Fig.12 N.A.C.A. Technical Memorandum Ho. 868 … vi Rekr=3.3xl0!:) Be v Figure 12.- Determination of turbulence factor from sphere irag measurements (200 ani 300 mm (7.87 and 11.31 in.)iiameter). Critical Reynolds Nu.nber:Rk (cw = 0.3) = 3.3X105
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