Results 41 to 50 of about 179 (124)

INDUSTRIAL CFD SIMULATION OF AERODYNAMIC NOISE [PDF]

open access: yes, 2008
Real challenges to suppress undesirable fluid-excited acoustics are posed by a wide variety of engineering disciplines. Noise regulations, passenger comfort and component stability are motivators which are continuing to stimulate substantial efforts ...
Caridi, Domenico
core   +1 more source

Evaluating Pulsejet Engine Efficiency Through Cruise Missile Flight Characteristic Modeling Using the Pulsejet‐Sim Online Program

open access: yesInternational Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
A mathematical model and software for online modeling of the parameters and characteristics of a cruise missile with a pulsejet engine to evaluate the potential use of this type of engine in high‐speed unmanned aerial vehicles (UAVs) were developed. The model describes the acceleration after launch and the steady horizontal flight of a cruise missile ...
Alexander Khrulev   +2 more
wiley   +1 more source

Stall Delay and Performance Enhancement in a Transonic Axial Compressor Using Self‐Recirculating Flow Control

open access: yesInternational Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
Two passive self‐recirculating flow control designs were manufactured and tested on a single stage transonic axial compressor with the goal of improving stall margin with a minimal penalty to efficiency where previous axial slot and circumferential groove casing treatments were unsuccessful. This study distinguishes itself from previous CFD simulations
Darius V. Ahmadi   +4 more
wiley   +1 more source

Intelligent Ascent Trajectory Optimization via Behavioral Cloning‐Augmented Reinforcement Learning From Demonstrations

open access: yesInternational Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
Traditional ascent trajectory optimization methods for hypersonic vehicles suffer from a high computational burden. This paper proposes an intelligent optimization algorithm based on deep reinforcement learning, where the offline‐trained neural network enables fast trajectory generation and online deployment while maintaining all terminal, control, and
Qingji Jiang   +4 more
wiley   +1 more source

Assessing the impact of aerodynamic modelling on manoeuvring aircraft

open access: yes, 2014
This paper investigates the impact of aerodynamic models on the dynamic response of a free-flying aircraft wing. Several options for the aerodynamics are evaluated, from two-dimensional thin aerofoil aerodynamics and unsteady vortex-lattice method up to ...
Hesse, H.   +16 more
core   +1 more source

Experimental aeroacoustics study on jet noise reduction using tangential air injection [PDF]

open access: yes, 2011
PhDAircraft jet exhausts are a source of undesirable noise and continue to be an area of investigation driven by increasingly stringent regulation. The noise is produced by the unsteady mixing of the jet with the surrounding air and is dominated by the ...
Ahmad, Arsalan
core   +1 more source

The finite element method in low speed aerodynamics [PDF]

open access: yes, 1975
The finite element procedure is shown to be of significant impact in design of the 'computational wind tunnel' for low speed aerodynamics. The uniformity of the mathematical differential equation description, for viscous and/or inviscid, multi ...
Manhardt, P. D., Baker, A. J.
core  

Synthetic Turbulence Generation for LES on Unstructured Cartesian Grids [PDF]

open access: yes, 2007
A parallel CFD code to solve incompressible fluid flow on unstructured Cartesian meshes has been developed almost from ground up. Turbulence statistics have been computed using the Large Eddy Simulation technique.
Bin Mohamad Badry, Ahmad Badarudin
core   +2 more sources

Experimental and numerical studies of mild combustion processes in model reactors [PDF]

open access: yes, 2006
Lo scopo della tesi è stato lo studio del comportamento di reattori chimici elementari nelle condizioni tipiche della combustione “dolce”. L’attività è stata essenzialmente di tipo sperimentale ed ha riguardato sia lo studio cinetico e dinamico di un ...
Sabia, Pino
core   +1 more source

Aerodynamics of delta wing-body Combinations at high angles of attack - A project proposal [PDF]

open access: yes, 1985
Aerodynamics of highly swept wing-body configurations are dominated by vortex flows at high angles of attack . This research is proposed with a view to improving our general understanding on the nature of the vortical interactions on delta wing-body ...
Viswanath , PR
core  

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