A5090307979- Gas Dynamics and Kinetic Theory
- Computational Fluid Dynamics and Aerodynamics
- Plasma and Flow Control in Aerodynamics
- Geometric and Algebraic Topology
- Rocket and propulsion systems research
- Particle Dynamics in Fluid Flows
- Homotopy and Cohomology in Algebraic Topology
- Fluid Dynamics and Turbulent Flows
- Laser-induced spectroscopy and plasma
- Cephalopods and Marine Biology
- Combustion and Detonation Processes
- Vacuum and Plasma Arcs
- Spacecraft and Cryogenic Technologies
- Mathematical Dynamics and Fractals
- Diamond and Carbon-based Materials Research
- Radiative Heat Transfer Studies
- Space Satellite Systems and Control
- Spectral Theory in Mathematical Physics
- Graphite, nuclear technology, radiation studies
- Neurobiology and Insect Physiology Research
- Advanced Operator Algebra Research
- Lattice Boltzmann Simulation Studies
- Thermal properties of materials
- Heat Transfer Mechanisms
- Plasma Diagnostics and Applications
University of Kentucky
2016-2025
Maxwell Institute for Mathematical Sciences
2017-2024
Heriot-Watt University
2017-2024
Institut des Sciences de la Mécanique et Applications Industrielles
2017-2021
Polytechnique Montréal
2002-2021
CEA DAM Île-de-France
2016-2020
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2013-2020
University of Liège
2019-2020
Center for Nanophase Materials Sciences
2020
Oak Ridge National Laboratory
2020
abinit is probably the first electronic-structure package to have been released under an open-source license about 20 years ago. It implements density functional theory, density-functional perturbation theory (DFPT), many-body (GW approximation and Bethe–Salpeter equation), more specific or advanced formalisms, such as dynamical mean-field (DMFT) “temperature-dependent effective potential” approach for anharmonic effects. Relying on planewaves representation of wavefunctions, density, other...
An analysis is made of the ${p}_{\frac{3}{2}}$ pseudoscalar meson-baryon scattering amplitudes in all isotopic spin and strangeness states. In analogy with pion-nucleon scattering, basic assumption that single baryon exchange contribution provides dominant force these made, but coupled two-particle channels each state are included. A relativistic matrix for constructed by a formulation $\frac{N}{D}$ method so it satisfies requirements unitarity symmetry. Being fully relativistic, unlike...
ABSTRACT The reports of measurements the blood volume molluscs found in literature are few number and represent, most cases, incidental observations rather than results specific investigations. Leitch (1916) obtained by bleeding Planorbis a which was 33% tissue weight. In 1931, Borden determined corneus using Weicker method value 58% total This higher is to be expected, since it impossible remove all from an animal simple bleeding. 1950, Martin & Huston, inulin dilution method, reported...
The behavior of pyrolysis gas transport in arcjet test samples is numerically studied. simulation the flow inside a porous material presented, using two different geometries. effects allowing to out sidewall are especially highlighted. Results show that article complex, and zero-dimensional or one-dimensional assumption made most response codes not necessarily valid for certain importance three-dimensionality modeling an ablative addressed.
Re-entry vehicles designed for space exploration are usually equipped with thermal protection systems made of ablative material. In order to properly model and predict the aerothermal environment vehicle, it is imperative account gases produced by ablation processes. case charring ablators, where an inner resin pyrolyzed at a relatively low temperature, composition gas expelled into boundary layer complex may lead chemical reactions that cannot be captured simple flow chemistry models....
The steps necessary to achieve the strong coupling between a flowfield solver and material response are presented. This type of is required accurately capture complex aerothermodynamic physics occurring during hypersonic atmospheric entries. A blowing boundary condition for proposed. allows ablating gas calculated by be correctly injected in layer. moving mesh algorithm that implicitly enforces geometric conservation law Using capability, movement procedure surface recession accurate shock...
An orthotropic material model is implemented in a three-dimensional response code, and numerically studied for charring ablative material. Model comparison performed using an iso-Q sample geometry. The presented pyrolysis gas streamlines time series of temperature at selected virtual thermocouples. Results show that permeability affects both flow thermal response, but conductivity essentially changes the performance only. hypothesized to contribute as it convects energy through porous medium.
It is hypothesized that spallation could affect the aerodynamic heating rates of reentry vehicles using ablative heat shields. To investigate effects, a code developed to compute dynamics spalled particles. The uses finite-rate chemistry model study chemical interactions particles with flow field. one-way coupled computational fluid solver models hypersonic field around an sample. Spalled particle behavior numerically studied in both argon and air fields.
Oxidation experiments on the carbon preform of a phenolic-impregnated ablator were performed in flow-tube reactor facility, at temperatures between 700 and 1300 K, under dry air gas pressures . Mass loss, volumetric recession density changes measured different test conditions. An analysis diffusion/reaction competition within porous material, based Thiele number, allows identification low temperature low-pressure conditions to be dominated by in-depth volume oxidation. Experiments above 1000...
Slowly but steadily, the Internet of Things (IoT) is becoming more and ubiquitous in our daily life. However, it also brings important security privacy challenges along with it, especially a sensitive context such as smart home. In this position paper, we propose novel architecture for home, called our, focusing on aspects, which combines federated learning secure data aggregation. We hope that proposition will provide step forward towards achieving homes.
The male reproductive tract of Octopus dofleini martini lies enclosed in the genital bag, inside mantle cavity. It consists testis, vas deferens proximale, spermatophoric gland system I (seminal vesicle), II (prostate), distale, sac (Needham’s sac) and terminal duct. spermatozoa, which upon leaving testis are as yet not encased, pass first into its gross appearance resembles epididymis; they then traverse two tubular systems II, where become encased spermatophores. Subsequently...
The degree of electron thermal nonequilibrium occurring in continuum, hypersonic, slender body, and blunt body flows is investigated. effect between the translational vibrational-electronic modes on predicted density temperature quantified at flight conditions characteristic a hypersonic vehicle, as well higher energy, superorbital condition reentry vehicle. most significant flowfield through influence magnitude chemical reaction rates high shock layer. A twofold reduction peak plasma flow...
Modern space vehicles designed for planetary exploration use ablative materials to protect the payload against high heating environment experienced during reentry. To properly model and predict aerothermal of vehicle, it is imperative account gases produced by ablation processes. The present study aims examine effects blowing gas in outer flow field. Using six points on Stardust entry trajectory at beginning continuum regime, from 81 69 km, various components heat flux are compared air-only...