Empirical analysis of eccentric flow registered by the DPIV technique inside a silo model

In this paper we continue empirical description of eccentric granular flow registered by the DPIV (Digital Particle Image Velocimetry) technique. The first results concerning eccentric flow with the outlet located on the right were published in Sielamowicz et al. [30]. Here we present a methodology of empirical descriptions of velocities, flow rate and the flow channel boundary (FCB) in another eccentric case. The analysis is based on the experimental results (velocity profiles) obtained in the DPIV technique. Statistical analysis of the experimental results was also performed. We show how to fit the proper type of function to describe flow parameters in the silo model. The presented methodology is universal and can be applied in any case of eccentric flow of any granular material.

Graphical abstractA detailed methodology of empirical descriptions of velocities, flow rate and the flow channel boundary (FCB) in the eccentric case is presented. The analysis is based on the experimental results (velocity profiles) obtained in the DPIV technique. Statistical analysis of the experimental results how to fit the proper type of function to describe flow parameters in the silo model is shown.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Empirical description of flow parameters in silo. ► Eccentric filling-discharge. ► Empirical functions and multiple regression.