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Vortex streets behind circular cylinders and fiat plates were investigated experimentally in a water tank. Photography and hot-wire techniques were used. The important points resulting from the investigation are as follows. (1) Walls increase the stability of the wake. (2) Two parallel walls have a compressing effect on the vortex street. (3) The vortex street of a single row is formed near a single plane wall. (4) Not only laminar wakes but also turbulent wakes show a strong tendency to form the Kármán vortex street. (5) When a certain periodic disturbance is given to a wake, a stable symmetrical vortex street are formed. (6) Vortex filaments behind tapered cylinders and whirling cylinders are straight but inclined to the cylinder axis.
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Sadatoshi Taneda (1965) studied this question.
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