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Results for “Temperature model”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Comparing regional precipitation and temperature extremes in climate model and reanalysis products
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Nonstationary seasonal model for daily mean temperature distribution bridging bulk and tails
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Modeling solubility of CO 2 gas in room temperature ionic liquids using the COSMOSAC-LANL model: a first principles study
We present a thermodynamic model for asymmetric solutions emphasising solute–solvent interactions. Solubility and selectivity prediction of CO 2 and CH 4 in ionic liquids is improved using ADF-COSMOSAC-2013 and the new LANL activity coefficient model.
Two dimensional RMHD modeling of effective ion temperatures in recent ZR argon experiments
Radiation magnetohydrodynamic r-z simulations are performed of recent Ar shots on the refurbished Z generator to examine the effective ion temperature as determined from the observed line width of the He-γ line. While many global radiation properties can be matched to experimental results, the Doppler shifts due to velocity gradients at stagnation cannot reproduce the large experimentally determined width corresponding to an effective ion temperature of 50 keV. Ion viscous heating or magnetic bubbles are considered, but understanding the width remains an unsolved challenge.
Advancing Radiative Heat Transfer Modeling in High-Temperature Liquid Salts
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UNRAVELING THE ORIGIN OF OVERIONIZED PLASMA IN THE GALACTIC SUPERNOVA REMNANT W49B
Recent observations have shown several supernova remnants (SNRs) have overionized plasmas, where ions are stripped of more electrons than they would be if in equilibrium with the electron temperature. Rapid electron cooling is necessary to produce this situation, yet the physical origin of that cooling remains uncertain. To assess the cooling scenario responsible for overionization, in this paper we identify and map the overionized plasma in the Galactic SNR W49B based on a 220 ks Chandra Advanced CCD Imaging Spectrometer observation. We performed a spatially resolved spectroscopic analysis, measuring the electron temperature by modeling the continuum and comparing it to the temperature given by the flux ratio of the He-like and H-like lines of sulfur and argon. Using these results, we find that W49B is overionized in the west, with a gradient of overionization increasing from east to west. As the ejecta expansion is impeded by molecular material in the east but not in the west, our overionization maps suggest the dominant cooling mechanism is adiabatic expansion of the hot plasma.
Localized Corrosion: Passive Film Breakdown vs Pit Growth Stability: Part II. A Model for Critical Pitting Temperature
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Steady-State and Dynamic Modeling of Intermediate-Temperature Protonic Ceramic Fuel Cells
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Climate model synthetic satellite brightness temperature data
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Improvements in High Temperature Gas Cooled Reactor Modeling Capabilities in the Pronghorn Code
This report details the improvement of pebble bed reactor modeling capabilities in the Pronghorn code in fiscal year 2022. The following accomplishments are reported: Deployment of weakly compressible finite volume formulation to the HTR- PM reference plan model; Enable modeling of stagnant gas gaps in the finite volume formulation; Enable using all Pronghorn correlations available in the finite element version in the finite volume version; Modeling of decay heat in pebble bed reactors; Simplifying the input for multiphysics equilibrium core calculations and significant reduction of execution time; Implementation of advanced correlations developed by the Center of Excellence for Thermal-Fluids Applications in Nuclear Energy . In addition, this report includes a development plan for Pronghorn and associated NEAMS tools for prismatic gas-cooled reactors.
Pulsed High Temperature Superconducting Central Solenoid Model Coil for Plasma Current Drive and Control in High-Field Compact Commercial Fusion Power Plants (CRADA Final Report)
This ARPA-E BETHE project was aimed to design, build and test a fast-ramping HighTemperature Superconducting (HTS) Central Solenoid Model Coil (CSMC) that significantly derisks a full-size HTS Central Solenoid (CS) capable of driving and controlling the plasma current in a compact, high-field, low-cost tokamak power plant. The LBNL objectives and milestones for this project were divided into two distinct tracts: Diagnostics and Quench Simulation.
A Low Temperature Cyclopentane Oxidation Kinetics Model: Optimization of A Theory Based Sub Mechanism Against Experiment.
Abstract not provided.
Life Cycle Assessment and Cost Analysis of a Process-Based Sorbent-Based Direct Air Capture with Temperature-Vacuum Swing Adsorption Model
This presentation discusses different aspects of LCA and TEA of sorbent-based case study updates and methodologies utilized for carbon dioxide removal technologies. The combined TEA and LCA approach adopted herein provides insight into trade-offs between environmental performance and cost efficiency under various energy supply scenarios.
LCA-TEA of Sorbent-Based Direct Air Capture with Temperature-Vacuum Swing Adsorption Model
This poster presentation discusses different aspects of Life Cycle Assessment (LCA) and Techno Economic Analysis (TEA) of sorbent-based case study updates and methodologies utilized for carbon dioxide removal technologies. The combined TEA and LCA approach adopted herein provides insight into trade-offs between environmental performance and cost efficiency under various energy supply scenarios.
Comparison of land skin temperature from a land model, remote sensing, and in situ measurement
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