18 citations · 38 across the 7 of their papers we have counts for
5 papers · 1 filter
A sharp-diffuse interface model for intermittent and isolated topological transitions
Raaghav Ramani
We propose a hybrid sharp-diffuse interface representation for modeling intermittent and isolated topological transitions during Cahn-Hilliard phase coarsening. Away from topologic…
A fast dynamic smooth adaptive meshing scheme with applications to compressible flow
Raaghav Ramani, Steve Shkoller
We develop a fast-running smooth adaptive meshing (SAM) algorithm for dynamic curvilinear mesh generation, which is based on a fast solution strategy of the time-dependent Monge-Am…
A multiscale model for Rayleigh-Taylor and Richtmyer-Meshkov instabilities
Raag Ramani, Steve Shkoller
We develop a novel multiscale model of interface motion for the Rayleigh-Taylor instability (RTI) and Richtmyer-Meshkov instability (RMI) for two-dimensional, inviscid, compressibl…
A space-time smooth artificial viscosity method with wavelet noise indicator and shock collision scheme, Part 1: the 1-D case
Raaghav Ramani, Jon Reisner, Steve Shkoller
In this first part of two papers, we extend the C-method developed in [40] for adding localized, space-time smooth artificial viscosity to nonlinear systems of conservation laws th…
A space-time smooth artificial viscosity method with wavelet noise indicator and shock collision scheme, Part 2: the 2-D case
Raaghav Ramani, Jon Reisner, Steve Shkoller
This is the second part to our companion paper [18]. Herein, we generalize to two space dimensions the C-method developed in [20,18] for adding localized, space-time smooth artific…