One dimensional dynamic model for submarine low pressure screw compressor deballasting system performance analysis is developed. Cross section of outer shell of ballast tank is described as cylinder, one dimensional flow equations combined with screw compressor performance model are employed to describe compressors flow characteristic. Coupled effect between gas pressure in ballast tank and discharging performance of screw compressor is considered in the presenting model as gas leakage during compressing process is taken into account. Deballasting duration for one certain submarine model is calculated using the developed model, and the result agrees well with that obtained by using Chinese state code for submarine low pressure system design. For different cross section tank models as circular section model, parabolic section model and trapezoidal section model, dynamic performance of screw compressor deballasting system is studied using the validated model. Gas pressure in tank, dropping speed of tank water surface and draft of submarine are simulated, and the results show that little difference of deballasting duration is caused by changing tank cross section. The most stable deballasting process is achieved by using a circular section tank. Deballsting performance is also studied as tonnage of submarine and volume of ballast tank change and commonsense conclusions are obtained.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Use of Hybrid Rocket Technology for Submarine Emergency Deballasting

    Grosse, Matthias / Bettella, Alberto | AIAA | 2011


    A METHOD AND SYSTEM OF BALLASTING AND DEBALLASTING A VESSEL

    ANDERSEN MADS LYKKE / SMIDTH FREDERIK | European Patent Office | 2022

    Free access

    LIGHTER-THAN-AIR AIRCRAFT AND DEBALLASTING METHOD IMPLEMENTED IN SAID LIGHTER-THAN-AIR AIRCRAFT

    KUHLMANN HERVÉ FRANÇOIS | European Patent Office | 2017

    Free access

    Performance of a Custom Asymmetric Screw Compressor

    Markham, David R. / Cutbirth, J. Michael | SAE Technical Papers | 2016


    COMPRESSOR UNIT SCREW COMPRESSOR AND OPERATING METHOD OF COMPRESSOR UNIT

    UEDA TATSUKI / YAMADA TAKASHI | European Patent Office | 2022

    Free access