Abstract
Abstract A double-row crossed cylindrical structure is used as a basic net unit, and the simulation method is used to simulate the winding process of the double-rowed crossed cylinders at different Reynolds numbers, to study and analyze the change of the surrounding flow field with Reynolds number when the uniform flow passes through the net structure, and to compare with the single cylinder. It is found that the fluid passing through the intersection of the cylinders will form a return flow at the back side, and the fluid will extend to the cylinder after the return flow to the near wall of the structure to develop into a spreading flow. The spreading flow makes the distance from the vortex shedding position to the structure surface of the double-row crossed cylinder significantly larger than that of the single cylinder.
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