Results 21 to 30 of about 32,814 (317)

Liquid Rocket Engine Performance Characterization Using Computational Modeling: Preliminary Analysis and Validation

Aerospace
The need to refuel future missions to Mars and the Moon via in situ resource utilization (ISRU) requires the development of LOX/LCH4 engines, which are complex and expensive to develop and improve.
Md. Amzad Hossain, Austin Morse, Iram Hernandez, Joel Quintana, Ahsan Choudhuri   +4 more
doaj   +1 more source

Turbulent Flame Behavior near Blow-Off in Multi-Stage Swirl Combustors: A Hybrid RANS-LES Study

Aerospace
Advances in high-performance computing have expanded the use of computational fluid dynamics (CFD) for reacting-flow analysis; however, simulations involving detailed flame kinetics remain computationally intensive for many practical systems.
Marcel Ilie, Brandon O'Brien
doaj   +1 more source

Modeling Thermal Radiation in Combustion Environments: Progress and Challenges

Energies, 2023
Modeling thermal radiation in combustion environments can be extremely challenging for two main reasons. First, the radiative transfer equation (RTE), which is the cornerstone of modeling radiation in such environments, is a five-dimensional integro ...
Sandip Mazumder, Somesh P. Roy
doaj   +1 more source

Advances and Challenges in Thermoacoustic Network Modeling for Hydrogen and Ammonia Combustors

Energies
The transition to low-carbon energy systems has heightened interest in hydrogen and ammonia as sustainable alternatives to traditional hydrocarbon fuels.
Seungmin Guk, Jaehoon Lee, Juwon Kim, Minwoo Lee   +3 more
doaj   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Simple Model of Pellet Combustion in Retort Burner

Communications, 2015
Combustion of the solid fuel in the burner is an important issue when discussing the CFD simulation of combustion in automatic boiler. In the present work is employed a simplified method for modeling the fuel bed, which is based on mass and heat balances
Jozef Micieta, Jiri Hajek, Jozef Jandacka   +2 more
doaj   +1 more source

On Lean Turbulent Combustion Modeling [PDF]

INCAS Bulletin, 2014
This paper investigates a lean methane-air flame with different chemical reaction mechanisms, for laminar and turbulent combustion, approached as one and bi-dimensional problem.
Constantin LEVENTIU, Sterian DANAILA
doaj   +1 more source

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

Comparative evaluation of different heat transfer correlations on a single curved-cylinder spark ignition crank-rocker engine

Alexandria Engineering Journal, 2021
Crank-rocker (CR) engine is a new kind of combustion engine that has a curved-cylinder combustion chamber. To enhance CR engine development and performance, high accuracy modeling which accurately predicts combustion characteristics is required.
M.F. Dabbaghi, M.B. Baharom, Z.A. Abdul Karim, A. Rashid A. Aziz, Salah E. Mohammed, Ezrann Z. Zainal A.   +5 more
doaj   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source