He Jicheng 3，Deng Xufan 4

（1．College of Information Science and Engineering；

2．Center of Food Safty and Hygiene of German；

3．College of M aterial and M etallurgy；

4．Industrial Explosion Protection Institute，Northeastern University，Liaoning Shenyang，110006）

Abstract

The particle velocity and root-mean-square（RMS）turbulence velocity on Hartmann bomb are measured and researched，the changing curve of particle velocity，RM S turbulence velocity at various positions are obtained．The particle velocity is measured by LaserDoppler-Anemometer．T he selection of RM S calculating window during laser measuring and data treating is also discussed．

Keywords：dust explosion；Hartmann bomb；root mean-square turbulence velocity

DOI：10.13732/j.issn.1008-5548.1999.04.004