Jets & Wakes

Researchers

Topics of Interest

During the last ten years, one of the research lines of the Fluid Mechanics Group is concerned with the structure and stability properties of jets and wakes in technologically relevant contexts. Some of the problems addressed include:

Structure and stability of submerged jets at high Reynolds numbers

  • A. Revuelta, A. L. Sánchez and A. Liñán, "Confined Axisymmetric Laminar Jets with Large Expansion Ratios", J. Fluid Mech. 456, 319–352 (2002).
  • A. Revuelta, A. L. Sánchez and A. Liñán, "The Virtual Origin as a First-Order Correction for the Far-Field Description of Laminar Jets", Phys. Fluids 14, 1821–1824 (2002).
  • A. Sevilla, J. M. Gordillo, C. Martínez-Bazán, "The Effect of the Diameter Ratio on the Absolute and Convective Instability of Free Coflowing Jets", Phys. Fluids 14, 3028-3038 (2002).
  • A. Revuelta, C. Martínez-Bazán, A. L. Sánchez and A. Liñán, "Laminar Craya-Curtet Jets", Phys. Fluids 16, 208–211 (2004).
  • A. Revuelta, A. L. Sánchez and A. Liñán, "The Quasi-Cylindrical Description of Submerged Laminar Swirling Jets", Phys. Fluids 16, 848–851 (2004).
  • A. Revuelta, A. L. Sánchez and A. Liñán, "Confined Swirling Jets with Large Expansion Ratios", J. Fluid Mech. 508, 89–98 (2004).
  • I. Iglesias, M. Vera, A. L. Sánchez, A. Liñán, "Simulations of Starting Gas Jets at Low Mach Numbers", Phys. Fluids 17, 038105 (2005).
  • M. Sánchez-Sanz, A. L. Sánchez, A. Liñán, "Fronts in High-Temperature Laminar Gas Jets" J. Fluid Mech. 547, 257 - 266 (2006).
  • A. L. Sánchez, M. Vera, A. Liñán, "Exact Solutions for Transient Mixing of Two Gases of Different Density", Phys. Fluids 18, 078102 (2006).
  • W. Coenen, A. Sevilla, A. L. Sánchez, "Absolute Instability of Light Jets Emerging from Circular Injector Tubes", Phys. Fluids 20, 074104 (2008).
  • M. Sánchez-Sanz, M. Rosales, A. L. Sánchez, "The Hydrogen Laminar Jet", Int. J. Hydrogen Energy 35, 39193927 (2010).
  • M. Sánchez-Sanz, A. L. Sánchez, A. Liñán, "Variable-density jet flows induced by concentrated sources of momentum and energy", Theor. Comput. Fluid Dyn., in press (2011).
  • J. Arrieta-Sanagustín, A. L. Sánchez, A. Liñán, F. A. Williams, "Sheath vaporization of a monodisperse fuel-spray jet", J. Fluid Mech., in press (2011).
Stability and base bleed control of wakes past aerodynamic blunt-based bodies

  • A. Sevilla, C. Martínez-Bazán, "Vortex Shedding in High Reynolds Number, Axisymmetric Bluff-Body Wakes: Local Linear Instability and Global Bleed Control", Phys. Fluids 16, 3460-3469 (2004).
  • A. Sevilla, C. Martínez-Bazán, "A Note on the Stabilization of Bluff-Body Wakes by Low Density Base Bleed", Phys. Fluids 18, 098102 (2006).
  • E. Sanmiguel-Rojas, A. Sevilla, C. Martínez-Bazán, J.-M. Chomaz, "Global Mode Analysis of Axisymmetric Bluff-Body Wakes: Stabilization by Base Bleed", Phys. Fluids 21, 114102 (2009).
  • P. Bohórquez, E. Sanmiguel-Rojas, A. Sevilla, J.I. Jiménez-González, C. Martínez-Bazán, "Stability and Dynamics of the Laminar Wake past a Slender Blunt-based Axisymmetric Body", J. Fluid Mech., in press (2011).