Mukund, V.; Singh, D. K.; Ponnulakshmi, V. K.; Subramanian, Ganesh; Sreenivas, K. R.(Wiley-Blackwell, 2014)
Heat transfer processes in the nocturnal boundary layer (NBL) influence the surface energy budget and play an important role in many micrometeorological processes, including the formation of inversion layers, radiation-fog ...
Most classical work on the hydrodynamics of low-Reynolds-number swimming addresses deterministic locomotion in quiescent environments. Thermal fluctuations in fluids are known to lead to a Brownian loss of the swimming ...
Singh, Vikram; Koch, Donald L.; Subramanian, Ganesh; Stroock, Abraham D.(American Institute of Physics, 2014)
The motion of thin, torque-free axisymmetric rigid particles with fore-aft symmetry in low Reynolds number linear flows is investigated. The rotational motion of such a particle is fully determined by the effective aspect ...
In 1880 Lord Kelvin analysed the linearized inviscid oscillations of a Rankine vortex as part of a theory of vortex atoms. These eponymously named neutrally stable modes are, however, exceptional regular oscillations that ...
In this paper, we give a modal interpretation of the lift-up effect, one of two well-known mechanisms that lead to an algebraic instability in parallel shearing flows, the other being the Orr mechanism. To this end, we ...
Dabade, Vivekanand; Marath, Navaneeth K.; Subramanian, Ganesh(Cambridge University Press, 2016)
It is well known that, under inertialess conditions, the orientation vector of a torque-free neutrally buoyant spheroid in an ambient simple shear flow rotates along so-called Jeffery orbits, a one-parameter family of ...
Krishnamurthy, Deepak; Subramanian, Ganesh(Cambridge University Press, 2015)
Recent experiments have shown that suspensions of swimming micro-organisms are characterized by complex dynamics involving enhanced swimming speeds, large-scale correlated motions and enhanced diffusivities of embedded ...
Dabade, Vivekanand; Marath, Navaneeth K.; Subramanian, Ganesh(Cambridge University Press, 2015)
An axisymmetric particle sedimenting in an otherwise quiescent Newtonian fluid, in the Stokes regime, retains its initial orientation. For the special case of a spheroidal geometry, we examine analytically the effects of ...
Kasbaoui, M. Houssem; Koch, Donald L.; Subramanian, Ganesh; Desjardins, Olivier(Cambridge University Press, 2015)
We examine the linear stability of a homogeneous gas solid suspension of small Stokes number particles, with a moderate mass loading, subject to a simple shear flow. The modulation of the gravitational force exerted on the ...