Further development of the IAR two-variable boundary-interference correction method for low-speed wind tunnel data

Mapping Intimacies ◽

10.2514/6.2002-884 ◽

2002 ◽

Cited By ~ 7

Author(s):

K. Cooper ◽

M. Mokry

Keyword(s):

Wind Tunnel ◽

Correction Method ◽

Variable Boundary ◽

Low Speed ◽

Interference Correction ◽

Wind Tunnel Data ◽

Low Speed Wind Tunnel ◽

Further Development

Download Full-text

Extensions to Maskell’s theory for blockage effects on bluff bodies in a closed wind tunnel

The Aeronautical Journal ◽

10.1017/s0001924000012380 ◽

2001 ◽

Vol 105 (1050) ◽

pp. 409-418 ◽

Cited By ~ 27

Author(s):

J. E. Hackett ◽

K. R. Cooper

Keyword(s):

Wind Tunnel ◽

Flat Plate ◽

Correction Method ◽

The Other ◽

Bluff Bodies ◽

Low Speed ◽

Test Conditions ◽

Lift And Drag ◽

Low Speed Wind Tunnel

Abstract Extensions to Maskell’s original correction method, developed over several years, are consolidated and designated ‘Maskell III’. The procedures were applied to dedicated tests on a family of flat-plate wing models in a small, low-speed wind tunnel at NRC. Test conditions included angles of attack from -10° to 110° and models of up to 16% of tunnel area. Off-centre tests were included with model-to-wall distances down to 0.72 chords. Corrected lift and drag data correlated well between models of different sizes and at different offsets from the tunnel centreline. Comparisons are made with corrections using the pressure-signature and two-variable methods, emphasising post-stall conditions. These showed that the ‘Maskell III’ procedures, which require minimal input, correlated as well as the other methods for most model sizes and positions in the tunnel.

Download Full-text

Numerical Evaluation of Contemporary Low-Speed Wind Tunnel Contraction Designs

Journal of Fluids Engineering ◽

10.1115/1.2771578 ◽

2007 ◽

Vol 129 (9) ◽

pp. 1241-1244 ◽

Cited By ~ 6

Author(s):

Con J. Doolan

Keyword(s):

Wind Tunnel ◽

Design Solution ◽

Flow Area ◽

Flow Solver ◽

Low Speed ◽

Order Polynomial ◽

Outlet Flow ◽

Wind Tunnel Data ◽

Fifth Order ◽

Low Speed Wind Tunnel

A potential flow and viscous flow solver have been coupled to produce a robust computational tool useful for the design of low-speed wind tunnel contractions. After validation against published numerical and experimental wind tunnel data, the method is used to evaluate recently proposed contraction shapes from the literature. The results show that, on balance, a fifth-order polynomial provides a good design solution. Newly proposed shapes will either improve available flow area at the expense of contraction outlet flow uniformity or vice versa.

Download Full-text