Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer最新文献_第2页

Effect Of Drag Models In Two-Phase Solid-Gas Particles Ceria-Nitrogen: A Hydrodynamic Study Of The Fluidized Bed Reactor 两相固气颗粒铈氮中阻力模型的影响:流化床反应器的流体动力学研究

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/icmfht21.lx.302

Priyanka Swarnkar, T. Sundararajan

{"title":"Effect Of Drag Models In Two-Phase Solid-Gas Particles Ceria-Nitrogen: A Hydrodynamic Study Of The Fluidized Bed Reactor","authors":"Priyanka Swarnkar, T. Sundararajan","doi":"10.11159/icmfht21.lx.302","DOIUrl":"https://doi.org/10.11159/icmfht21.lx.302","url":null,"abstract":"- A two-dimensional solid-gas ceria-nitrogen fluidized bed reactor (FBR) used for the thermochemical water splitting process was considered to study the bed hydrodynamics of ceria particles with sphericity 1. Ansys Fluent v19.0 was used for simulation. The numerical model for FBR is validated against the experiment and simulation results conducted with the spherical glass beads of particles size 275 µm from the available literature based on the multi-fluid Eulerian-Eulerian model integrated with the solid particle kinetic theory approach. The simulation results of pressure drop, and simulation and experimental results from the literature for instantaneous voidage and time mean voidage predictions compares well with the literature. The solid-gas ceria-nitrogen with the particle diameter 300 µm was considered for the hydrodynamic study. The effect of different drag models on the expanded bed height was studied. Different drag models Huilin–Gidaspow, Wen-Yu, Syamlal O’Brien, Syamlal O’Brien Para and Gidaspow with the restitution co-efficient of 0.90 were initially used to identify the most appropriate drag model. The simulation results based on different drag models at a fluidization velocity of 0.72 m/s shows that the Syamlal O-Brien will be the most appropriate drag model to study the bed hydrodynamics as it minimizes the overprediction. Then rest of the study was carried out for a range of fluidization velocity 0.24, 0.48, 0.72, 0.96, 1.2, and 1.44 m/s with the Syamlal-O’Brien drag model.","PeriodicalId":261334,"journal":{"name":"Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122775589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Red Blood Cells Mimics Production in a Flow Focus Device with Rectangular Cross Section 红细胞模拟生产的流动聚焦装置与矩形横截面

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/icmfht21.lx.305

A. I. Moreira, J. Carneiro, J. Campos, J. Miranda

引用次数: 0

Analysis of the Effect of Viscosity in an Electric Submersible Pump(Esp) Through A CFD Approach 基于CFD方法的电潜泵(Esp)粘度影响分析

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/icmfht21.lx.203

J. Garcia, N. Ratkovich

引用次数: 0

Numerical Simulation Study on the Effects of Diatomic Gas Addition on Soot and Its Precursors in Acetylene Premixed Flame 乙炔预混火焰中双原子气体加入对烟尘及其前体影响的数值模拟研究

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/csp21.lx.104

H. O. Ali, M. Athar, T. Hassan, Faheem Hasnain, M. Ghouri

引用次数: 0

Rate Constants of the Dimerization of PAH Molecules: A Theoretical Study 多环芳烃分子二聚化速率常数的理论研究

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/csp21.lx.101

A. S. Savchenkova, A. S. Semenikhin, I. V. Chechet, M. Frenklach, A. M. Mebel

引用次数: 0

A Study of Segregation Behaviour with Rotation Speed in a Double-Walled Rotating Drum 双壁转鼓中偏析行为随转速变化的研究

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/icmfht21.lx.108

S. Chou, S. Hsiau

引用次数: 0

Numerical Modelling and Analysis ofa Microfluidic PCR Device 微流控PCR装置的数值模拟与分析

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/enfht21.lx.201

Foteini Zagklavara, P. Jimack, N. Kapur, O. Querin, H. Thompson

引用次数: 1

Numerical Approaches to Industrial Flow Optimization 工业流程优化的数值方法

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/enfht21.lx.001

H. Thompson

引用次数: 0

Decarbonized Combustion: Research Needs for Zero Pollution 脱碳燃烧:零污染的研究需求

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/csp21.lx.002

Y. Hardalupas

引用次数: 0

Puffing/Micro-explosion in Composite Mono-and Multi-component Droplets: Experimental Results and Modelling 单组分和多组分复合液滴的膨化/微爆炸:实验结果和模型

Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer Pub Date : 2021-06-01 DOI: 10.11159/csp21.lx.303

R. Fedorenko, D. Antonov, P. Strizhak, E. Shchepakina, V. Sobolev, S. Sazhin

{"title":"Puffing/Micro-explosion in Composite Mono-and Multi-component Droplets: Experimental Results and Modelling","authors":"R. Fedorenko, D. Antonov, P. Strizhak, E. Shchepakina, V. Sobolev, S. Sazhin","doi":"10.11159/csp21.lx.303","DOIUrl":"https://doi.org/10.11159/csp21.lx.303","url":null,"abstract":"Extended Abstract The results of recent experimental studies of puffing and micro-explosion and modelling approaches to their analysis are summarised. In [1] the analysis was focused on non-mixed and premixed Diesel fuel/water and rapeseed oil/water droplets. Air temperature was in the range 850–1100°C, and initial droplet radii were in the range 0.62–1.34 mm. It was shown that the time to puffing/micro-explosion decreases with increasing temperature, is weakly dependent upon the volume fraction of fuel, and increases with increasing droplet sizes. The analysis described in [2] focused on detailed experimental investigation of puffing and micro-explosions in composite water/rapeseed oil droplets in the presence of lignite and bituminous coal micro-particles in water. Droplets with radii in the range 1–2 mm were placed in a hot chamber with air velocities 3–7 m/s and temperatures up to 600°C. The time to puffing/micro-explosion and average radii of child droplets generated during puffing and micro-explosions were shown to decrease with increasing gas temperature. The above-mentioned experimental results","PeriodicalId":261334,"journal":{"name":"Proceedings of the 6th World Congress on Momentum, Heat and Mass Transfer","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125118751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1