Modelling Thermochemical Nonequilibrium during Atmospheric Re-Entry

Date

2015-08-27

Author

Pişkin, Tuğba
Eyi, Sinan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

43
views

0
downloads

The gravitational acceleration yields high speed and high energetic re-entries; therefore, temperature values reach enormous degrees. Modelling high speed hypersonic flow such as re-entries requires consideration of all physical phenomena and that of appropriate numerical modelling. Because of high energetic species, real gas assumption is used to define species state characteristics instead of ideal gas assumptions. Chemical, thermal and vibrational nonequilibrium modelling is the main consideration of this study.

URI

https://hdl.handle.net/11511/35874

DOI

https://doi.org/10.2514/6.2015-3978

Collections

Department of Aerospace Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Measurement of the energy density as a function of pseudorapidity in proton-proton collisions at root s=13 TeV Sirunyan, A. M.; et. al. (Springer Science and Business Media LLC, 2019-05-01) A measurement of the energy density in proton-proton collisions at a centre-of-mass energy of sTeV is presented. The data have been recorded with the CMS experiment at the LHC during low luminosity operations in 2015. The energy density is studied as a function of pseudorapidity in the ranges -6.6<<-5.2 and 3.15<||<5.20. The results are compared with the predictions of several models. All the models considered suggest a different shape of the pseudorapidity dependence compared to that observed in the data. ...
ATLAS measurements of the properties of jets for boosted particle searches Aad, G.; et. al. (American Physical Society (APS), 2012-10-15) Measurements are presented of the properties of high transverse momentum jets, produced in protonproton collisions at a center-of-mass energy of &Sqrt;s = 7 TeV. The data correspond to an integrated luminosity of 35 pb1 and were collected with the ATLAS detector in 2010. Jet mass, width, eccentricity, planar flow and angularity are measured for jets reconstructed using the anti-kt algorithm with distance parameters R ¼ 0:6 and 1.0, with transverse momentum pT > 300 GeV and pseudorapidity jj < 2. The measure...
Optimization of flapping airfoils for maximum thrust and propulsive efficiency Tuncer, İsmail Hakkı; Kaya, Muhammed Çağrı (2005-11-01) The thrust and/or propulsive efficiency of a single flapping airfoil is-maximized by using a numerical optimization method based on the steepest ascent. The flapping motion of the airfoil is described by a combined sinusoidal plunge and pitching motion. Optimization parameters are taken to be the amplitudes of the plunge and pitching motions and the phase shift between them at a fixed flapping frequency. Two-dimensional, unsteady, low-speed, laminar, and turbulent flows are computed by using a Navier-Stokes...
Modeling the flapping motion via quasi-steady approach and controlling the longitudinal dynamics of a flapping wing mav Çalış, Özgün; Kurtuluş, Dilek Funda; ARIKAN, KUTLUK BİLGE (2021-09-10) An aerodynamic model in order to simulate and control the flapping-wing micro air vehicle based on the quasi-steady approach and blade element theory is developed to calculate the instantaneous aerodynamic forces and moments. The system dynamics of a 2-D flapping-wing MAV in hover mode are modeled. Control simulations are done for hover, take-off, forward flight and landing conditions. Linear Quadratic Regulator (LQR) and Coefficient Diagram Method (CDM) are used to stabilize the flapping-wing system. The e...
Experimental investigation of flow characteristics of flexible wings with different stiffener orientations in linear translating motion Karakaş, Hasan Halil; Perçin, Mustafa; Department of Aerospace Engineering (2022-8-12) This study experimentally investigates the flow field around the wings, which first accelerate with constant acceleration from the rest and then perform a linear translating motion with constant velocity. Four wings, which are 3D-printed, with a bending stiffness in different directions are examined. The difference in bending stiffness values is achieved by placing stiffeners having different angles with the leading edge on the upper surface of the wing. The stiffeners are printed with wings to obtain well-...

Citation Formats

T. Pişkin and S. Eyi, “Modelling Thermochemical Nonequilibrium during Atmospheric Re-Entry,” 2015, vol. 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35874.