12 citations · 18 across the 7 of their papers we have counts for
7 papers
RF-Specific Tungsten Erosion and Global Transport in ITER under Neon Seeding
Atul Kumar, Dhyanjyoti Nath, Wouter Tierens +15
Ion cyclotron radio-frequency heating (ICRH) is a key auxiliary heating system in ITER, but high-power RF operation can enhance plasma-material interactions through rectified RF sh…
Unstructured Mesh Tools for Fusion Energy System Design
Mark S. Shephard, Jacob S. Merson, Onkar Sahni +6
The execution of accurate simulations of fusion energy systems requires the appropriate representation of critical component geometries as well as the coupling of complex fusion ph…
Understanding Carbon Sourcing and Transport Originating from the Helicon Antenna Surfaces During High-Power Helicon Discharge in DIII-D Tokamak
A. Kumar, D. Nath, W. Tierens +11
The high-power helicon wave system in the DIII-D tokamak introduces new plasma--material interaction (PMI) challenges due to rectified RF sheath potentials forming near antenna str…
Numerical Considerations for Advection-Diffusion Problems in Cardiovascular Hemodynamics
Sabrina R. Lynch, Nitesh Nama, Zelu Xu +3
Numerical simulations of cardiovascular mass transport pose significant challenges due to the wide range of Péclet numbers and backflow at Neumann boundaries. In this paper we pres…
Boundary Layer Adaptivity For Incompressible Turbulent Flows
Kedar C. Chitale, Michel Rasquin, Onkar Sahni +2
Boundary layers in turbulent flows require fine grid spacings near the walls which depend on the choice of turbulence model. To satisfy these requirements a semi-structured mesh is…
Anisotropic Boundary Layer Adaptivity of Multi-Element Wings
Kedar C. Chitale, Michel Rasquin, Onkar Sahni +2
Multi-element wings are popular in the aerospace community due to their high lift performance. Turbulent flow simulations of these configurations require very fine mesh spacings es…
Variational multiscale analysis: the fine-scale Green's function for stochastic partial differential equations
Jayanth Jagalur-Mohan, Onkar Sahni, Alireza Doostan +1
We present the variational multiscale (VMS) method for partial differential equations (PDEs) with stochastic coefficients and source terms. We use it as a method for generating acc…