Computational Identification and Stuart-Landau Modeling of Collective Dynamical Behaviors of Octuple Laminar Diffusion Flame Oscillators [PDF]
, 2023 Annular chambers, consisting of multiple flame nozzles, are frequently used in many industrial processes, for example, rocket engines and gas turbines. In the study, we proposed a novel approach to the problem of annular combustion with emphasis on the collective dynamical behaviors that its individuals do not have.
arxiv +1 more source
Molecular Dynamics Study of the Sonic Horizon of Microscopic Laval Nozzles [PDF]
Phys. Rev. E 109, 065104 (2024), 2023 A Laval nozzle can accelerate expanding gas above supersonic velocities, while cooling the gas in the process. This work investigates this process for microscopic Laval nozzles by means of non-equilibrium molecular dynamics simulations of statioary flow, using grand canonical Monte-Carlo particle reservoirs.
arxiv +1 more source
WC-Co Coatings for High Temperature Rocket Nozzle Applications: An Applications Note
International Journal of Technology, 2014 High velocity oxy-fuel (HVOF) sprayed tungsten carbide – cobalt (WC-Co) coatings exhibit attributes that allow them to be a candidate material for high temperature applications; such as temperature insulators for rocket nozzles.
Bondan T. Sofyan +3 more
doaj +1 more source
Characteristics Analysis of Dual Bell Nozzle using Computational Fluid Dynamics
International Journal of Engineering Materials and Manufacture, 2019 Space exploration and space tourism have now become a raging competition among the developed nations. For this reason, different types of advanced rocket nozzles with prospective privileges are introduced.
Yeasir Mohammad Akib +2 more
doaj +1 more source
Supersonic flow of two-phase gas- droplet flows in nozzles
Известия высших учебных заведений: Проблемы энергетики, 2019 For practical applications, the description of processes occurring during the flow of two-phase gas-liquid mixtures requires a simple physical and mathematical model that describes the behavior of a two-phase medium in the entire range of phase ...
A. I. Sharapov +2 more
doaj +1 more source
Theoretical prediction of high melting temperature for a Mo–Ru–Ta–W HCP multiprincipal element alloy
npj Computational Materials, 2021 While rhenium is an ideal material for rapid thermal cycling applications under high temperatures, such as rocket engine nozzles, its high cost limits its widespread use and prompts an exploration of viable cost-effective substitutes.
Qi-Jun Hong +5 more
doaj +1 more source
Aerodynamic Design of a Laval Nozzle for Real Gas Using Hodograph Method
Aerospace, 2018 We propose an approach for the design of the subsonic part of plane and axisymmetric Laval nozzles for real gases. The proposed approach is based on the hodograph method and allows one to solve the inverse design problem directly.
Aleksandr Chikitkin +3 more
doaj +1 more source
Aerospace, 2022 High performance ceramics, particularly Ceramic Matrix Composite (CMC) materials found their way into liquid rocket engines. Yet, so far, mainly carbide or nonoxide CMCs have been of interest.
Christian Bach +2 more
doaj +1 more source
A computational model for the design of a nitrous oxide--paraffin wax hybrid rocket engine [PDF]
arXiv, 2023 A computational model is developed to assist the design of the first hybrid rocket engine of the McGill Rocket Team, using liquid nitrous oxide as an oxidizer and solid paraffin wax as a fuel. The model is developed in three phases: In the first phase, a steady-state model which neglects transient performance decrease of the hybrid engine is considered.
arxiv
Shock-Structure Formation in Circular and Non-Circular Sonic Jets at Underexpanded Conditions [PDF]
Journal of Applied Fluid Mechanics, 2022 The generation of shock waves and their repercussions in high-speed vehicles are inevitable. Particularly, the hot plume from the aircraft exhaust ejecting at a high speed, as well as the emitted aeroacoustic noise, have several consequences.
T. Thangaraj +3 more
doaj +1 more source