Relationship between the flow regime characteristics and pressure signal in dense phase pneumatic conveying

Abstract

In the present study, a series of tests were conducted on a purpose-built experimental setup to investigate the relationship between the pressure signal and flow regime in horizontal pneumatic conveying processes. The pressure signals and images of the material flow regime during the conveying process were collected and analyzed. Direct observation, power spectrum analysis, and discrete wavelet transform were employed in this work. The results show that as the conveying pressure increases, the time taken to reach the steady conveying stage is shorter. A correlation was discovered among the frequency intervals, pneumatic conveying stages, and flow regimes. The periodicity of the decomposed signal increases with decomposition scale.

Keywords:

• Flow regime
• pressure signal
• power spectrum analysis
• discrete wavelet transform

Acknowledgment

We would like to thank MogoEdit (https://www.mogoedit.com) for its English editing during the preparation of this manuscript.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work is gratefully acknowledged to have been supported by the National Natural Science Foundation of China (52275110), the Science & Technology Innovation Talents in Universities of Henan Province (24HASTIT044), the Key Program of Higher Education Institutions of Henan Province (23A460012), the Science and Technology Projects of Henan Province (232102220086, 222102220039), and the Innovative Research Team (in Science and Technology) in University of Henan Province (22IRTSTHN018).