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Official Journal of the Japan Wood Research Society

Table 2 Estimated values for drag coefficient (C D) using the exponential function

From: In situ drag coefficient measurements for rooftop trees

Upper percent

Norway spruce

Shirakanba

Used for curve fit

10 m/s

30 m/s

10 m/s

30 m/s

10

0.864

0.592

0.300

0.291

30

0.681

0.651

0.201

0.198

50

0.602

0.594

0.155

0.154

100

0.429

0.429

0.066

0.066