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The improvement of aerodynamic performance
2017Since the collapse of the first Tacoma Narrows Bridge in 1941 much research has been focussed on the design of road decks that are secure against wind action. This paper reviews the development of aerodynamically stable deck configurations and the use of devices for improving the performance of large bridges as either retrofits or in original design ...
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Aerodynamic factors affecting performance
1997In any precipitator the gas flow carrying the particles which have to be precipitated plays an important role. Gas volume rates between parallel connected chambers should not deviate too much from the average value used for sizing, and the gas flow distribution across the face of each individual chamber should be within certain limits.
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AC75 Aerodynamic Performance Prediction via BEM [PDF]
Journal of Sailing TechnologyAbstract The AC75 class, used in the America’s Cup, is a hydro-foiling racing sailing yacht powered by a double-skin main sail and a single-skin jib. The boat performance is typically predicted by a Velocity Prediction Program (VPP). The aerodynamics are usually modeled with surrogate models of data points collected
Melis, Michele Franscesco +3 more
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Experimental evaluation on vehicle aerodynamic noise performance
International Journal of Vehicle Performance, 2018In this study, a passenger car was tested for its aerodynamic noise performance in terms of sound pressure level in the wind tunnel at Tongji University (Shanghai Automotive Wind Tunnel Center), where the phase microphone array was used along with sound surface microphones and artificial heads combining with the adhesive tape sealing method.
Zhe Shen +4 more
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IMPROVEMENT IN AERODYNAMIC PERFORMANCE OF AIRFOILS USING AERODYNAMIC SHAPE OPTIMIZATION
JP Journal of Heat and Mass TransferThis study demonstrates the application of the discrete adjoint method for aerodynamic shape optimization of the NACA2412 airfoil used in Cessna 172R at moderate Reynolds numbers and low Mach numbers . The open-source CFD solver OpenFOAM is coupled with DAFoam-discrete adjoint with OpenFOAM to efficiently compute the sensitivities of the drag ...
Thi-Hong-Nhi Vuong +3 more
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Aerodynamic Performance Prediction of a Profile in Ground Effect
Volume 2: Dynamics, Vibration and Control; Energy; Fluids Engineering; Micro and Nano Manufacturing, 2014A very detailed experimental case of a reversed profile in ground effect has been selected in the open literature and the available experimental data have been used as reference data for CFD analysis. The CFD approach has been used to predict the aerodynamic performance of the profile at different heights with respect to the ground: from the freestream
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Turbine Aerodynamic Design and Off-Design Performance
2005The turbine component is the power generator in a gas turbine system. As briefly discussed in Chapter 12, within a turbine component, an exchange of mechanical energy (shaft work) with the surroundings takes place. In contrast to compressors, the total energy of the working medium is partially converted into shaft work, thus supplying necessary power ...
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