circulation velocity Bed voidage

Effect of elevated temperature and silica sand particle size on minimum fluidization velocity in an atmospheric bubbling fluidized bed被引量：4: 《Chinese Journal of Chemical Engineering》2020年第12期2985-2992,共8页A.Al-Farraji Haidar Taofeeq; The impact of temperature and particle size on minimumfluidizing velocity was studied and analyzed in a small pilot scale of bubbling fluidized bed reactor.This study was devoted to providing some data about fluidizat...; 关键词：Minimum fluidization velocity VOIDAGE Elevated temperature Silica sand Fluidized bed Bed height

Direct calculation of voidage in the fine-grid CFD-DEM simulation of fluidized beds with large particles: 《Particuology》2018年第5期23-33,共11页Lihua Wang Jie Ouyang Chuntao Jiang; Voidage is important in determining the hydrodynamic behavior of a fluidized bed and estimating the drag force,Exact calculation methods are limited,especially in terms of determining the intersection bf a particle an...; 关键词：VOIDAGE Direct calculation COMPUTATIONAL fluid dynamics-discrete ELEMENT method Fluidized BEDS

Voidage Measurement of Air-Water Two-phase Flow Based on ERT Sensor and Data Mining Technology: 《Chinese Journal of Chemical Engineering》2012年第2期400-405,共6页王保良孟振振黄志尧冀海峰李海青; Supported by the National Natural Science Foundation of China (60972138); Based on an electrical resistance tomography(ERT) sensor and the data mining technology,a new voidage measurement method is proposed for air-water two-phase flow.The data mining technology used in this work is a least...; 关键词：two-phase flow voidage measurement electrical resistance tomography sensor data mining feature extraction

Numerical and Experimental Investigation on Heat PropagationThrough Composite Sinter Bed With Non-Uniform Voidage:Part Ⅱ Prediction of Process Efficiency: 《Journal of Iron and Steel Research International》2010年第11期1-6,共6页Sergey V Komarov Hiroyuki Shibata Naohito Hayashi Eiki Kasai; The results of numerical simulation of the mosaic embedding iron ore sintering （MEBIOS） process according to the model presented in the first part of the study are introduced. The main objective of the second part i...; 关键词：sintering MEBIOS process heat propagation mechanism numerical simulation process efficiency

Numerical and Experimental Investigation on Heat Propagation Through Composite Sinter Bed With Non-Uniform Voidage:Part Ⅰ Mathematical Model and Its Experimental Verification被引量：5: 《Journal of Iron and Steel Research International》2010年第10期1-7,共7页Sergey V Komarov Hiroyuki Shibata Naohito Hayashi Eiki Kasai; The mechanisms of heat transfer through the sinter beds of the MEBIOS process are discussed and their comprehensive mathematical model is proposed. The MEBIOS process, the concept of which has been proposed ear- lier ...; 关键词：sintering MEBIOS process heat propagation mathematical model experimental verification

Discrete element method modeling of corn-shaped particle flow in rectangular hopper: 《Frontiers of Structural and Civil Engineering》2010年第2期267-275,共9页He TAO Baosheng JIN Wenqi ZHONG Xiaofang WANG; This work was supported by the National Natural Science Foundation of China(Grant Nos.50706007 and 50976025);National Key Program of Basic Research in China(No.2010CB732206);the Foundation of Excellent Young Scholar of Southeast University(4003001039).; Discrete element method(DEM)was developed to simulate the corn-shaped particles flow in the hopper.The corn-shaped particle was described by four overlapping spheres.Contact force and gravity force were considered whe...; 关键词：discrete element method(DEM) nonspherical VOIDAGE pressure velocity distribution HOPPER

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