Download Hydrodynamics and Transport Processes of Inverse Bubbly Flow by Subrata Kumar Majumder PDF

By Subrata Kumar Majumder

Hydrodynamics and shipping procedures of Inverse Bubbly circulate provides the technology and basics at the back of hydrodynamic features, together with circulation regimes, fuel entrainment, strain drop, holdup and combining features, bubble measurement distribution, and the interfacial zone of inverse bubble move regimes. exact recognition is given to mass and warmth transfer.

This booklet is an essential reference for researchers in academia and operating in chemical and biochemical engineering. Hydrodynamics and delivery techniques of Inverse Bubbly circulation helps facilitate a greater knowing of the phenomena of multiphase circulation platforms as utilized in chemical and biochemical industries.

  • A first ebook available in the market devoted to the hydrodynamics of inverse bubbly flows
  • Includes basics of traditional and inverse bubble columns for various hydrodynamic parameters
  • Includes concepts for destiny functions of bubble flows

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B) Transition. (C) Plug (slug). (D) Churnintermittent. (E) Semi-plug. (F) Dispersed. (G) Annular. (H) Falling film. Chapter 2 • Flow Regime and Its Transition 31 to move toward the center of the pipe and the larger slower moving ones tend to move near the wall. They observed the intermittent flow pattern in which there are alternating vapor and liquid packets. They found plug flow (sometimes called slug flow) in which large ­Taylor plugs of gas are formed. They reported that these gas bubbles with hemispherical caps nearly filled the entire tube and moved upward with respect to the liquid, but the drag and viscous forces were always sufficient to give them a net inverse velocity.

Also, the rate of exchange of mass, energy, and momentum between vapor and liquid depends on the extent of interfacial area per unit volume and hence is dependent on the flow regime. 2 Generalized Effects of Various Parameters on Flow Regime Transition Variables Effect on Flow Regime Transition Pressure In general, an increase in pressure results in an increase Krishna et al. (1991); Wilkinson et al. (1992); Reilly et al. (1994); Lin et al. in transition velocity. (1999); Shaikh and Al-Dahhn (2005) An increase in temperature increases the transition Bukur et al.

Chapter 2 • Flow Regime and Its Transition 45 its high kinetic energy produces the heterogeneous flow of bubbles in an inverse flow bubble column (Majumder, 2005). Effect of Column Size The dimension of the bubble apparatus on the flow regime is also important for its scale up and design. These dimensions include the diameter of the column (dc), unaerated liquid height or so-called column height (H), and aspect ratio (H/dc). , 1997) for homogeneous operation of a bubble column reactor. Ruzicka et al.

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