👉 The dot fluid, also known as the dot fluid effect or dot fluid model, is a computational fluid dynamics (CFD) technique used to simulate the interaction between a fluid and a solid surface. It simplifies the fluid dynamics problem by representing the fluid near the surface using a "dot" that moves with the fluid flow, thereby capturing the boundary layer behavior accurately without resolving every microscopic detail. The dot fluid model approximates the velocity and pressure fields at any point in the fluid domain by considering the fluid's velocity at the dot's location and its motion relative to the surface. This approach is particularly useful for simulating complex geometries and flow conditions, such as those found in aerodynamics, hydrodynamics, and microfluidics, where detailed resolution of the fluid's behavior near solid boundaries would be computationally prohibitive. By focusing on the essential dynamics at the interface, the dot fluid method offers a balance between accuracy and computational efficiency.
