Gas-solid flow behavior in a horizontal pipe after a 90 degrees vertical-to-horizontal elbow

Akilli H., LEVY E., Sahin B.

POWDER TECHNOLOGY, vol.116, no.1, pp.43-52, 2001 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 116 Issue: 1
  • Publication Date: 2001
  • Doi Number: 10.1016/s0032-5910(00)00360-0
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.43-52


The characteristics of the particle flow in a horizontal pipe following a 90 degrees vertical-to-horizontal elbow were investigated both numerically and experimentally. Laboratory experiments were conducted in a 0.154 m LD test section. The effects of air velocity, the ratio of air-to-solids mass flow rate, geometry of the elbow and inlet conditions on gas-solid flow patterns were investigated experimentally. Pulverized coal with a mean particle diameter of 50 mum was used as the solid material. Experiments were performed with conveying air velocities ranging from 15 to 30 m/s and air-to-solids mass flow rate ratios of 1 and 3, with elbows having bend radius to pipe diameter ratios of 1.5 and 3.