Abstract
The influence of different lance lengths and diameters is studied experimentally on the upstream and downstream flow properties of gas such as stagnation and static pressure and the Mach numbers. Experimental results are presented and discussed in terms of the theory of compressible flow of gas for irreversible process of acceleration. The characteristic features of the above process of acceleration, i.e., loss in stagnation pressure, condition for choking and upstream static pressure are confirmed by the results obtained in this study. The implications of the above finding are discussed in relation to the design of lances for submerged gas injection practice.
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