52 citations · 301 across the 27 of their papers we have counts for
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Frequency power spectra of global quantities in magnetoconvection
Sandip Das, Krishna Kumar
We present the results of direct numerical simulations of power spectral densities for kinetic energy, convective entropy and heat flux for unsteady Rayleigh-Bénard magnetoconvecti…
Rayleigh-Bénard magnetoconvection with temperature modulation
Suparna Hazra, Krishna Kumar, Saheli Mitra
Floquet analysis of modulated magnetoconvection in Rayleigh-Bénard\ geometry is performed. The temperature of the lower plate is varied sinusoidally in time about a finite mean. As…
Rhombic Patterns Near a Bicritical Point in Periodically Forced Surface Waves
Krishna Kumar, Supriyo Paul, Dharmesh Jain
We present here a study of selection of rhombic patterns close to a bicritical point at the onset of primary surface instability in viscous fluids under two-frequency vertical vibr…
Thermal flux in unsteady Rayleigh-Bénard magnetoconvection
Sandip Das, Krishna Kumar
We present results of numerical investigation on thermal flux in Rayleigh-Bénard magnetoconvection in the presence of a uniform vertical magnetic field. We have studied thermal flu…
Instability of a horizontal water half-cylinder under vertical vibration
Dilip Kumar Maity, Krishna Kumar, Sugata Pratik Khastgir
We present the results of an experimental investigation on parametrically driven waves in a water half-cylinder on a rigid horizontal plate, which is sinusoidally vibrated in the v…
Effects of a small magnetic field on homoclinic bifurcations in a low-Prandtl-number fluid
Arnab Basak, Krishna Kumar
Effects of a uniform magnetic field on homoclinic bifurcations in Rayleigh-Bénard convection in a fluid of Prandtl number are investigated using direct numerical simula…