👉 The km fluid, also known as the Kármán vortex street, is a phenomenon observed in fluid dynamics where alternating vortices are shed from a bluff body (an object with no special aerodynamic features) as it moves through a fluid, typically air. This occurs when the flow separates from the body's surface, creating a series of swirling vortices that alternate in direction downstream. The pattern of these vortices forms a staggered, or "street-like," arrangement in the wake of the object, which is why it's often referred to as a vortex street. This phenomenon is significant in various engineering applications, influencing the design of structures like bridges and buildings to mitigate potential structural damage caused by vortex-induced vibrations.
