Results 11 to 20 of about 191 (185)

Solution of super- and hypersonic gas dynamic problems with a model of high-temperature air [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2021
The study considers the solution of a number of problems of supersonic and hypersonic gas dynamics using a model that takes into account the dissociation and ionization of air.
Konstantin N. Volkov, Yuriy V. Dobrov, Anton G. Karpenko, Mikhail S. Yakovchuk   +3 more
doaj   +2 more sources

Two Methods to Improve the Efficiency of Supersonic Flow Simulation on Unstructured Grids

Fluids, 2022
The paper presents two methods to improve the efficiency of supersonic flow simulation using arbitrarily shaped unstructured grids. The first method promotes increasing the numerical solution convergence rate and is based on the geometric multigrid ...
Andrei S. Kozelkov, Andrei V. Struchkov, Dmitry Y. Strelets   +2 more
doaj   +2 more sources

Computational Hypersonic Aerodynamics with Emphasis on Earth Reentry Capsules

INCAS Bulletin, 2016
The temperature in the front region of a hypersonic vehicle nose can be extremely high, for example, reaching approximately 11 000 K at a Mach number of 36 (Apollo reentry) due to the bow shock wave.
Mihai Leonida NICULESCU, Maria Cristina FADGYAS, Marius Gabriel COJOCARU, Mihai Victor PRICOP, Mihaita Gilbert STOICAN, Dumitru PEPELEA   +5 more
doaj   +2 more sources

Aerodynamic Layout Designs Using of Microflaps for Flow Control of a Supersonic Finned Projectile

Xibei Gongye Daxue Xuebao, 2019
In this paper, the flow control system consists of some small microflaps located between the rear fins of the projectile. These microflaps can alter the flow field in the finned region of the projectile resulting in asymmetric pressure distribution and ...

doaj   +3 more sources

Hypersonic Aerodynamics Using BGK Approach for Oscillatory Membrane-on-Ballute with Bow Shock Wave

47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 2009
Gaskinetic BGK approach is preferable to handle the hypersonic- entry aerodynamics of inflatable decelerators or ballutes, because the peak dynamic pressure is likely to fall within the rarefied gasdynamic regime. We report here our recent development of such a BGK approach for inflatable aeroelastic applications. First, the gaskinetic flow solver BGKX
Shuchi Yang, Danny Liu, Zhicun Wang, Chunpei Cai   +3 more
openaire   +2 more sources

Impact of a thermally stratified energy source on the bow shock wave and aerodynamic characteristics of a body

Journal of Physics: Conference Series, 2021
Abstract This paper presents numerical modelling of a thermally stratified energy source’s effect on the supersonic flow past a body “double-wedge - plate”. A multiple generation of the Richtmyer-Meshkov instabilities was obtained. These instabilities cause almost complete destruction of the bow shock front inside the source area and ...
O A Azarova, O V Kravchenko
openaire   +1 more source

Numerical analysis of stagger Supersonic biplane at off-design condition with trailing edge flap [PDF]

FME Transactions, 2023
Supersonic biplanes can achieve low-boom and low-drag supersonic flights. In the present study, aerodynamic analysis of a two-dimensional stagger Bussmann biplane (staggered upper element by 0.5c) at zero degrees angle of attack with trailing edge flap ...
Patidar Vijay Kumar, Joshi Sudhir
doaj  

Unsteady Aerodynamics of the Retropropulsion Reentry Burn of Vertically Landing Launchers

, 2023
During the vertical descent and landing of a launcher first stage with the aid of retropropulsion, commonly two main propulsive deceleration maneuvers are performed: the reentry burn in high altitudes at hypersonic to supersonic speeds and the landing ...
Ali Gülhan, Gülhan, Ali, Marwege, A., Gülhan, A., Marwege, Ansgar, Ansgar Marwege   +5 more
core   +1 more source

Low order reconstruction and modeling of supersonic parachute unsteady aerodynamics [PDF]

, 2023
openThis thesis is written to evaluate the results obtained by the Proper Orthogonal Decomposition (POD) reconstruction around a supersonic parachute during the reentry of a capsule in Martian atmosphere, based on the ExoMars mission. In particular, this
NIZZARDO, SAMUELE
core  

Numerical Study of a Three Dimensional Interaction between two bow Shock Waves and the Aerodynamic Heating on a Wedge Shaped Nose Cone

IOP Conference Series: Materials Science and Engineering, 2017
This paper presents a numerical investigation on the three-dimensional interaction between two bow shock waves in two environments, i.e. ground high-enthalpy wind tunnel test and real space flight, using Fluent 15.0. The first bow shock wave, also called induced shock wave, which is generated by the leading edge of a hypersonic vehicle.
N Wu, J H Wang, L Shen
openaire   +1 more source