Flooding correlation, Sherwood chart

Generalized correlations for Rood point prediction have been based ou the early wort of Sherwood et aL19 Modifications of this wort have been made from time to time, with that of Eckert,20 mentioned eartier in connection with pressure drop estimation, being representative of those now in tise. The flood line is designated as the top curve of Fig. 5-8-12. Thus, as for pressure drop, the Eckert chart enables a quick estimate of the maximum allowable vapor flow through the packed bed in question. 

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