SUBSTANTIATION OF SCALES OF LIGHT VALUES SIMILARITY OF RECIRCULATING AQUATIC SYSTEMS FOR GROWING HYDROBIONTS

The article discusses the problems of physical modeling of recirculated aquatic systems (RAS) for cultivating hydrobionts, in particular, the problem of substantiating the rules for similarity of light quantities. The use of ultrasonic testing requires the special growing conditions that are close to the natural habitat of the aquatic organisms, including the light regime. The use of simulation and physical modeling for calculating the light quantities will make it possible to optimize technological processes, increase the productivity of ultrasonic treatment basins, increase efficiency and reduce costs. The main task of the similarity of light values of the ultrasonic ultrasound is to determine the parameters of light sources having different technical characteristics, which greatly complicates the theoretical analysis in developing the ultrasound. An important component of the similarity of light values is preserving the physical nature of the phenomena of the original in a model executed in a size different from natural. In problems of light values it is required to ensure the coincidence of mechanical and light processes. It is necessary to reduce such values, depending on the dimensional characteristics of the object, as luminous flux, heat, heat capacity, thermal conductivity, thermal diffusivity, illumination, etc. to their independent dimensionless form. When designing the ultrasonic ultrasound, the scales of physical characteristics of the hydrodynamic and thermodynamic processes that occur in the ultrasound with dynamic similarity are not enough, as they do not take into account the processes of light flux and illumination that occur in the ultrasound. There have been proposed the additional similarity scales for light quantities, given methods for their calculation and graphs of their dependences on the geometric scale Cl. However, it must be understood that achieving complete similarity is fundamentally impossible, no matter how large the list of similarity criteria is. Knowing the scale of Cl, it is possible to determine the scale effect.