The granular pressure and granular temperature underpin various models of granular flows whilst they are playing an increasing role in modelling of other phenomena in granular systems such as heat transfer, segregation, erosion, attrition and aggregation. The development and validation of these theories demand experimental determination of these two quantities. Diffusing wave spectroscopy (DWS) is now an accepted technique for measurement of granular temperature in dense granular systems. Using the kinetic theory of granular flow expression, we have derived for the first time as far as we are aware the granular pressure from DWS data for a liquid fluidized bed. The determined variation of mean granular pressure with solid volume fraction is compared with previously published theoretical models and experimental data of others. Additionally, we report for the first time ever as far as we are aware the variation of the granular pressure with height above the distributor for several mean solids volume fractions.
|Title of host publication||Chemeca 2010: Engineering at the Edge; 26-29 September 2010, Hilton Adelaide, South Australia|
|Place of Publication||Barton, A.C.T.|
|Number of pages||10|
|Publication status||Published - 2010|