• Vortex shedding patterns, their competition, and chaos in flow past inline oscillating rectangular cylinders 

  T, Srikanth; Dixit, Harish N; Tatavarti, Rao; Govindarajan, Rama (American Institute of Physics, 2011-07)

  The flow past inline oscillating rectangular cylinders is studied numerically at a Reynolds number representative of two-dimensional flow. A symmetric mode, known as S-II, consisting of a pair of oppositely signed vortices ...
• Stability of a vortex in radial density stratification: role of wave interactions 

  Dixit, Harish N; Govindarajan, Rama (Cambridge University Press, 2011-07)

  We study the stability of a vortex in an axisymmetric density distribution. It is shown that a light-cored vortex can be unstable in spite of the 'stable stratification' of density. Using a model flow consisting of step ...
• Global instabilities in diverging channel flows 

  Swaminathan, Gayathri; Sahu, Kirti Chandra; Sameen, A; Govindarajan, Rama (Springer, 2011-06)

  A global stability study of a divergent channel flow reveals features not obtained hitherto by making either the parallel or the weakly non-parallel (WNP) flow assumption. A divergent channel flow is chosen for this study ...
• Linear stability of double-diffusive two-fluid channel flow 

  Sahu, Kirti Chandra; Govindarajan, Rama (Cambridge University Press, 2011-11-10)

  Double-diffusive density stratified systems are well studied and have been shown to display a rich variety of instability behaviour. However double-diffusive systems where the inhomogeneities in solute concentration are ...
• Minimum energy shapes of one-side-pinned static drops on inclined surfaces 

  Thampi, Sumesh P; Govindarajan, Rama (American Physical Society, 2011-10-10)

  The shape that a liquid drop will assume when resting statically on a solid surface inclined to the horizontal is studied here in two dimensions. Earlier experimental and numerical studies yield multiple solutions primarily ...

View more