295 citations · 3.9k across the 116 of their papers we have counts for
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Bistability and chaos in Taylor-Green dynamo
Rakesh Yadav, Mahendra K. Verma, Pankaj Wahi
Using direct numerical simulations we study dynamo action under the Taylor-Green forcing with Prandtl number less than one. We observe bistability with a weak magnetic field branch…
Dynamics and symmetries of flow reversals in turbulent convection
Mani Chandra, Mahendra K. Verma
Based on direct numerical simulations and symmetry arguments, we show that the large-scale Fourier modes are useful tools to describe the flow structures and dynamics of flow rever…
Period doubling route to chaos in Taylor-Green dynamo
R. Yadav, M. Chandra, M. K. Verma +2
We perform spectral simulations of dynamo for magnetic Prandtl number of one with Taylor-Green forcing. We observe dynamo transition through a supercritical pitchfork bifurcation.…
Bifurcation and chaos in zero Prandtl number convection
Pinaki Pal, Pankaj Wahi, Mahendra K. Verma +2
We present the detailed bifurcation structure and associated flow patterns near the onset of zero Prandtl number Rayleigh Bénard convection. We employ both direct numerical simulat…
Energy transfers in shell models for MHD turbulence
T. Lessinnes, M. K. Verma, D. Carati
A systematic procedure to derive shell models for MHD turbulence is proposed. It takes into account the conservation of ideal quadratic invariants such as the total energy, the cro…
Dynamo Transition in Low-dimensional Models
Mahendra K. Verma, Thomas Lessinnes, Daniele Carati +3
Two low-dimensional magnetohydrodynamic models containing three velocity and three magnetic modes are described. One of them (nonhelical model) has zero kinetic and current helicit…