Results 51 to 60 of about 5,113,406 (258)
An Open-Source Hypersonic Solver for Non-equilibrium Flows
Havacılık ve Uzay Teknolojileri Dergisi, 2021 An implementation of a thermally non-equilibrium modeling on an existing open-source CFD solver is presented in this study. A newly coded open-source Navier-Stokes solver, hyperReactingFoam, including two-temperature model was developed within the ...
Davut Vatansever, Bayram Çelik
doaj
Multi-Objective RANS Aerodynamic Optimization of a Hypersonic Intake Ramp at Mach 5
Energies, 2022 The work describes a systematic optimization strategy for designing hypersonic inlet intakes. A Reynolds-averaged Navier-Stokes database is mined using genetic algorithms to develop ideal designs for a priori defined targets.
Francesco De Vanna +2 more
doaj +1 more source
Determination of density and concentration from fluorescent images of a gas flow
, 2007 A fluorescent image analysis procedure to determine the distribution of species concentration and density in a gas flow is proposed. The fluorescent emission is due to the excitation of atoms/molecules of a gas that is intercepted by an electron blade ...
AK Agrawal +15 more
core +1 more source
Energy Science &Engineering, EarlyView.This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi +5 more
wiley +1 more source
Investigation of the Inverse Magnus Effect on a Rotating Sphere in Hypersonic Rarefied Flow
Applied SciencesExplorations involving long-endurance and maneuvering flights in the upper atmosphere, as well as research on atmospheric entries of space debris or asteroids, call for a full understanding of hypersonic rarefied flows.
Yazhong Jiang +2 more
doaj +1 more source
, 2011 Aims: Bow shock waves are a common feature of groups and clusters of galaxies since they are generated as a result of supersonic motion of galaxies through the intergalactic medium. The goal of this work is to present an analytical solution technique for
Blondin +9 more
core +1 more source
Particle-based fluid dynamics: comparison of different BGK models and DSMC for hypersonic flows [PDF]
, 2018 The Bhatnagar-Gross-Krook (BGK) model as well as its extensions (ellipsoidal statistical BGK, Shakhov BGK, unified BGK) are used in particle-based fluid dynamics and compared with the Direct Simulation Monte Carlo Method (DSMC).
M. Pfeiffer
semanticscholar +1 more source
Propellants, Explosives, Pyrotechnics, EarlyView.This study presents an alternative method to manufacture polymer‐bonded explosives by partially curing an HTPB‐based molding powder prior to compaction. The study shows that the length of partial cure time before compaction directly influenced the geometric fidelity, homogeneity, compressive strength, density, and internal microstructure.
Ismar L. Chew +4 more
wiley +1 more source
Hypersonic Flow Research [PDF]
Nature, 1963 Hypersonic Flow Research Edited by Frederick R. Riddell. A Selection of Technical Papers based mainly on a Symposium of the American Rocket Society held at the Massachusetts Institute of Technology, Cambridge, Mass., August 16–18, 1961. (Progress in Astronautics and Rocketry, Vol. 7.) Pp. x + 758. (New York: Academic Press, Inc.; London: Academic Press,
openaire +1 more source
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source