Simulation model of the system for ensuring the intraclimatic characteristics of clean industrial premises of space industry enterprises

The creation of modern products of rocket and space technology is provided at the enterprises of the space industry by a large-scale production and technological complex that unites the main production and auxiliary units, engineering, technological and operational services that perform complex tasks to improve the quality and reliability of products. The most important operations of the technological processes of assembly and testing of spacecraft are carried out in the so-called “clean rooms” (PE), in which the concentration of aerosol dust particles is regulated by the regulatory industry documentation, as well as the parameters of the temperature and humidity regime are set. In order to control the internal climatic condition of clean rooms and control the operation of heat and power equipment for the appropriate purpose, it is proposed to develop a digital twin of a production clean room and a system for maintaining the stability of the internal climatic characteristics of this room, taking into account the ongoing technological processes and individual operations with a large amount of functionality. As an initial model of this system, a simulation model of the object of study is considered, which is a clean room located in a typical industrial building. The boundary conditions of the model are established, the main factors of the heat and humidity state of the internal volume are determined, a method for calculating heat flows from various heat sources is developed. Taking into account the aerodynamic characteristics of the ventilation equipment, recommendations are presented for the mathematical determination of the parameters of air flows (inflow and removal of air masses during the operation of ventilation equipment). As a result of the development of computational methods, a closed system of implicit nonlinear equa- tions is obtained, which is solved by numerical bisection methods with a given accuracy. The simulation model of the state of emergency is the basic basis for constructing a digital twin of an object, the concept of which assumes that the object can be represented as a physical and virtual system. At the same time, the display and interaction of real and virtual (digital) objects makes it possible to form specific recommendations for maintaining the required parameters (temperature, humidity, flow rate), optimizing the operating modes and maintenance of a real clean production room for the assembly and testing of modern competitive spacecraft.