I. I. Valov, Yu. P. Kabanov

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

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.

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