96/01921 Reduction behavior of fine iron oxide by injection of mixture of pulverized coal char and iron ore

• Publisher: Elsevier Science
• Year: 1996
• Weight: 163 KB
• Volume: 37
• Category: Article
• ISSN: 0140-6701
• DOI: 10.1016/s0140-6701(96)93592-4

✦ Synopsis

Flow visualization and heat transfer measurementa were made for a turbulent channel flow obstructed with an inserted square rod. The space between the square rod and the duct wall was changed in five steps. Intcrmittent dye injection method was introduced to visualize the Karman vortex shed from the rod and to track its motion. Hydrogen bubble method was combined to visualize the near-wall flow. The results reveal that the Karman vortex shows c&s-cross motion, even when the rod is placed off the centre plane. The vortex moves at a speed equal to the cross-sectional averaged velocity.