Computer simulation of a hydrostatic seawater density meter

L.A. Krasnodubets, M.N. Penkov

1 Sevastopol State University, RF, Sevastopol, Universitetskaya St., 33

2 Institute of Natural аnd Technical Systems, RF, Sevastopol, Lenin St., 28


DOI: 10.33075/2220-5861-2020-1-71-76

UDC 621.384


     Mathematical models and results of computer simulation of in situ the seawater density measurements with using hydrostatic meters are presented. The models are based on the basic hydrostatic equation and the Pascal equation following from it. These equations provide the necessary mathematical apparatus combining static pressures, density and depth. On this basis, a universal computer model is developed that allows the study of hydrostatic seawater density meters based on two or three pressure sensors, as well as an improved seawater density meter with one differential pressure sensor and a three-axis accelerometer. In an improved meter, the pressure difference is determined by a differential sensor placed in the center of symmetry of a hollow tube of known length, placed in the vertical plane of the ocean environment. The ends of this measuring tube always belong to two horizontal (parallel) surfaces with different static pressures, the difference of which is measured with a differential sensor. The distance between such horizontal surfaces is a function of the angle of deviation of the longitudinal axis of the measuring tube from the vertical. The proposed computer model of the improved meter describes the process of indirectly measuring the density of sea water based on direct measurements of the difference in static pressures at the ends of the measuring tube with a known length and angle of deviation of its longitudinal axis from vertical. To study the processes of measuring the density of seawater as a function of depth, a model of the vertical profile of the ocean environment is developed. The simulation results show the fundamental possibility of building a seawater density meter, which allows in situ measurements.

Key words: seawater density, ocean environment, pressure sensor, hydrostatic meter, mathematical model, computer simulation.

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[IEEE] L. A. Krasnodubets and M. N. Penkov, “Computer simulation of a hydrostatic seawater density meter,” Monitoring systems of environment, no. 1, pp. 71–76, Mar. 2020.

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