dBC

dBC is an acronym that can denote several concepts across different disciplines; there is no single universal definition. The most established use appears in applied mathematics and engineering, where dBC stands for dynamic boundary condition. A dynamic boundary condition is a type of boundary condition for partial differential equations in which the boundary values evolve over time or depend on the solution itself. It is used to model systems where the boundary exchanges with the interior state in a time-dependent way, such as heat exchange with a moving ambient temperature, or fluid-structure interaction with a flexible boundary. In computational simulations, dBCs are implemented to capture non-static interactions at domain boundaries and can be contrasted with Dirichlet boundary conditions (often abbreviated DBC) and Neumann boundary conditions.

Beyond this mathematical usage, dBC may occur as an internal shorthand within specific organizations, projects, or publications. In those cases, the meaning is defined locally and is not standardized, so readers should refer to the source for explicit definition.

Related terms include DBC for Dirichlet boundary condition, and the broader category of boundary conditions in differential equations.