Comparative resistance calculations for SLICE/SWATH hulls
Al-jowder, Jassim Abdulla
MetadataShow full item record
Comparative resistance calculations are performed for SLICE and SWATH hulls. For the purposes of this study, the primary difference between these two hull types is in the underwater pods. It is assumed that both ship types have identical surface piercing struts, speed, and displacement. The underwater pods are continuous for the SWATH design and discontinuous for the SLICE. Resistance calculations are based on I.T.T.C. skin friction, empirical regression of existing experimental data for form drag, and surface singularities distribution for wavemaking. Results are presented for two cases, length limited where the overall length between the two hull types remains constant, and diameter limited where the pod diameter remains constant. Parametric studies in terms of pod geometry, separation distance, ship speed, displacement length ratio, and draft indicate that a SLICE hull may offer decreased resistance compared to a similar SWATH, depending on the range of the above design parameters. (AN)
Showing items related by title, author, creator and subject.
Kilroy, Gerard (Monterey, California; Naval Postgraduate School, 2014-03-10);Idealized numerical model experiments are presented to investigate the convective generation of vertical vorticity in a tropical depression. The calculations are motivated by observations made during the recent PREDICT ...
On the representation of droplet coalescence and autoconversion: Evaluation using ambient cloud droplet size distributions Hsieh, W.C.; Jonsson, H.; Wang, L.-P.; Flagan, R.C.; Seinfeld, J.H.; Nenes, A.; Buzorius, G. (2009);In this study, we evaluate eight autoconversion parameterizations against integration of the Kinetic Collection Equation (KCE) for cloud size distributions measured during the NASA CRYSTAL-FACE and CSTRIPE campaigns. KCE ...
Synthetic vision visual perception for computer generated forces using the programmable graphics pipeline Pursel, Eugene Ray (Monterey, California. Naval Postgraduate School, 2004-09);In visual simulations, the human must make most of her decisions based on the visual cues rendered to her display. On the other hand, synthetic forces have the luxury of basing their decisions on the data contained in the ...