Numerical and experimental study of an innovative pipeline design in a granular pneumatic-conveying system--颗粒学报PARTICUOLOGY

Ghafori, H., & Ebrahimi, H. R. (2018). Numerical and experimental study of an innovative pipeline design in a granular pneumatic-conveying system. Particuology, 38, 196-203. https://doi.org/10.1016/j.partic.2017.07.007

Numerical and experimental study of an innovative pipeline design in a granular pneumatic-conveying system

Hasan Ghafori ^a *, Hamid Reza Ebrahimi ^b

a Department of Mechanical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran
b Department of Chemical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran

10.1016/j.partic.2017.07.007

Volume 38, June 2018, Pages 196-203

Received 29 May 2017, Revised 22 June 2017, Accepted 12 July 2017, Available online 24 November 2017, Version of Record 2 April 2018.

E-mail: h.ghafori@iaumajlesi.ac.ir

Highlights

• A new technique using additional air to decrease pressure drop in pipeline was proposed.

• The gas–solid flow patterns and pressure drop were determined numerically and experimentally.

• Pressure drop for conveying corn in proposed pipeline was 4% less than in a flexible pipe.

Abstract

During gas–solid mixture conveying in a dense phase, material is conveyed in dunes on the bottom of the pipeline, or as a pulsating moving bed. This phenomenon increases the pressure drop and power consumption. We introduce a new technique to reduce the pressure drop, which is termed the perforated double tube. To validate this new model, the gas–solid flow pattern and pressure drop were studied numerically and experimentally. The power consumption was also studied experimentally. Numerical studies were performed by the Eulerian–Lagrangian approach to predict gas and particle movement in the pipeline. Comparisons between the numerical predictions and the experimental results for the gas–solid flow patterns and pressure drop show good agreement.

Graphical abstract

Keywords

Computational fluid dynamics; Power consumption; Perforated double tube; Pneumatic conveying

文章导读