Experimental and numerical investigations of unsteady aerodynamic derivatives for a generic lambda wing UCAV configuration
Sign Up to like & getrecommendations! Published in 2019 at "CEAS Aeronautical Journal"
DOI: 10.1007/s13272-019-00426-w
Abstract: Experimental and numerical investigations have been conducted to analyze the unsteady aerodynamic and flight mechanical behavior of a 53° flying wing configuration representing a generic unmanned combat air vehicle (UCAV). The considered vehicle is named… read more here.
Keywords: numerical investigations; ucav configuration; unsteady aerodynamic; wind tunnel ... See more keywords
Parametric reduced-order modeling of unsteady aerodynamics for hypersonic vehicles
Sign Up to like & getrecommendations! Published in 2019 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2019.01.035
Abstract: Abstract A novel parametric reduced-order model (ROM) is proposed for efficiently predicting hypersonic unsteady aerodynamic responses under different flight conditions. The construction of the ROM is realized by computational fluid dynamics (CFD) simulations under the… read more here.
Keywords: reduced order; order; rom; aerodynamics ... See more keywords
Strategy for the determination of unsteady aerodynamic forces on elongated bodies in grid-generated turbulent flow
Sign Up to like & getrecommendations! Published in 2020 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2019.109939
Abstract: Abstract In this study, we developed a general method for estimating the unsteady aerodynamic forces on elongated bodies in grid-generated turbulent flow. The key to this method is the identification of the one-wavenumber aerodynamic transfer… read more here.
Keywords: unsteady aerodynamic; forces elongated; elongated bodies; turbulent flow ... See more keywords
Unsteady aerodynamic effects in small-amplitude pitch oscillations of an airfoil
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2018.04.009
Abstract: Abstract High-fidelity wall-resolved large-eddy simulations (LES) are utilized to investigate the flow-physics of small-amplitude pitch oscillations of an airfoil at R e c = 100 , 000 . The investigation of the unsteady phenomenon is… read more here.
Keywords: unsteady aerodynamic; oscillations airfoil; small amplitude; amplitude pitch ... See more keywords
Steady and unsteady aerodynamic forces on a long-span membrane structure
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Wind Engineering and Industrial Aerodynamics"
DOI: 10.1016/j.jweia.2019.06.018
Abstract: Abstract This paper reports the steady and unsteady (motion-induced) aerodynamic forces on long-span roofs based on computational fluid dynamics (CFD) analysis with a large eddy simulation (LES). Three types of roofs, i.e., flat, cylindrical, and… read more here.
Keywords: long span; forces long; steady unsteady; roof ... See more keywords
Unsteady Aerodynamic Modeling and Analysis of Load Distribution for Helicopter Rotor Blades
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Aerospace Engineering"
DOI: 10.1061/(asce)as.1943-5525.0001355
Abstract: AbstractThe complexity of the kinematics and aerodynamics of rotors is a challenging problem for achieving accurate modeling for prediction of rotor loads. The present paper describes an unsteady a... read more here.
Keywords: modeling analysis; unsteady aerodynamic; modeling; rotor ... See more keywords
Deep Learning Predictions of Unsteady Aerodynamic Loads on an Airfoil Model Pitched Over the Entire Operating Range
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Fluids"
DOI: 10.1063/5.0139907
Abstract: For the design and certification of wind turbines, it is essential to provide fast and accurate unsteady aerodynamic load prediction models for the whole operational range of angle of attack, up to 180o for vertical-axis… read more here.
Keywords: airfoil model; unsteady forces; range; deep learning ... See more keywords
Modeling of unsteady aerodynamic characteristics at high angles of attack
Sign Up to like & getrecommendations! Published in 2019 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/0954410018776527
Abstract: An improved model to express the unsteady aerodynamic characteristics at high angles of attack is presented in this paper. The proposed aerodynamic model is expressed on the basis of a progressive state-space representation and Taylor’s… read more here.
Keywords: unsteady aerodynamic; aerodynamic characteristics; high angles; angles attack ... See more keywords
Unsteady Aerodynamic Optimization of Airfoil for Cycloidal Propellers Based on Surrogate Model
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Aircraft"
DOI: 10.2514/1.c033649
Abstract: An effective unsteady aerodynamic-optimization method of airfoil for cycloidal propellers is developed. Firstly, the class-function/shape-function transformation parameterization method is adopted ... read more here.
Keywords: cycloidal propellers; unsteady aerodynamic; airfoil cycloidal; aerodynamic optimization ... See more keywords
Alleviating Unsteady Aerodynamic Loads with Closed-Loop Flow Control
Sign Up to like & getrecommendations! Published in 2018 at "AIAA Journal"
DOI: 10.2514/1.j056817
Abstract: The practical benefits and issues related to controlling unsteady loads in gusting flows with active flow control actuators are discussed. Recent methods used to model the response of flight and ro... read more here.
Keywords: unsteady aerodynamic; flow control; control; aerodynamic loads ... See more keywords
Regularization for Adjoint-Based Unsteady Aerodynamic Optimization Using Windowing Techniques
Sign Up to like & getrecommendations! Published in 2021 at "AIAA Journal"
DOI: 10.2514/1.j059983
Abstract: Unsteady aerodynamic shape optimization presents new challenges in terms of sensitivity analysis of time-dependent objective functions. In this work, we consider periodic unsteady flows governed by... read more here.
Keywords: optimization; regularization adjoint; aerodynamic optimization; based unsteady ... See more keywords