1–50 von 2,112 Ergebnissen
|

    1D Thermo-Fluid Dynamic Modeling of Reacting Flows inside Three-Way Catalytic Converters

    Onorati, A. / Montenegro, G. | SAE Technical Papers | 2009
    reacting chemical species. The en-gine and the intake system have not been included in the simulation, imposing the measured values of mass flow ...
    Verlag: Society of Automotive Engineers , SAE International

    1-D transient emission analysis of LPG engine catalytic converter with secondary air injection during cold start period of CVS-75 mode

    Yun, J. E. | Springer Verlag | 2013
    emissions were analyzed using the simulation model with 7-step global surface chemical reactions of the Langmuir-Hinshelwood type. From the ...
    Verlag: The Korean Society of Automotive Engineers , Heidelberg

      1-D transient emission analysis of LPG engine catalytic converter with secondary air injection during cold start period of CVS-75 mode

      Yun, J. E. | Online Contents | 2013
      simulation model with 7-step global surface chemical reactions of the Langmuir-Hinshelwood type. From the simulated results, we found that a 29% HC ...
      Verlag: The Korean Society of Automotive Engineers , KSAE , Sŏul

    3D simulation study on the influence of lubricant oil droplets on pre-ignition in turbocharged DISI engines

    Huang, Yongcheng / Li, Yaoting / Zhang, Wenjia et al. | SAGE Publications | 2018
    A skeletal chemical kinetic model for the simulation of auto-ignition and flame propagation characteristics of primary reference fuel (PRF ...
    Schlagwörter: Skeletal chemical kinetic model

    3 nu/sub 3/ band of C-13H4

    Pugh, L. A. / Owen, T. / Rao, K. N. | NTRS | 1974

    Ablation Analyses of Optimized Nose Tips for Hypersonic Vehicles

    Onay, Oğuz K. / Eyi, Sinan | AIAA | 2019
    –Stokes and finite-rate chemical reaction equations are solved implicitly using Newton’s method. A gradient-based method is implemented for ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Ablation Model Based on Porous Charring Layer Under Alumina Erosion Condition

    Liu, Yang / Li, Xiao-Cong / Li, Jiang et al. | AIAA | 2019
    model more complex. The chemical vapor deposition and thermal chemical ablation processes of pyrolysis gas and fuel gas in the porous structure ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Vapor Deposition

    Ablation of ATJ Graphite at High Temperatures

    John H Lundell / Robert R Dickey | NTRS | 1973
    Results of an extensive experimental program on the ablation of ATJ graphite in air at surface pressures of 0.3 to 4.4 atm and surface ...
    Verlag: American Institute of Aeronautics and Astronautics

    Ablation Predictions for Carbonaceous Materials Using Two Databases for Species Thermodynamics

    Milos, F. S. / Chen, Y.-K. | AIAA | 2013
    chemical equilibrium with applications model predicts a range of recession that is consistent with measurements for both heatshield cores. ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Equilibrium

    Ablative Materials' Boundary Condition Simulation by Applying Inverse Approach and Euler Solver

    Molavi, Hosein / Pourshaban, Iraj / Hakkaki-Fard, Ali et al. | AIAA | 2012
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Equilibrium

    Abnormal Combustion Induced by Combustion Chamber Deposits Derived from Engine Oil Additives in a Spark-Ignited Engine

    Iijima, Akira / Kamano, Hideki / Shoji, Hideo et al. | SAE Technical Papers | 2014
    molybdenum compounds showed no significant impact on auto-ignition. Our results showed that the chemical composition of combustion chamber deposits ...
    Verlag: Society of Automotive Engineers , SAE International

    About the interaction between composition and performance of alternative jet fuels

    Braun-Unkhoff, Marina / Kathrotia, Trupti / Rauch, Bastian et al. | Springer Verlag | 2015
    ; however, the amount and type of hydrocarbons (chemical family) differ considerably. The question is how the composition of the fuel will affect ...

      About the interaction between composition and performance of alternative jet fuels

      Braun-Unkhoff, Marina / Kathrotia, Trupti / Rauch, Bastian et al. | Online Contents | 2015
      hydrocarbons (chemical family) differ considerably. The question is how the composition of the fuel will affect its suitability and performance: (i ...

    Absolute Measurements of Air Shock-Layer Radiation in the T6 Aluminium Shock Tube

    Collen, Peter L. / Glenn, Alex B. / Doherty, Luke J. et al. | AIAA | 2023

    This paper presents the first experimental measurements of shock-layer radiation from a new high-enthalpy ground-test facility: the T6

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Thermochemistry and Chemical Kinetics

    Absolute rate constant measurements for the radiative combination ofatomic oxygen with nitric oxide

    HILL, K. D. / KINEYKO, W. R. | AIAA | 1971
    Verlag: The American Institute of Aeronautics and Astronautics

    Accelerated aging versus realistic aging in aerospace composite materials. I. The chemistry of thermal aging in a low-temperature-cure epoxy composite

    Dao, B. / Hodgkin, J. / Krstina, J. et al. | Tema Archiv | 2006
    , 120 C, 170 C, and 200 C (in air) and the changes to the chemical and physicochemical structure of the composite are analyzed by a range of ...

    Accounting for laminar run and trip drag in supersonic cruise performance testing

    Goodsell, Aga M. / Kennelly, Robert A. jun. | Tema Archiv | 2004
    visualization using a subliming chemical revealed that the boundary-layer trip was not consistently effective. Flow over a portion of the upper wing ...

    Acetylene fuel from atmospheric CO2 on Mars

    Landis, Geoffrey A. / Linne, Diane L. | NTRS | 1992
    methane and oxygen by the exothermic reaction in an atmospheric processing module. Use of simple chemical reactions to produce acetylene/oxygen ...

    A characteristic study and optimization of in-cylinder configuration for particulate matters reduction in an off-highway diesel engine with mechanical fuel injection system

    Lee, Jongyoon / Lee, Sangyul / Park, Jeongkeun et al. | SAGE Publications | 2017
    ) model is employed for spray breakup and a reduced chemical mechanism for n-heptane is employed to simulate ignition delay and combustion of ...

    A chemical kinetic modelling study of the mechanism of soot reduction by oxygenated additives in diesel engines

    Nag, P. / Song, K.-H. / Litzinger, T. A. et al. | British Library Online Contents | 2001

    A chemically informed, control-oriented model of a three-way catalytic converter

    Soumelidis, M I / Stobart, R K / Jackson, R A | SAGE Publications | 2007
    Chemical activity inside a three-way catalytic converter (TWC) is highly complex and usually is not taken into account when developing TWC ...
    Schlagwörter: chemical modelling

    A chemically informed, control-oriented model of a three-way catalytic converter

    Soumelldis, M.I. / Stobart, R.K. / Jackson, R.A. | Tema Archiv | 2007
    Chemical activity inside a three-way catalytic converter (TWC) is highly complex and usually is not taken into account when developing TWC ...

    A Chemosorption Vacuum Pump for a Chemical Oxygen Iodine Laser with CO2 Buffer Gases

    Jia, S. / Li, Q. / Jin, Y. et al. | British Library Online Contents | 2017

    A comparison of tailpipe, dilution tunnel, and wind tunnel data in measuring motor vehicle PM

    Maricq, M.M. / Chase, R.E. / Xu, N. | Tema Archiv | 2001
    Comparison between particle size distributions recorded directly at the tailpipes of both diesel and gasoline vehicles and measurements ...

    A comparison of the relative effects of fuel composition and ignition energy on the early stages of combustion in a natural gas spark ignition engine using simulation

    Yossefi, D / Belmont, M. R. / Ashcroft, S. J. et al. | SAGE Publications | 2000
    Spark ignition engines operating on natural gas (NG) show advantages over petrol and diesel alternatives in terms of precatalyst emissions ...

    A Composite Optical Waveguide-Based Polarimetric Interferometer for Chemical and Biological Sensing Applications

    Qi, Z. / Itoh, K. / Murabayashi, M. et al. | British Library Online Contents | 2000
    Verlag: IEEE INSTITUTE OF ELECTRICAL AND ELECTRONICS

    A Computational Study of Abnormal Combustion Characteristics in Spark Ignition Engines

    Sow, Aliou / Hernandez Perez, Francisco / Im, Hong et al. | SAE Technical Papers | 2018
    , pressure, velocity, and mixture distributions are obtained and mapped from a top dead center (TDC) slice of full-cycle three-dimensional (3D ...
    Verlag: Society of Automotive Engineers , SAE International

    A Computational Study of the Combined Effects of EGR and Boost Pressure on HCCI Autoignition

    Jung, Dong Won / Iida, Norimasa | SAE Technical Papers | 2012
    -heptane. The computations were conducted using the single-zone model of CHEMKIN included in CHEMKIN-PRO with detailed chemical-kinetics mechanisms ...
    Verlag: Society of Automotive Engineers , SAE International

    Acoustic gas detection

    Tema Archiv | 2000
    A new detection system that uses sound rather than optical or chemical properties to determine the presence of escaping gas is described ...

    Acoustic Response of Near-Equilibrium Diffusion Flames with Large Activation Energies

    Weiss, Adam D. / Sánchez, Antonio L. / Williams, Forman A. | AIAA | 2019

    The interaction of non-premixed flamelets with acoustic pressure waves of large characteristic wavelength, central to the development of

     ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Acoustic Suppression in a Pulsed Chemical Laser

    Darrell R. Amherman / Irwin E. Alber / Eric Baum | AIAA | 1979
    Verlag: The American Institute of Aeronautics and Astronautics

    Active Subspace Variation and Modeling Uncertainty in a Supersonic Flame Simulation

    Wang, Nana / Yang, Tianwei / Ren, Zhuyin | AIAA | 2021
    chemical kinetics, turbulence combustion models, and boundary conditions, as well as to investigate the evolution of key physiochemical process ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Adaptive fast nonsingular terminal sliding mode control of Lorentz-augmented spacecraft relative motion

    Huang, Xu / Yan, Ye / Zhou, Yang | SAGE Publications | 2016
    traditional chemical propulsion is proposed. Furthermore, the stability of the closed-loop control system is proved via a Lyapunov-based approach ...

    A decontamination system for chemical weapons agents using a liquid solution on a solid sorbent

    Waysbort, Daniel / McGarvey, David J. / Creasy, William R. et al. | Tema Archiv | 2009
    A decontamination system for chemical warfare agents was developed and tested that combines a liquid decontamination reagent solution with ...

    A degree of controllability definition - Fundamental concepts and application to modal systems

    Viswanathan, C. N. / Longman, R. W. / Likins, P. W. | NTRS | 1984
    , such as the control of future, very large, flexible spacecraft and certain chemical process control problems, the question of how to choose the ...

    A Design Basis for Spacecraft Cabin Trace Contaminant Control

    Perry, J. L. | SAE Technical Papers | 2009
    Successful trace chemical contamination control is one of the components necessary for achieving good cabin atmospheric quality. While ...
    Verlag: Society of Automotive Engineers , SAE International

    A diesel particulate filter regeneration model with a multi-step chemical reaction scheme

    Law, M C / Clarke, A / Garner, C P | SAGE Publications | 2005
    important to understand the fundamentals of the regeneration process. Previous soot oxidation regeneration models relied on tunable chemical kinetic ...
    Schlagwörter: chemical

    A direct injection diesel combustion model for use in transient condition analysis

    Cui, Y / Deng, K / Wu, J | SAGE Publications | 2001
    velocity distribution of fuel spray, zonal entrainment and the calculation of gas properties and chemical equilibrium compositions of combustion ...

    Adjustment of Regional Regression Equations for Urban Storm-Runoff Quality Using At-Site Data

    Barks, C. Shane | Transportation Research Record | 2019
    . The four adjustment procedures are a single-factor adjustment, a regression of the observed data against the predicted values, a regression of ...

    Advanced Combustion Modelling of High BMEP Engines under Water Injection Conditions with Chemical Correlations Generated with Detailed Kinetics and Machine Learning Algorithms

    Forte, Claudio / Bianchi, Gian Marco / Pulga, Leonardo et al. | SAE Technical Papers | 2020
    thermodynamic effects of water injection but also the chemical kinetics aspects related to the mixture water dilution whose prediction is mandatory for ...
    Verlag: Society of Automotive Engineers , SAE International

    Advanced Models for Vibrational and Chemical Kinetics Applied to Mars Entry Aerothermodynamics

    Armenise, Iole / Reynier, Philippe / Kustova, Elena | AIAA | 2015

    The paper presents a comparative study of vibrational-chemical kinetics and heat transfer in carbon dioxide flows under Mars entry

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Vibrational Chemical Kinetics

    Advanced Propulsion for Geostationary Orbit Insertion and North-South Station Keeping

    Oleson, Steven R. / Myers, Roger M. / Kluever, Craig A. et al. | NTRS | 1997
    chemical propulsion apogee engine fuel is reduced in this analysis to allow the use of electric propulsion. A numerical optimizer is used to ...
    Verlag: American Institute of Aeronautics and Astronautics

    Advanced reactor concept for complex hydrides: Hydrogen desorption at fuel cell relevant boundary conditions

    Bürger, I. / Luetto, C. / Linder, M. | Tema Archiv | 2014
    capacities. As hydrogen is bonded by a chemical reaction to the solid state storage material, it is just released when heat is provided. In an ...

    Advanced treatment of recalcitrant textile wastewater and goal-oriented process design

    Han, Dukgyu / Kim, Moonil / Bae, Wookeun | Springer Verlag | 2013
    Abstract This study was intended to evaluate the performance of a biological and a chemical treatment process ...

    Advances in Computational Fluid Dynamics Methods for Hypersonic Flows

    Candler, Graham V. / Subbareddy, Pramod K. / Brock, Joseph M. | AIAA | 2014

    Over the past two decades or so, there have been many advances in the numerical simulation of hypersonic flows, with most effort focused

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Energy

    Aerocapture Assessment for NASA Ice Giants Pre-Decadal Survey Mission Study

    Saikia, Sarag J. / Millane, James / Lu, Ye et al. | AIAA | 2021
    heat rate, total heat load, and the effect of postcapture orbit on the design parameters. Aerocapture mass benefit vs chemical capture is also ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Aerodynamic Analysis of an Entry Capsule at Titan in Transition Regime

    Zuppardi, Gennaro / Mongelluzzo, Giuseppe | AIAA | 2022
    DS3V for the solution of three-dimensional flowfields. The Titan atmosphere is a mixture of nitrogen, methane, and argon. The chemical model is ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Aerodynamic Design of Nozzles with Uniform Outflow for Hypervelocity Ground-Test Facilities

    Chan, Wilson Y. K. / Jacobs, Peter A. / Smart, Michael K. et al. | AIAA | 2018

    A method is proposed for the aerodynamic design of nozzles with uniform outflow for supersonic and hypersonic ground-test facilities

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Equilibrium

    Aero Engine Ceramics—the Vision, the Reality and the Progress

    Angus, J P | SAGE Publications | 1993
    advanced materials in the world today. It consists of two-dimensional woven and laminated silicon carbide fibres in a chemical vapour infiltrated ...

    Aerothermodynamic Analysis of High-Altitude Space Launcher with Direct-Simulation Monte Carlo Method

    Cimini, M. / Pizzarelli, M. / Bernardini, M. | AIAA | 2019
    adopted numerical approach, a comparison of different air models is presented to highlight the effect of chemical reactions and molecules ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Aerothermodynamic methods for a Mars environmental survey Mars entry

    Mitcheltree, R. A. | NTRS | 1994
    Computational fluid dynamics models for the thermodynamics and transport properties used in an equilibrium version of the Langley ...