SUBSTANTIATION OF SCALES OF ACOUSTIC VALUES SIMILARITY IN RECIRCULATION AQUATIC SYSTEMS FOR GROWING HYDROBIONTS

Alexander A. Nedostup; Alexey O. Razhev; Evgeniy I. Khrustalyov

doi:doi:10.24143/2073-5529-2020-4-29-36

UDC 53

SUBSTANTIATION OF SCALES OF ACOUSTIC VALUES SIMILARITY IN RECIRCULATION AQUATIC SYSTEMS FOR GROWING HYDROBIONTS

Published в Vestnik of Astrakhan State Technical University. Series: Fishing industry · Issue 4, 2020 · Pages 29–36 · Rubrics: WATER BIORESOURCES AND THEIR RATIONAL USE

DOI 10.24143/2073-5529-2020-4-29-36

Received: 16.12.2020 Accepted: 16.12.2020 Published: 16.12.2020

Authors

Alexander A. Nedostup ¹ · Alexey O. Razhev ² · Evgeniy I. Khrustalyov ³

1 Kaliningrad State Technical University (Candidate of Technical Sciences, Assistant Professor; Head of the Department of Industrial Fishery)

2 Kaliningrad State Technical University (Candidate of Sciences in Technology; Leading Researcher)

3 Kaliningrad State Technical University (Candidate of Biology, Assistant Professor; Professor of the Department of Aquaculture, Biology and Diseases of Hydrobionts)
Russian Federation

ABSTRACT

The article is devoted to studying the problems of physical modeling of acoustic and hydroacoustic waves, which are reflected from hydrobionts in recirculation aquatic systems (RAS), as well as open aquaculture cages (OAC). The behavior of aquatic organisms in RAS and OAC is so complex that it is difficult to be described mathematically because it is necessary to determine the temporal and spatial parameters of hydrobionts and to provide favourable conditions for aquatic organisms in RAS and OAC close to the natural habitat, including the acoustic regime. The use of simulation and physical modeling for calculating the acoustic quantities will make it possible to use machine vision to and optimize technological processes, to increase the productivity of the ultrasonic and ultrasonic treatment pools, to raise productivity and to reduce costs. The aim of acoustic quantities similarity in RAS and OAC is to determine the parameters of sound sources, the reflecting ability of hydrobionts with different characteristics (length, volume, density and others). In the problems of acoustic quantities it is required to ensure the coincidence of mechanical and acoustic processes. It is necessary to reduce the quantities dependent on the dimensional attributes of the object (length of a sound wave, sound power, sound energy, sound intensity, speed of sound, frequency, etc.) to their independent dimensionless form. When studying the behavior of aquatic organisms in RAS and OAC it is important to take into account mechanical, hydrodynamic, electrodynamic, optical and light similarities. There have been proposed the additional similarity scales for acoustic values, the methods for their calculation and the graphs of their dependence on the geometric scale Cl. Knowing the scale of Cl, it is possible to determine the scale effect

KEYWORDS

acoustic quantities scale physical similarity recirculation aquatic system open aquaculture cage hydrobionts behavior of hydrobionts

Information Text References

Authors:

1. Kaliningrad State Technical University (Candidate of Technical Sciences, Assistant Professor; Head of the Department of Industrial Fishery)

2. Kaliningrad State Technical University (Candidate of Sciences in Technology; Leading Researcher)

3. Kaliningrad State Technical University (Candidate of Biology, Assistant Professor; Professor of the Department of Aquaculture, Biology and Diseases of Hydrobionts)

Russian Federation

Type:

Article

Pages:

from 29 to 36

Status:

Published

Subject area:

UDC 53

Language:

Russian

Keywords:

acoustic quantities, scale, physical similarity, recirculation aquatic system, open aquaculture cage, hydrobionts, behavior of hydrobionts

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References

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SUBSTANTIATION OF SCALES OF ACOUSTIC VALUES SIMILARITY IN RECIRCULATION AQUATIC SYSTEMS FOR GROWING HYDROBIONTS

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