Results 381 to 390 of about 1,566,376 (417)
Some of the next articles are maybe not open access.
Day 2 Sat, March 21, 2009, 2009
In recent years a number of Dynamic Velocity Prediction Programs (DVPPs), which allow studying the behaviour of a yacht while tacking, have been developed. The aerodynamic models used in DVPPs usually suffer from a lack of available data on the behaviour of the sail forces at very low apparent wind angles where the sails are flogging.
Richard G.J. Flay +3 more
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In recent years a number of Dynamic Velocity Prediction Programs (DVPPs), which allow studying the behaviour of a yacht while tacking, have been developed. The aerodynamic models used in DVPPs usually suffer from a lack of available data on the behaviour of the sail forces at very low apparent wind angles where the sails are flogging.
Richard G.J. Flay +3 more
openaire +2 more sources
Upwind preview to a horizontal axis wind turbine: a wind tunnel and field-scale study
, 2016Data collected at the Eolos wind research facility and in the Saint Anthony Falls Laboratory atmospheric boundary layer wind tunnel are used to study the impact of turbulent inflow conditions on the performance of a horizontal axis wind turbine on flat ...
K. Howard, M. Guala
semanticscholar +1 more source
Wind Tunnels: Design Considerations in Wind Tunnel Testing of Cyclists
2019This chapter describes and summarizes design considerations required to develop an accurate and repeatable wind tunnel-based testing program to measure and optimize the aerodynamic drag of athletes, their apparel, and competition equipment. The chapter focuses on drag measurement techniques for the sport of road cycling with the intent that similar ...
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, 2015
Currently, there are three different methodologies for evaluating the aerodynamics of trains; full-scale measurements, physical modeling using wind-tunnel, and moving train rigs and numerical modeling using computational fluid dynamics (CFD).
Justin Morden, H. Hemida, C. Baker
semanticscholar +1 more source
Currently, there are three different methodologies for evaluating the aerodynamics of trains; full-scale measurements, physical modeling using wind-tunnel, and moving train rigs and numerical modeling using computational fluid dynamics (CFD).
Justin Morden, H. Hemida, C. Baker
semanticscholar +1 more source
Journal of the Aeronautical Sciences, 1943
The problem of cooling wind tunnels has been analyzed. I t lias been found that the turning vanes and the throat of the tunnel are the best places for using surface cooling. As the operating speeds of tunnels increase, it becomes more and more difficult to cool the tunnel surfaces, and it becomes necessary to install a radiator in the tunnel.
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The problem of cooling wind tunnels has been analyzed. I t lias been found that the turning vanes and the throat of the tunnel are the best places for using surface cooling. As the operating speeds of tunnels increase, it becomes more and more difficult to cool the tunnel surfaces, and it becomes necessary to install a radiator in the tunnel.
openaire +2 more sources
A computer-controlled wind tunnel
Journal of Wind Engineering and Industrial Aerodynamics, 1993Abstract Many types of meteolorogical, environmental and boundary layer wind tunnels have been constructed to simulate atmospheric phenomena on buildings, structures and transport of air pollutants. New types of 2 and 3-dimensional wind tunnels have been constructed in our laboratory, which has multi-fans controlled by a computer.
A Nishi, H Miyagi, K Higuchi
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Variable Camber Compliant Wing - Wind Tunnel Testing
, 2015This paper describes initial wind tunnel testing of a Variable Camber Compliant Wing developed by the U.S. Air Force Research Laboratory. The current version of the Variable Camber Compliant wing has a two foot chord length and was designed to ...
Christopher R. Marks +5 more
semanticscholar +1 more source
1973
BEFORE proceeding to the results of the experimental work done in sand moving under controlled conditions through a wind tunnel, it may be of interest to describe shortly the final form of the tunnel with which the work was carried out. The design had to fulfil a number of special requirements, and as no previous experimental work on the subject had ...
openaire +2 more sources
BEFORE proceeding to the results of the experimental work done in sand moving under controlled conditions through a wind tunnel, it may be of interest to describe shortly the final form of the tunnel with which the work was carried out. The design had to fulfil a number of special requirements, and as no previous experimental work on the subject had ...
openaire +2 more sources
2020
To begin with, the generation of a supersonic flow requires a convergent duct and an upstream/downstream pressure ratio sufficient to achieve sonic velocity at the duct minimum section or throat.
Patrick Gilliéron +5 more
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To begin with, the generation of a supersonic flow requires a convergent duct and an upstream/downstream pressure ratio sufficient to achieve sonic velocity at the duct minimum section or throat.
Patrick Gilliéron +5 more
openaire +2 more sources
Investigation of Ship Topside Modeling Practices for Wind Tunnel Experiments
, 2015The aerodynamic flow field around a ship’s topside is important to assess ship performance and survivability, evaluate the ship operating envelope, and for launch and recovery of manned and unmanned vehicles.
Nicholas C. Rosenfeld +2 more
semanticscholar +1 more source