The Effect of Turbulence on the Drag of Flat Plates (1937)
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ainst turbulence. Determinations made in 1932, shown on the same figure, agree well with those 1.28 1.24 Reynolds Number /O'^ Disk and spindle Figure 3.—Drag coefficients for 2- by 12-inch flat plate for various Reynolds Num- bers. The length term in the expression for Reynolds Number is the width… … Percent turbulence Figure 5.—Relation between percentage turbulence and pressure coefficient for 3-inch diameter disk. of 1935. Extrapolating to zero turbulence, we find a drag coefiicient of 1.246. Since wind tunnels may vary in tm-bulence from near zero to 2 percent or possi- bly more, a…
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