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I. I. Valov, Yu. P. Kabanov

STUDYING A FORCE ACTION ON A FLAT BOUNDLESS BARRIER FROM A GAS GENERATOR ACTIVATED UNDERWATER

DOI: 10.17804/2410-9908.2018.6.229-236

The article aims to solve the problem of determination of a pressure field in liquid and a power load on elements of an object and test equipment at experimental tryout of underwater movement of objects. It presents a procedure of calculating the field of pressures on a flat barrier from the moment of underwater activation of a gas generator to touching of the barrier by a bubble. The barrier is replaced by a symmetrically arranged bubble of liquid, and the task is reduced to analyzing the movement of two spheres with varying radii and variable gas mass inside; the flow potential in this case has the form of the combination of Legendre polynomials. A law of a gas bubble evolution is derived, similar to the Rayleigh equation; the gas mass in the bubble is defined according to the Saint-Venant equation. Pressure distribution on the barrier is found using the Cauchy-Lagrange integral. The developed methodology offers the possibility of evaluating loads on a moving object and a test bench at gas generator activation.

Keywords: gas generator, pressure distribution in liquid, experimental qualification

References:

1. Milne Thomson L.N. Theoretical Hydrodynamics, 4th ed., London, Macmillan, 1960.
2. Kostukov A.A. Vzaimodeistvie tel, dvizhushchikhsya v zhidkosti [Interaction of Bodies Moving in a Liquid]. Leningrad, Sudostroenie, 1972, 310 p. (In Russian).
3. Levkovsky Y.L. Struktura kavitatsionnykh techeniy [Structure of Cavitation Flows]. Sudostroenie Publishing House, Leningrad, 1978. (In Russian).
4. Volkov O.V., Petrov A.G. Motion of a variable-volume sphere in an ideal fluid near a plane surface. Fluid Dynamics, 1971, vol. 6, iss. 5, pp 808–817. DOI: 10.1007/BF01013864.
5. Voronin V.V., Kulikov V.N. The distribution of high-pressure gas jet in water at outflow from a submerged nozzle. In: Trudy TsAGI [TSAGI Proceedings], 1987, no. 2384, 16 p. (In Russian).

 

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Article reference

Valov I. I., Kabanov Yu. P. Studying a Force Action on a Flat Boundless Barrier from a Gas Generator Activated Underwater // Diagnostics, Resource and Mechanics of materials and structures. - 2018. - Iss. 6. - P. 229-236. -
DOI: 10.17804/2410-9908.2018.6.229-236. -
URL: http://eng.dream-journal.org/issues/2018-6/2018-6_243.html
(accessed: 05/22/2024).

 

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Founder:  Institute of Engineering Science, Russian Academy of Sciences (Ural Branch)
Chief Editor:  S.V. Smirnov
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