Gas-solid particles two-phase flow theory and its application in the investigation of implosion phenomena

Gas-solid particles two-phase flow theory is introduced in this paper to investigate implosion phenomena, and considered to be the mixture of a gas and pseudofluid of solid particles. Thus, a physical model of implosion phenomena is given, and a mathematical model is made based on the given physical model. Furthermore, the finite control volume method is employed in the numerical procedure, and pressure, phase fraction correction equations are given. Besides, a new drag coefficient formula, based on experiments and the consideration of influences of particle volume fraction, is introduced in this paper. A program is made, and calculations to simulate a typical implosion phenomenon under various conditions are performed, that is, the implosion of a hollow body in a high pressure chamber. The results of these calculations are analyzed. It is shown that the result of this research work is not confined to investigate implosion phenomena, it can be employed even in investigation of the multiphase transportation, sedimentation phenomena and so on. (orig.)Available from TIB Hannover: RA 3251(95/E/5) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman