101–150 von 1,954 Ergebnissen
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    Similarity and Scaling in a Liquid-Fuel Ramjet Combustor

    Riska, Elisabeth / Gany, Alon | AIAA | 2023
    series of similarity rules resulting in pressure–diameter scaling. The scaling model was evaluated using Cantera chemical kinetics software and ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Gas Phase Chemical Kinetics , Degree of Reaction

    Mechanical and Microscopic Properties of Copper-contaminated Soil Solidified with Calcium Carbide Residue, Metakaolin, and Desulfurization Gypsum under Freeze-thaw Cycles

    Wang, Qiang / Ge, Dandan / Cai, Guojun et al. | Springer Verlag | 2023

    The solidification/stabilization effect of heavy metal contaminated soils in frozen soil regions may be weakened

     ...
    Verlag: Korean Society of Civil Engineers , Seoul

    Special issue: 2022 Space Propulsion Conference

    Space Propulsion Conference | TIBKAT | 2023

    Propulsion Alternatives for Mars Transportation Architectures

    Nikitaeva, Daria / Dale Thomas, L. | AIAA | 2023
    of using chemical H 2  ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Real-Time Simulation of CNG Engine and After-Treatment System Cold Start Part 1: Transient Engine-Out Emission Prediction Using a Stochastic Reactor Model

    Mauss, Fabian / Rottengruber, Hermann / Oder, Johannes et al. | SAE Technical Papers | 2023
    and tabulated chemistry. The tabulated chemistry approach allows to account for the physical and chemical properties of natural gas fuels in ...
    Verlag: Society of Automotive Engineers , SAE International

    Low-Order Autoignition Modeling for Hydrogen Transverse Jets

    Gkantonas, Savvas / Mastorakos, Epaminondas | AIAA | 2023
    from the evolution of the chemical reactions, whereas the effect of mixing is maintained on the latter with the purpose of creating a reliable ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Law of the Wall

    Conducting Large-scale Model Experiments on Xanthan Gum Treated Clay as an Eco-friendly Approach to Soil Improvement

    Bağrıaçık, Baki / Mahmutluoğlu, Barış | Springer Verlag | 2023
    for the existence of chemical and physical improvements in the soil structure. ...
    Verlag: Korean Society of Civil Engineers , Seoul

    Scramjet Engine Flowpath That Improves Specific Impulse Using JP-7 Fuel

    Choi, Yunseok / Driscoll, James F. | AIAA | 2023

    A flowpath geometry was computed that improves the specific impulse of a dual-mode scramjet engine in a generic X-51 hypersonic vehicle

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

    Biomass-Based Iron Removal: Adsorption Kinetics, Isotherm and Machine Learning Modelling with Ocimum sanctum And Syzygium cumini

    Paranjape, Praveda / Sadgir, Parag | Springer Verlag | 2023
    . Innovative chemical-based iron extraction processes exist, albeit being costly. Therefore, iron removal using easily accessible plants is the most ...
    Verlag: Korean Society of Civil Engineers , Seoul

    Research on Surface Treatment Coating on Titanium Alloy Based on Laser Cladding Technology

    al Muin, Abdullah / Chand, Dharmahinder Singh / Malhi, Gurmail Singh et al. | SAE Technical Papers | 2023
    material powder is good self-fluxing, has high-temperature resistance, and is analytically pure with 200 mesh. The chemical properties of Ni ...
    Verlag: Society of Automotive Engineers , SAE International

    Characterizing a Local Sewage Sludge Ash for Developing Alkali-Activated Geopolymer Mortar

    Alhassan, Ibrahim / Park, Junboum / Tang, Xiaochao | Transportation Research Record | 2023
    geopolymer mortar. Chemical and leaching analysis found no significant adverse environmental implications of the SSA. Strength activity index tests ...

    Mass Concrete Mixtures Optimized for Temperature Control and High Workability

    Ozyildirim, H. Celik / Sharifi, Mary / Hossain, M. Shabbir | Transportation Research Record | 2023

    Mass concrete is prone to thermal cracking, deleterious chemical reactions, and ultimate strength reduction caused by a high temperature

     ...

    Ignition improvers for aqueous ammonia as marine fuel

    Schönborn, Alessandro / Lee, Kang-Ki | SAGE Publications | 2023
    ammonia (25% by mass) as fuel, was investigated using chemical kinetic simulations at conditions representative of a two-stroke marine diesel ...

    Trapped equivalence ratio determination in two-stroke engines

    Bajwa, Abdullah U / Patterson, Mark / Jacobs, Timothy J | SAGE Publications | 2023
    The chemical composition of the trapped fuel-air-residual gas mixture controls the nature of combustion in internal combustion engines and ...

    Case Study on Using Warm Mix Asphalt at Reduced Production Temperatures for Balanced Mix Design

    Yin, Fan / Moore, Nathan / Chen, Chen et al. | Transportation Research Record | 2023

    This study provides a case study to illustrate the feasibility of using warm mix asphalt (WMA) at lower production temperatures to

     ...

    Effect of Graphene Oxide on Chemical Shrinkage Behavior of Cement-Based Composite Paste

    Miao, Yanchun / Zhang, Yu / Li, Beibei et al. | Springer Verlag | 2022
    microstructure and mechanical properties of cement-based materials. However, the effect of GO on the chemical shrinkage of cement-based materials remains ...
    Verlag: Korean Society of Civil Engineers , Seoul
    Schlagwörter: Chemical shrinkage

    Chemical and Rheological Characterization of Asphalt Binders: A Comparison of Asphalt Binder Aging and Asphalt Mixture Aging

    Barghabany, Peyman / Zhang, Jun / Mohammad, Louay N. et al. | Transportation Research Record | 2022

    The objective of this study was to compare the chemical and rheological properties of asphalt binders recovered from aged asphalt

     ...

    Effects of Ignition Timing and Fuel Chemical Composition on Autoignition Behavior and Knocking Characteristics under Lean Conditions

    Iijima, Akira / Shirane, Kaede / Furusyo, Karin et al. | SAE Technical Papers | 2022
    visualized combustion images and frequency analysis of the in-cylinder pressure waveform. In addition, chemical kinetic simulations were used to ...
    Verlag: Society of Automotive Engineers , SAE International

    High Efficiency Regeneration Performance of Exhausted Activated Carbon by Superheated Steam and Comparison with Conventional Chemical Regeneration Method

    Ying, Xinyi / Kim, Gisung / Han, Ihnsup et al. | Springer Verlag | 2022

    Spent activated carbon is a common by-product of pollution treatment with granular activated carbon (GAC

     ...
    Verlag: Korean Society of Civil Engineers , Seoul
    Schlagwörter: Reuse of spent activated carbon , Chemical regeneration

    Effectiveness of Soy Methyl Ester-Polystyrene as a Concrete Protectant on Mitigating the Chemical Interaction between Cement Paste and Calcium Chloride

    He, Jialuo / Thway, Thiha / Farnam, Yaghoob | Transportation Research Record | 2022

    Concrete pavements and bridge decks suffer from severe deterioration caused by the application of chloride-based deicing salts (i.e

     ...

    A Combined Method For Determining The Contributing Factors To Chemical Spills In Port Areas During Maritime Dangerous Cargo Transport

    Freier Zugriff
    Özge Eski / Leyla Tavacioglu | DOAJ | 2022
    analysis method was applied to calculate the correlational degrees of contributing factors. Most chemical spills in port areas occur during cargo ...
    Schlagwörter: Chemical engineering

    Conceptual Design of a Space Power System Based on Combustion of Metals

    Shafirovich, Evgeny | AIAA | 2022
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Energy

    Trajectory Optimization and Cost Estimation of Laser Propulsion Systems Considering Transmission Losses

    Takano, Seiichiro / Ishikawa, Kazuyoshi / Matsui, Makoto | AIAA | 2022
    were considered for the experience curve effect. The calculation indicated the cost of 267,000 launches was 29.1% of the cost of chemical ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Rocket , Chemical Propulsion

    Mechanism of Electric Charging of Aluminum Oxide Particles When Burning Solid Fuels

    Savel’ev, Alexander M. / Yagodnikov, Dmitriy A. | AIAA | 2022

    The mechanism of electrical charging of particles of aluminum oxide

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Equilibrium , Degree of Ionization , Number of Particles

    Review of Groundwater Analysis in Various Regions in Tamil Nadu, India

    Shanmugamoorthy, Manoj / Subbaiyan, Anandakumar / Velusamy, Sampathkumar et al. | Springer Verlag | 2022
    Promotion Corporation of Tamil Nadu Limited (SIPCOT) industrial areas. The groundwater quality level is focused on the different regions named as ...
    Verlag: Korean Society of Civil Engineers , Seoul
    Schlagwörter: Chemical parameters , Physico-chemical parameters

    ASSESSING THE ENVIRONMENTAL IMPACT OF ROADWAY’S CONSTRUCTION ON ADJACENT WATER RESOURCES: A CASE STUDY OF THE SOUTHERN PART OF ALBANIA

    Freier Zugriff
    Blerina BEQAJ | DOAJ | 2022
    southern part of Albania, on physic-chemical parameters of surface water by collecting water samples from Skotini stream. The analysed parameters ...
    Verlag: Silesian University of Technology
    Schlagwörter: physic-chemical parameters

    Combustion Simulation of 82-Injector Rocket Engine

    Xiong, Juntao / Liu, Feng / Sirignano, William A. | AIAA | 2022
    -step chemical kinetic rates are simulated on the resolved scale to determine the effect of the burning rate. Application of kinetic rates on ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Comparison of Four Space Propulsion Methods for Reducing Transfer Times of Crewed Mars Missions

    Guerra, André G. C. / Bertolami, Orfeu / Gil, Paulo J. S. | Springer Verlag | 2022
    different state of the art technologies (chemical, nuclear thermal and electric) and one advance technology, the “Pure Electro-Magnetic Thrust ...
    Schlagwörter: Chemical Propulsion

    Assessment of Finite-Rate Chemistry Effects in a Turbulent Dilute Ethanol Spray Flame

    Yin, Yu / Yang, Tianwei / Zhou, Hua et al. | AIAA | 2022
    employed to describe the chemical kinetics and reveal the impact of chemistry. Results are compared against measurement, including gas-phase ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Gas Phase Chemical Kinetics , Chemical Equilibrium

    Use of Mahua oil for rejuvenation of the aged binder through laboratory investigations

    Freier Zugriff
    Sujit Kumar Pradhan / Umesh Chandra Sahoo | DOAJ | 2022
    (biological name: Madhuca Longifolia) as a potential rejuvenator through rheological, chemical, and thermal characterization of the rejuvenated RAP ...

    Conceptual Design of Small-Sized Thruster Using Laser Ignition of High-Energy Monopropellant

    Itouyama, Noboru / Wada, Asato / Habu, Hiroto et al. | AIAA | 2022
    high energy density, high thermal/chemical stability, and low toxicity. Consequently, a chemical thruster system based on ADN-EILPs can be ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Effects of Aggregate/Filler Characteristics on Semi-Circular Bend Fracture Parameters of Asphalt Concrete Mixtures Subject to Moisture Damage

    Frossard, Rodolpho Medeiros / Teixeira, Jamilla Emi Sudo Lutif / Kim, Yong-Rak | Transportation Research Record | 2022
    by the chemical, physical, morphological, and mineralogical properties of aggregates. Many studies have attempted to assess fracture ...

    Onset of Oblique Detonation Waves for a Cavity-Based Wedge

    Yang, Li / Yue, Lianjie / Zhang, Qifan | AIAA | 2022

    To shorten the ignition length of the wedge-induced oblique detonation wave, a geometric setup in which the leading and aft wedges are

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

    Investigation on Aging Model of Solid Propellant Using the Degree of Crosslinking

    Freier Zugriff
    Junqi Wang / Huiru Cui / Weili Ma | DOAJ | 2022
    Solid propellant is the main part of solid rocket motor (SRM). To further investigate the service life of SRM, aging of solid propellant ...

    Evaluation of Sublimation Kinetics for Phenolic Impregnated Carbon Ablator

    Chen, Yih-Kanq / Gökçen, Tahir | AIAA | 2022
    using three different sets of sublimation coefficients, which are obtained through direct measurements. The standard chemical equilibrium ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Equilibrium

    Evaluation of Alternative Sources of Supplementary Cementitious Materials for Concrete Materials

    Subedi, Sujata / Arce, Gabriel A. / Hassan, Marwa M. et al. | Transportation Research Record | 2022
    cement by mass. Characterization results showed that all three ashes met ASTM C618 chemical requirements (i.e., sum of SiO2 ...

    A New Mixture Criterion for the Improvement of the Compressive Strength of Adobe Using Zeolite as Stabilizer

    Lara-Ojeda, Rosa Angélica / Miranda-Vidales, Juana María / Narváez-Hernández, Lilia et al. | Springer Verlag | 2022

    The use of zeolite as a stabilizer for adobe has proven to have the ability to improve its physical and chemical

     ...
    Verlag: Korean Society of Civil Engineers , Seoul

    Hybrid Continuum/Rarefied Flow Simulations of Plume Interaction with Full-Sized Spacecraft

    Tani, Hiroumi / Ohmaru, Tetsufumi | AIAA | 2022
    and heat fluxes imposed by plumes impinging on spacecraft in actual length scale. The first application was the impingement of H-II Transfer ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Propulsion

    Test of Consolidation-Collapse Properties of the Black Soil of Northeast China Based on Burland Model

    Chen, Zihao / Li, Chi / Gao, Liping | Springer Verlag | 2022
    difference of the soil’s structure, chemical constitution, and organic content leads to the distinction of mechanical property. The current research ...
    Verlag: Korean Society of Civil Engineers , Seoul

    Effect of CO 2 Dilution on Forced Ignition of Jet-A/Air Mixtures

    Teope, Kaz I. / Bonebrake, Jonathan M. / Blunck, David L. | AIAA | 2022

    Consistent ignition in environments where combustion products are present is critical for the safety and reliability of some propulsion

     ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Conservation of Mass

    Effect of high temperature oxidation and particle erosion on the performance of C/C-SiC composites materials

    Freier Zugriff
    WANG Lingling / WANG Kunjie / ZHANG Xiaolong et al. | DOAJ | 2022
    -SiC composites than thermo-chemical ablation caused by long-term high temperature oxidation, which directly affects the performance of the ...
    Verlag: Journal of Aeronautical Materials

    Impacts of Field and Laboratory Long-Term Aging on Asphalt Binders

    Singhvi, Punit / Mainieri, Javier J. García / Ozer, Hasan et al. | Transportation Research Record | 2022

    Asphalt binder aging accelerates cracking of flexible pavement. Quantifying the extent of binder aging allows the formulation and

     ...

    Molecular Characterization of Polyimide Film and Silicone Adhesive Outgassing Using Mass Spectrometry

    Roussel, Jean-François / Lansade, David / Leclercq, Ludivine et al. | AIAA | 2022
    of total contaminant mass and instead characterizing the various emitted chemical species individually: both quantitatively and chemically ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Ficks Law of Diffusion , Moons of Jupiter

    Modeling of Thermochemical Nonequilibrium Flows Using Open-Source Direct Simulation Monte Carlo Kernel SPARTA

    Chen, Song / Stemmer, Christian | AIAA | 2022

    Chemical reactions are usually coupled with transfer of internal energies in high-temperature gas and have been an ongoing challenge for

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

    Investigation of Combustion Structure and Flame Stabilization in an Axisymmetric Scramjet

    Tang, Tao / Wang, Zhenguo / Huang, Yuhui et al. | AIAA | 2022
    consider the effect of pressure changes on chemical reaction rates. On this basis, the cold flow and combustion flowfields are analyzed; it is ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Effects of Divergence Inlet on Kerosene/Air Rotating Detonation Engines

    Wang, Fang / Weng, Chunsheng | AIAA | 2022

    In this paper, an improved three-dimensional conservation element and solution element method with chemical source terms is developed

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

    Development of Transaxle Fluid for Electrification Vehicles: Design of Novel Additive Formulation

    Tada, Akira / Tokozakura, Daisuke / Aizawa, Kouki et al. | SAE Technical Papers | 2022
    issues, we made improvements on the additive formulation of fluid, such as the addition of an oil-film-forming polymer, chemical structure change ...
    Verlag: Society of Automotive Engineers , SAE International

    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

    Lime Treatment of Lake Texcoco Clays with Some Insights on the Application of Deep Mixing Columns

    Naik, Saureen R. / Akula, Pavan / Hariharan, Narain et al. | Transportation Research Record | 2022
    area, trial sections were built to analyze the effect of quicklime (CaO) on the natural clay s physical, chemical, and engineering properties ...