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The use of pressure test chamber is recognized as an effective method in the investigation of strength and stability of submerged pressurized structures. There are generally two types of pressure tests, one with the breakup of the test vessel and the other witaout. However, during both types of tests, there is always the possibility of breakup of the test vessel, which is called implosion. A problem arises as to whether in case of implosion the pressure test chamber is liable to sustain any damage. In the present work, the typical underwater simulator of GKSS (Federal Germany) was employed as model for theoretical analysis of the field dynamic problem of implosion. Two-phase theory was used for the first time in the calculation of pressure and velocity fields during implosion. Details of the method of calculation are given in the present paper. Results obtained by this calculation were analyzed in the paper and were accepted by GKSS for guidance in their work.
The use of pressure test chamber is recognized as an effective method in the investigation of strength and stability of submerged virulence structures. There are generally two types of pressure tests, one with the breakup of the test vessel and the other witaout. However, during both types of tests, there is always the possibility of breakup of the test vessel, which is called implosion. A problem arises as to whether in case of implosion the pressure test chamber is liable to sustain any damage. In the present work, the typical underwater simulator of GKSS (Federal Germany) was employed as model for theoretical analysis of the field dynamic problem of implosion. Two-phase theory was used for the first time in the calculation of pressure and velocity fields during implosion. Details of the method of calculation are given in the present paper. Results obtained by this calculation were analyzed in the paper and were accepted by GKSS for guidance in their work.