Vfinal

Vfinal is a shorthand used across science and engineering to denote the final value of a variable V after a process, reaction, or time evolution ends. It is not a standard unit or constant, but a label for an end-state value that is often contrasted with Vinitial.

In mechanics, Vfinal may refer to the final velocity after acceleration or the terminal velocity of an object moving through a resistive medium. In electrical engineering, Vfinal denotes the steady-state voltage across a circuit element after transient effects have decayed. In fluid dynamics and process engineering, Vfinal can signify the final volumetric flow rate or total volume achieved in a process.

Notation and usage vary by field: Vfinal is frequently used alongside Vinitial, V(t) for time-varying voltage or velocity, and V∞ or V_terminal to indicate the asymptotic value as t approaches infinity. In data analysis and programming, Vfinal is used as a variable name to store the end-state value computed from measurements or simulations.

See also: terminal velocity, steady state, final value, limit, notation.