本研究主要目的探討在紊性入流下兩圓球跡流之間的交互作用與加乘性，並與單一球體比較。實驗分為兩大部分：單球體與雙球體並排，測試的範圍為雷諾數控制在149-360之間，入流的紊流強度分為三種，分別是1.5%、2.5%與4%。由實驗結果得知，在三種不同入流紊流強度下，速度與紊流強度兩部份線性相加的理論值與實驗值相符，均可得到線性加乘的結果，其性質與單顆球體跡流相似。

The purpose is to study the interaction between two sphere wakes at moderate Reynolds numbers in a turbulent environment; and compare with a single sphere. The experiment has two parts, single sphere and side by side. The test range: sphere Reynolds numbers from 149 to 360, inflow turbulent intensity from 1.5% to 4%. The result of this study shows that in the different of inflow turbulent intensity, velocity and turbulent intensity has linear superposition effects. It’s property similar to single sphere.

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