Abstract

Initiation of Destructive Strike Acoustic Wave in the Liquid of the Big Volume at the Temperature Near to Boiling Point

S.Suchkov, V.N.Krasnoperov, B.N.Shevtsov (Physics Department, Saratov State University, Saratov, Russia)

e-mail: suchkov@ssu.runnet.ru

Accidents in the large systems of heat energy transference are known when, for unknown reasons, destruction of bulky reservoirs more than 1000 m3 filled up by hot water at the temperature of 363-368K takes place. Here, the accidents are accompanied by total destructions of nearly located objects. The possible reason of this phenomenon may be a powerful strike acoustic wave. Let, in the closed reservoir not completely filled by liquid at the temperature near to boiling point, the pressure decreases quickly. Here, the temperature of liquid boiling decreases also quickly and if it is less than original liquid temperature, the part of the internal energy will be expended for vapor formation. As a result of it the beginning of boiling of the liquid upper layer takes place and the thickness of this layer is determined by the difference of pressures. If after small interval of time, the pressure increases quickly, the formed vapor bubbles will collapse, generating the strike acoustic waves. Under certain condition, the strike waves from point sources in the kind of vapor bubbles may form the powerful strike acoustic wave creating the pressure on the reservoir bottom more than 1GPa.

Section : 4