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NACA-TR-1150

Considerations on the effect of wind-tunnel walls on oscillating air forces for two-dimensional subsonic compressible flow

contributor authorNASA - National Aeronautics and Space Administration (NASA)
date accessioned2017-09-04T17:15:40Z
date available2017-09-04T17:15:40Z
date copyright01/01/1953
date issued1953
identifier otherZDRXYDAAAAAAAAAA.pdf
identifier urihttp://yse.yabesh.ir/std/handle/yse/139066
description abstractThis report treats the effect of wind-tunnel walls on the oscillating two-dimensional air forces in a compressible medium. The walls are simulated by the usual method of placing images at appropriate distances above and below the wing. An important result shown is that, for certain conditions of wing frequency, tunnel height, and Mach number, the tunnel and wing may form a resonant system so that the forces on the wing are greatly changed from the condition of no tunnel walls. It is pointed out that similar conditions exist for three-dimensional flow in circular and rectangular tunnels and apparently, within certain Mach number ranges, in tunnels of nonuniform cross section or even in open tunnels or jets.
languageEnglish
titleNACA-TR-1150num
titleConsiderations on the effect of wind-tunnel walls on oscillating air forces for two-dimensional subsonic compressible flowen
typestandard
page10
statusActive
treeNASA - National Aeronautics and Space Administration (NASA):;1953
contenttypefulltext
subject keywordsACOUSTIC
subject keywordsAIRFOILS
subject keywordsBOUNDARY
subject keywordsCOMPUTATIONAL
subject keywordsDYNAMICS
subject keywordsEQUATIONS
subject keywordsFLOW
subject keywordsFLUID
subject keywordsFLUTTER
subject keywordsINTERFERENCE
subject keywordsPERTURBATION
subject keywordsPROBLEMS
subject keywordsPROPERTIES
subject keywordsTESTS
subject keywordsTUNNEL
subject keywordsVALUE
subject keywordsWALL
subject keywordsWALLS
subject keywordsWAVE
subject keywordsWIND


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