CFD software is the abbreviation of Computational Fluid Dynamics software. It is a software specially used for flow field analysis, flow field calculation and flow field prediction. Through CFD software, it is possible to analyze and display the phenomenon that occurs in the flow field, predict performance in a relatively short period of time, and achieve optimal design effects by changing various parameters.

CFD is developed along with the development of computer technology and numerical computing technology. Simply saying, CFD is equivalent to "virtual" experimentation on a computer to simulate the actual fluid flow. The basic principle is to numerically solve the differential equations that control the fluid flow, and obtain the discrete distribution of the flow field of the fluid flow in the continuous region, so as to approximate simulate the fluid flow.