Results 271 to 280 of about 147,005 (295)
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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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Improving aerodynamic performance of tall buildings using Fluid based Aerodynamic Modification
Journal of Wind Engineering and Industrial Aerodynamics, 2014Abstract A novel approach is proposed to integrate active air flow control into the assembly of building envelopes in order to affect the interaction between tall buildings and surrounding air flow. The potential benefits of the proposed approach include reduction of embodied energy contained within the building structure, improvement of the overall ...
David Menicovich +5 more
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Aerodynamic performance of augmented supersonic nozzles
Experiments in Fluids, 2020The objective of this study is to understand how internal engine corrugated seals affect the aerodynamic performance of a convergent/divergent supersonic nozzle all the while promoting mixing. These corrugated seals are designed to protrude into the flow to alter the design pressure ratio of the nozzle through changes in area ratio.
Charles E. Tinney +2 more
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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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Aerodynamic technologies to improve aircraft performance
Aerospace Science and Technology, 2013Abstract An Air Transport System has become an indispensable part of Europeʼs economic infrastructure. The Commercial Aeronautics Sector is well aware that it has to find an acceptable balance between the constant fierce competitive pressures upon it and the publicʼs expectations of cheaper fares but reduced environmental impact including community ...
A. Abbas, J. de Vicente, E. Valero
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Aerodynamic Performance of Small Turbocharger Compressors
Volume 3: Turbo Expo 2007, 2007Automotive turbocharger compressors are characterized by small dimensions. These small dimensions make detailed measurements of the flow field inside the compressor very challenging. However, it is very important to investigate and understand the aerodynamic performance of these machines in order to enhance the ability to improve their performance. The
S. Shaaban, J. Seume
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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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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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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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Aerodynamics of High Performance Bicycle Wheels
2008This thesis presents the work undertaken to assess potential improvements in high performance bicycles. There are several wheel options available for elite riders to use in competition and this research has investigated the aerodynamic properties of different wheel type.
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