Direct numerical simulations of gas-liquid multiphase flows

Accurately predicting the behaviour of multiphase flows is a problem of immense industrial and scientific interest. Modern computers can now study the dynamics in great detail and these simulations yield unprecedented insight. This book provides a comprehensive introduction to direct numerical simulations of multiphase flows for researchers and graduate students. After a brief overview of the context and history the authors review the governing equations. A particular emphasis is placed on the 'one-fluid' formulation where a single set of equations is used to describe the entire flow field and interface terms are included as singularity distributions. Several applications are discussed, showing how direct numerical simulations have helped researchers advance both our understanding and our ability to make predictions. The final chapter gives an overview of recent studies of flows with relatively complex physics, such as mass transfer and chemical reactions, solidification and boiling, and includes extensive references to current work.

Preface; 1. Introduction; 2. Fluid mechanics with interfaces; 3. Numerical solutions of the Navier-Stokes equations; 4. Advecting a fluid interface; 5. The volume-of-fluid method; 6. Advecting marker points -- front tracking; 7. Surface tension; 8. Disperse bubbly flows; 9. Atomization and breakup; 10. Droplet collision, impact and splashing; 11. Extensions; Appendix A. Interfaces: description and definitions; Appendix B. Distributions on the interface; Appendix C. Cube-chopping; Appendix D. Dynamics of liquid sheets; Bibliography; Index.