80 citations · 367 across the 24 of their papers we have counts for
8 papers · 1 filter
Nonlinear State Estimation using Gaussian Integral
Kundan Kumar, Shovan Bhaumik
In this letter, a new filtering technique to solve a nonlinear state estimation problem has been developed. It is well known that for a nonlinear system, the prior and posterior pr…
A Mixed Approach to the Poisson Problem with Line Sources
Ingeborg G. Gjerde, Kundan Kumar, Jan M. Nordbotten
In this work we consider the primal mixed variational formulation of the Poisson equation with a line source. The analysis and approximation of this problem is non-standard as the…
Implicit linearization method for non-standard two-phase flow in porous media
Abay M. Kassa, Kundan Kumar, Sarah E. Gasda +1
In this paper, we consider a non-local (in time) two-phase flow model. The non-locality is introduced through the wettability alteration induced dynamic capillary pressure function…
Analysis of dynamic ruptures generating seismic waves in a self-gravitating planet: an iterative coupling scheme and well-posedness
Maarten V. de Hoop, Kundan Kumar, Ruichao Ye
We study the solution of the system of equations describing the dynamical evolution of spontaneous ruptures generated in a prestressed elastic-gravitational deforming body and gove…
Automated retinal vessel segmentation based on morphological preprocessing and 2D-Gabor wavelets
Kundan Kumar, Debashisa Samal, Suraj
Automated segmentation of vascular map in retinal images endeavors a potential benefit in diagnostic procedure of different ocular diseases. In this paper, we suggest a new unsuper…
The gradient flow structures of thermo-poro-visco-elastic processes in porous media
Jakub Wiktor Both, Kundan Kumar, Jan Martin Nordbotten +1
In this paper, the inherent gradient flow structures of thermo-poro-visco-elastic processes in porous media are examined for the first time. In the first part, a modelling framewor…