Abstract
Dense phase pneumatic conveying is preferred by industry over dilute phase flow due to its advantages. Models enabling to calculate pressure drop are worthless for a designer if he is unable to predict in advance the mode of conveying. Therefore, this research is focused on developing a new flow regime chart. Based on hundreds of experiments all required threshold velocities are defined by Reynolds number as a simple power function of Archimedes number. This work, revealed two new kind of plugs unknown before. Using the threshold functions a new flow regime chart was plotted By comparing the results to previously published models characterizing only the material properties revealed that the feeder is probably have a major role controlling the final mode of flow. Taking into account the findings in this paper, one might have ideas of how to improve the feeders in order to fully fulfill the flow potential.
Original language | English |
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Article number | 115256 |
Journal | Chemical Engineering Science |
Volume | 211 |
DOIs | |
State | Published - 16 Jan 2020 |
Keywords
- Dilute phase flow
- Dune flow
- Flow regime chart
- Plug flow
- Pneumatic conveying
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- Industrial and Manufacturing Engineering