A new design approach for the established flow region of vertical,dilute-phase pneumatic conveyors
作者机构：European Powder and Process TechnologyLongfellow DriveKetteringUnited Kingdom KU LeuvenDepartment of Chemical EngineeringProcess and Environmental Technology LabJ.De Nayerlaan 52860 Sint-Katelijne-WaverBelgium Beijing University of Chemical TechnologyBeijing Advanced Centre of Smart Matter Science and EngineeringBeijingChina
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2022年第20卷第7期
页 面：10-20页
核心收录：
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0811[工学-控制科学与工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）]
基 金：This research did not receive any specific grant from funding agencies in the public commercial or not-for-profit sectors
主 题：Dilute-phase Vertical Pneumatic conveying Design equations Pressure drops
摘 要：An analysis has been completed for a comprehensive set of vertical,dilute-phase pneumatic conveying pressure drop data from an investigation by *** data were collected in the established flow region for eight different materials conveyed in 0.05-,0.10-,0.20-m internal diameter,20-m tall steel *** velocities derived from the pressure drop data were used to develop an equation of motion that includes terms for pipe diameter,terminal velocity,coefficient of restitution,and particle *** best data fit was achieved using the actual gas density and the actual gas velocity adjusted for *** the terminal velocity for voidage,an approach recommended by many investigators,did not improve the fit for reasons identified by the present *** the equation of motion,particle velocities were predicted and used to calculate total pressure drops that are within±15%of the measured *** calculated values also produce the characteristic trough-shaped total pressure drop curves allowing the minimum pressure drop gas velocity to be determined without recourse to a separate correlation.A comparison with other studies using shorter risers indicates that data from these studies likely include acceleration effects.A separate study will investigate this observation further.
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