Investigation of shallow UNDEX in littoral ocean domain
Ahn, Sung (Dean) H.
Kwon, Young W.
Didoszak, Jarema M.
MetadataShow full item record
With recent delivery of littoral combat ships, the impact of operating in shallow or littoral ocean domain (LOD) during the duration of their life cycle is of interest, and a shock trial or hardening test and validation for this class is needed. For this study, the theories of underwater shock phenomena as applied within the boundaries of LOD, specific to the Eulerian fluid domain were conducted. The results of varying ocean depth show clear distinction in UNDEX characterization at depths shallower than 300ft. Varying charge size and depth showed that charge size of less than 300lbs of HBX-1 displayed a linear relationship while changing the charge depths to near water-air or water-bottom interface also resulted in amplified characteristics of UNDEX parameters. In addition, varying lateral boundary showed that as its distance is brought inside the radius of bulk cavitation, the UNDEX behavior also became increasingly chaotic due to similar effects seen in the shallower bottom depth. Lastly, adding blocked cells prior to a full scale coupled run showed that fluid behaves more erratically as these small rigid boundaries are situated within the radius of forming bulk cavitation.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Rudko, David D. (Monterey, California. Naval Postgraduate School, 2003-03);The purpose of the Littoral Combat Ship is to provide the Navy with an affordable, small, multi-mission ship capable of independent, interdependent and integrated operations inside the littorals. The Littoral Combat Ship ...
Holmes, Matt; Huynh, Tom; Kline, Jeff; Winslow, Jeff (Monterey California. Naval Postgraduate School, 2004-09-02);To gain maritime dominance in the littorals in the 2020 timeframe, the US Navy must have capabilities to assure access to the littorals and to enable Sea Basing and Sea Strike. These capabilities necessitate innovative and ...
Armstrong, Albert E. (Monterey, California. Naval Postgraduate School, 2004-06);Naval operations are highly dependent upon environmental conditions that can either adversely affect successful completion or hinder the safety of personnel. Each warfare community has defined environmental thresholds and ...