Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Daigo Maruyama"'
We introduce a framework for statistical inference of the closure coefficients using machine learning methods. The objective of this framework is to quantify the epistemic uncertainty associated with the closure model by using experimental data via B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f475aa1716bb24f248bd55fd778c19f
https://elib.dlr.de/186003/
https://elib.dlr.de/186003/
Publikováno v:
Uncertainty Management for Robust Industrial Design in Aeronautics ISBN: 9783319777665
This chapter introduces two popular surrogate modeling methods which can be used to quantify uncertainties such as statistics of the aerodynamic coefficients from scattered data obtained by computational fluid dynamics (CFD) simulations. One is Krigi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6ea828431bccadcd05f1d2d15dcbfdc
https://elib.dlr.de/125224/
https://elib.dlr.de/125224/
Publikováno v:
Uncertainty Management for Robust Industrial Design in Aeronautics ISBN: 9783319777665
A large number of geometrical uncertainties of a transonic RAE2822 airfoil are parameterized by a truncated Karhunen–Loeve expansion (KLE), and the influence of the truncation on the statistics of aerodynamic quantities is investigated both in term
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e3d80f3986f258cb45df4e32ae5db71
https://doi.org/10.1007/978-3-319-77767-2_51
https://doi.org/10.1007/978-3-319-77767-2_51
Publikováno v:
Uncertainty Management for Robust Industrial Design in Aeronautics ISBN: 9783319777665
Different surrogate models are compared in terms of their efficiency in estimating statistics of aerodynamic coefficients of the RAE2822 airfoil due to geometric input uncertainties. A comparison with direct integration and polynomial chaos methods i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da3ab8099906637956dcad50a3da673e
https://doi.org/10.1007/978-3-319-77767-2_13
https://doi.org/10.1007/978-3-319-77767-2_13
Publikováno v:
Uncertainty Management for Robust Industrial Design in Aeronautics ISBN: 9783319777665
Efficient surrogate modeling approaches are presented in the context of robust design. The type of surrogate model, and the number and distribution of the sample points are discussed. The test case is the UMRIDA BC-02 airfoil with two uncertain opera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55bc15baf8405a5deafe326b182f8e81
https://doi.org/10.1007/978-3-319-77767-2_43
https://doi.org/10.1007/978-3-319-77767-2_43
Publikováno v:
Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016).
This paper deals with developing an efficient Robust Design Optimization (RDO) framework. The goal is to obtain an aerodynamic shape that is less sensitive to small random geometry perturbations and to uncertain operational conditions. The initial sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dc6823f85bb57cdb14fa311665cc8e5
https://doi.org/10.7712/100016.2450.8838
https://doi.org/10.7712/100016.2450.8838
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 226:217-238
Aiming to realize a low-drag supersonic transport, Busemann biplane concept was adopted in this study. Two- and three-dimensional (2D and 3D) biplanes were analysed and designed to improve their aerodynamic performance using computational fluid dynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce0fe5419748c3fce624b25102f7e73d
https://doi.org/10.1177/0954410011404656
https://doi.org/10.1177/0954410011404656
Publikováno v:
Progress in Aerospace Sciences. 47:53-87
One of the fundamental problems preventing commercial transport aircraft from supersonic flight is the generation of strong sonic booms. Sonic booms are the ground-level manifestation of shock waves created by airplanes flying at supersonic speeds. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c031b0e0a841b39541e7e645adc4930
https://doi.org/10.1016/j.paerosci.2010.09.003
https://doi.org/10.1016/j.paerosci.2010.09.003
Publikováno v:
Journal of Aircraft. 46:1906-1918
In supersonic flight, airfoils generate strong sonic boom and wave drag accompanied by shock waves and expansion waves. The Busemann biplane is representative of an airfoil that has the possibility of realizing low drag. With the aim of realizing a n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5f72811b3d451194714f96a823b9d14
https://doi.org/10.2514/1.40313
https://doi.org/10.2514/1.40313
Publikováno v:
Shock Waves. 18:437-450
Supersonic biplanes can possibly achieve low-boom and low-drag supersonic flights. In the present study, aerodynamic analysis and design of two-dimensional (2-D) biplanes were investigated with the help of computational fluid dynamics (CFD) tools. By
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2797a1f72566c0c27a4214d6e57fd1f0
https://doi.org/10.1007/s00193-008-0175-5
https://doi.org/10.1007/s00193-008-0175-5