化工进展2017，Vol.36Issue(12)：4350-4355,6.DOI:10.16085/j.issn.1000-6613.2016-2459
气固两相流固相浓度与流速的测量及可视化
Measurement and visualization of concentration and velocity of solid phase in the gas-solid two- phase flow
摘要
Abstract
Measurement of the solid phase flow rate in the gas-solid two-phase flow is one of the difficulties in test realm. In order to realize visualization measurement of gas-solid two phase flow, the principle of electrical capacitance tomography was stated and a gas-solid two phase flow test-bed was developed. Polypropylene particles and air were selected as the solid phase and gas phase. Solid phase relied on their own gravity flow through experimental device. M3C capacitance tomography device of ITS company was used for the test and research on solid phase concentration, speed and mass flow rate in the gas-solid two phase flow. In the experiment,concentration measurement was based on the dielectric constant distribution of the pixels about image. Capacitive sensor with double layer structure was used to measure velocity. The relevant principles of the speed measurement was used to compute the correlation between upstream and downstream of sensor imaging pixel. Finally, the mass flow was calculated by the measured velocity and concentration distributions. The mass flow measurements were compared with the results of gravity sensor. The results showed good agreement with measurement error of less than 10%. The experimental results indicated that the capacitance tomography system can be used to measure the parameters of gas-solid two phase flow.关键词
成像/两相流/流动/质量流量/固相浓度/浓度/体积流量Key words
image/two-phase flow/flow/mass flow/solid concentration/concentration/volume flow分类
信息技术与安全科学引用本文复制引用
田海军,周云龙,赵晓明..气固两相流固相浓度与流速的测量及可视化[J].化工进展,2017,36(12):4350-4355,6.基金项目
国家自然科学基金项目(51276033). （51276033）
