29 citations · 78 across the 7 of their papers we have counts for
7 papers
Effect of Rotation on Wave Mixing in Intermediate Mass Stars
A. Varghese, R. P. Ratnasingam, R. Vanon +3
Internal gravity waves (IGWs) are likely to cause mixing in stellar interiors. Studies show that the mixing by these waves changes drastically across age and mass (Varghese et al.…
Three-Dimensional Simulations of Massive Stars: II. Age Dependence
R. Vanon, P. V. F. Edelmann, R. P. Ratnasingam +2
We present 3D full star simulations, reaching up to 90% of the total stellar radius, for three stars of different ages (ZAMS, midMS and TAMS). A comparison with several…
Internal Gravity Waves in Massive Stars II: Frequency Analysis Across Stellar Mass
R. P. Ratnasingam, T. M. Rogers, S. Chowdhury +4
Stars with masses above 1.6 solar masses generally possess convective cores and radiative envelopes, which allows the propagation of outward-travelling internal gravity waves. We h…
Chemical Mixing Induced by Internal Gravity Waves in Intermediate Mass Stars
A. Varghese, R. P. Ratnasingam, R. Vanon +2
Internal gravity waves (IGWs) can cause mixing in the radiative interiors of stars. We study this mixing by introducing tracer particles into two - dimensional (2D) hydrodynamic si…
Self-similar source-type solutions to the three-dimensional Navier-Stokes equations
K. Ohkitani, R. Vanon
We formalise a systematic method of constructing forward self-similar solutions to the Navier-Stokes equations in order to characterise the late stage of decaying process of turbul…
The role of zonal flows in disc gravito-turbulence
Riccardo Vanon
The work presented here focuses on the role of zonal flows in the self-sustenance of gravito-turbulence in accretion discs. The numerical analysis is conducted using a bespoke pseu…
Zonal flow evolution and overstability in accretion discs
Riccardo Vanon, Gordon Ogilvie
This work presents a linear analytical calculation on the stability and evolution of a compressible, viscous self-gravitating (SG) Keplerian disc with both horizontal thermal diffu…