Richard Kramer
University of Illinois at Urbana–Champaign
8 Papers
27 Citations
Richard Kramer is an academic researcher from University of Illinois at Urbana–Champaign. The author has contributed to research in topics: Aerodynamics & Fusion power. The author has an hindex of 5, co-authored 8 publications.
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Papers
Chamber Design for the Laser Inertial Fusion Energy (LIFE) Engine
J F Latkowski,Ryan P. Abbott,Salvador M. Aceves,T. Anklam,D Badders,Andrew W. Cook,James A. Demuth,Laurent Divol,Bassem S. El-Dasher,Joseph C. Farmer,Daniel L. Flowers,Massimiliano Fratoni,R G ONeil,Thad Heltemes,Jave Kane,Kevin J. Kramer,Richard Kramer,A Lafuente,A Lafuente,Gwen Loosmore,K R Morris,Gregory A. Moses,B Olson,Carlos Pantano,Susana Reyes,M. Rhodes,K Roe,Richard H. Sawicki,Howard A. Scott,Mary L. Spaeth,Max Tabak,Scott Wilks +31 more
TL;DR: In this paper, an integrated design that meets all of these requirements is described, together with an integrated fusion chamber subsystem, which can absorb the fusion energy, produce fusion fuel to replace that burned in previous targets, and enable both target and laser beam transport to the ignition point.
A Cartesian-based embedded geometry technique with adaptive high-order finite differences for compressible flow around complex geometries
TL;DR: An immersed boundary methodology to solve the compressible Navier-Stokes equations around complex geometries in Cartesian fluid dynamics solvers is described, and applications to shock reflections, shock-ramp interactions, and supersonic and low-Mach number flows over two- and three-dimensional geometry are presented.
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Fluid–Structure Interaction Simulations of a Tension-Cone Inflatable Aerodynamic Decelerator
TL;DR: A series of fluid-structure interaction simulations of an aerodynamic tension-cone supersonic decelerator prototype intended for large mass payload deployment in planetary explorations are discussed in this paper.
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•Journal Article
Shock-resolved Navier-Stokes Simulation of the Richtmyer-Meshkov Instability
Richard Kramer,Dale Pullin +1 more
Abstract: The single-mode Richtmyer–Meshkov instability is investigated using a first-order perturbation of the two-dimensional Navier–Stokes equations about a one-dimensional unsteady shock-resolved base flow. A feature-tracking local refinement scheme is used to fully resolve the viscous internal structure of the shock. This method captures perturbations on the shocks and their influence on the interface growth throughout the simulation, to accurately examine the start-up and early linear growth phases of the instability. Results are compared to analytic models of the instability, showing some agreement with predicted asymptotic growth rates towards the inviscid limit, but significant discrepancies are noted in the transient growth phase. Viscous effects are found to be inadequately predicted by existing models.
Fluid-Structure Interaction Simulation of an Inflatable Aerodynamic Tension-Cone Decelerator
Richard Kramer,Fehmi Cirak,Carlos Pantano +2 more
- 28 Jun 2010
TL;DR: In this paper, a parametric study is carried out to investigate the deflections of the tension cone as a function of inflation pressure of the torus at a Mach of 2.5.
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