Print Email Facebook Twitter A theoretical exploration of the capabilities of 2D flexible wall test sections for 3D testing Title A theoretical exploration of the capabilities of 2D flexible wall test sections for 3D testing Author Smith, J. Institution National Aerospace Laboratory NLR Date 1984-02-29 Abstract The applicability of two-dimensional flexible solid wall test sections for three-dimensional testing is theoretically investigated for linearized subsonic flow. The method uses known interference velocity distributions along a targer line (derived from a method of images for this particular study). From these, wall shapes are calculated that reduce or even eliminate the axial gradients of wall-induced upwash and blockage along this target line. The examples of residual wall interference presented, show that these gradients, as well as the overall blockage level, can substantially be reduced by means of quite acceptable wall displacements and test section lengths, even for half model testing. Subject wind tunnel wallswind tunnelsadaptive Walls wind tunnelssubsonic flowtransonic flowblockingsemi span modelscomputational fluid dynamicsthree-dimensional flowaerodynamic interferencepanel method (fluid dynamics)potential flowtest section lengthwall displacementwind tunnel models To reference this document use: http://resolver.tudelft.nl/uuid:3e67e717-45d9-455f-80e8-b7f34e85f6b3 Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR MP 84018 U Part of collection Aerospace Engineering Reports Document type report Rights (c) 1984 National Aerospace Laboratory NLR Files campus only