Computational fluid dynamics (CFD) is a class of methods of mathematical and computer modeling that is of great scientific and practical importance for solving problems of modeling the interaction of airflows. Airflows can be different in temperature, density, and other physical parameters. CFD is important in the design of climate control systems in industrial, public buildings and premises, the design of life support systems and firefighting.Of particular importance is the problem of modeling the distribution of air masses in premises with obstacles in the form of equipment located in them, as well as in rooms of complex configuration. The article proposes a combined modeling method based on the numerical solution of the Navier-Stokes system of equations. This algorithm is encapsulated in an application created on the Unreal Engine platform - an environment for computer simulation of 3D games. The novelty of the proposed method is the use of the game “engine” to solve important industrial problems in poultry, livestock, design of climate systems. The article shows the possibilities for visualization of the modeling process in the created software product.