Computational fluid dynamics (CFD) is an essential tool, which usually uses numerical methods for developing approximations of the governing equations of fluid mechanics in the fluid region of interest.It sufficiently predicts fluid flow, heat transfer, mass transfer, chemical reactions, andrelated phenomena by solving the mathematical equations which govern these processes using numerical methods. Applying the fundamental laws of mechanics to a fluid, a set of coupled non linear partial differential equations is obtained. For most engineering problems these equations are solved analytically. Considering physical characteristics of fluid such as conservation of matter, momentum, and energy etc. throughout the region of interest of that fluid mathematical models are composed. In order to solve easily the simplifying assumptions are made for appropriate initial and boundary

conditions for the problem. To solve the fundamental equation of fluid dynamics, the Navier-Stokes equation and continuity equation, appropriate initial conditions and boundary conditions must be need to be applied. In spite of this, computational fluid dynamics can be used in the many areas of food processing industries for drying, sterilization, mixing, refrigeration etc. Drying is a common food manufacturing process.