In this work, the scale-up methodology of He et al. (1997) that is based on maintaining similar or close dimensionless groups in gas–solid spouted beds has been evaluated. Two geometrically similar spouted beds of 0.152m and 0.076m diameter have been used. It has been demonstrated experimentally, that there is non-similarity in the local hydrodynamic parameters such as solids holdup and dimensionless solids velocity, when all the dimensionless groups have been matched or close to each other in the two studied spouted beds. This confirms that the global hydrodynamic parameters should not be used to confirm the validity of or to evaluate the dimensionless groups scale-up based methodologies.

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spouted global hydrodynamic parameters scaleup methodology dimensionless groups scaleup based methodologies dimensionless solids

Muthanna Al-Dahhan,Shreekanta Aradhya, Haidar Taofeeq,.Evaluation of the dimensionless groups based scale-up of gas–solid spouted beds. 94 (0),209-218.

Muthanna Al-Dahhan,Shreekanta Aradhya, Haidar Taofeeq,"Evaluation of the dimensionless groups based scale-up of gas–solid spouted beds" 94

Muthanna Al-Dahhan,Shreekanta Aradhya, Haidar Taofeeq,"Evaluation of the dimensionless groups based scale-up of gas–solid spouted beds"