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A transducer for determining dynamic drag and lift coefficients in wind tunnels
Author(s) -
Kanda J.,
Royles R.
Publication year - 1978
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1978.tb01895.x
Subject(s) - airfoil , lift (data mining) , transducer , lift coefficient , acoustics , bluff , drag , strain gauge , drag coefficient , lift to drag ratio , wind tunnel , mechanics , engineering , structural engineering , turbulence , physics , computer science , reynolds number , data mining
A transducer is described capable of determining dynamic drag and lift coefficient for bluff bodies in air flow. Such factors and their frequency dependence are becoming increasingly important in the wind excitation of structures. The device incorporates facilities for varying the angle of attack on the model structure surface and although developed for studies on bluff bodies it can be adapted readily to other bodies of uniform section including aerofoil, circular cylindrical, and more general shapes. Dynamic output is derived from electric foil strain gauges and circuitry yielding measurements of good linearity, repeatability and stability.