Results 81 to 90 of about 69,983 (311)

Some features of bypass engine operation process with separate exhaust nozzles

Научный вестник МГТУ ГА, 2016
In the article some equations are derived to establish the relationships between the thermodynamic cycle parameters applying to bypass engines with separate exhaust nozzles. Necessary calculations are made and the main dependences are analyzed.
V. V. Medvedev, V. T. Shulekin
doaj  

Performance Analysis of Wave Rotor Combustor Integration into Baseline Engines: A Comparative Study of Pressure-Gain and Work Cycles

Energies
This study presents two concepts for integrating a wave rotor combustor (WRC) into a baseline engine: the wave rotor pressure-gain cycle (WRPGC) and the wave rotor work cycle (WRWC).
Renchuan Zheng, Erlei Gong, Jianzhong Li, Qian Yao, Zhaolong Nie   +4 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

A study of trilateral flash cycles for low-grade waste heat recovery-to-power generation [PDF]

, 2014
There has been renewed significance for innovative energy conversion technologies, particularly the heat recovery-to-power technologies for sustainable power generation from renewable energies and waste heat. This is due to the increasing concern over
Ajimotokan, Habeeb A.
core  

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Ammonia/Water Thermodynamic Cycle For Lunar Power Applications [PDF]

, 2021
For long-term presence on the lunar surface, a reliable and efficient power source is required. A novel thermodynamic bottoming cycle which utilizes ammonia and water—the Kalina Cycle—is evaluated for use on the lunar surface.
Harris, Jeremy David
core   +1 more source

Quantum thermodynamics on a limit cycle

Quantum Science and Technology
Abstract We consider a periodic quantum clock based on cooperative resonance fluorescence at zero temperature. The semi-classical dynamics exhibit a Hopf bifurcation to a limit cycle. In the quantum case, this system has an exact steady state and the limit cycle appears in conditional quantum dynamics under homodyne detection. We show
Varinder Singh, Euijoon Kwon, G J Milburn   +2 more
openaire   +4 more sources

Foundational Machine‐Learning Interatomic Potential for Simulating Chemically Complex Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
We apply a foundational machine‐learning interatomic potential based on the graph atomic cluster expansion (GRACE) to simulate the commercial Ni‐based single‐crystal superalloy CMSX‐4. Hybrid Monte‐Carlo/molecular dynamics sampling resolves short‐range order in the γ phase and L12 sublattice occupancies in the γ’ phase and connects them to stacking ...
Aditya Vishwakarma, Sarath Menon, Fritz Körmann, Thomas Hammerschmidt, Ralf Drautz   +4 more
wiley   +1 more source

Evaluation of the Energy Efficiency of the Stage Compression Heat Pump Cycle

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2019
The increase in production and modernization of existing heat pumps are global trends in the development and implementation of heat pump technology. Application of refrigerant with zero potential ozone depletion relative to fluorinetrichloromethane and ...
S. K. Abildinova, R. A. Musabekov, A. S. Rasmukhametova, S. V. Chicherin   +3 more
doaj   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source