Theses and Dissertations
Effect of shroud geometry on the effectiveness of a short mixing stack gas eductor model.
(Monterey, California. Naval Postgraduate School, 1983-06)
An existing apparatus for testing models of gas eductor
systems using high temperature primary flow was modified to
provide improved control and performance over a wide range of
gas temperature and flow rates. Secondary ...
Filmwise condensation of steam on low integral-finned tubes
(1984-09); NPS-69-84-008
Filmwise condensation heat-transfer measurements if steam were made on horizontal tubes under vacuum and near-atmospheric pressures. Data were taken for a smooth tube and for 21 tubes which contained rectangularly-shaped, ...
Three dimensional pursuit guidance and control of submersible vehicles
(Monterey, California. Naval Postgraduate School, 1991-09)
A pure pursuit guidance law is combined with a heading autopilot to provide accurate path keeping of submersible vehicles. The scheme is implemented and analyzed in both the horizontal and vertical planes. A complete ...
Phase transformations in Ti3Al based alloy
(Monterey, California. Naval Postgraduate School, 1991-12)
A 'super a2' Ti3Al based alloy with additions of niobium, chromium and tantalum was studied with respect to phase transformation under different heat treatment and aging times and temperatures. As received samples were ...
Performance and flow regimes in plane 2-D diffusers with exit channels at low Reynolds numbers
(Monterey, California. Naval Postgraduate School, 2003-09)
A numerical study on laminar incompressible flows in 2-D straight walled diffusers in the low Reynolds number regime (105-1048) is presented to investigate performance and various flow regimes that might exist. Tail channels ...
The effect of condensate inundation on steam condensation heat transfer to wire-wrapped tubing
(Monterey, California. Naval Postgraduate School, 1983-06)
Steam condensation heat transfer measurements were made
in a 5-tube test condenser having an additional perforated
tube to simulate up to 30 active tubes. Results were
obtained for smooth tubes and roped tubes wrapped ...
A nonlinear study of open loop dynamic stability of submersible vehicles in the dive plane
(Monterey, California. Naval Postgraduate School, 1994-03)
This thesis presents a comprehensive nonlinear study of straight line stability of motion of submersibles in the dive plane under open loop conditions. A systematic perturbation analysis demonstrates that the effects of ...
Stability criteria analysis for Landing Craft Utility
(Monterey, California: Naval Postgraduate School, 2017-12)
Currently used Landing Craft Utility (LCU) stability criteria may not be optimal for the typical coastal transits of those vessels. Therefore, this study examines the intact transverse static and dynamic stability of the ...
Vehicle guidance and control along circular trajectories
(Monterey, California. Naval Postgraduate School, 1992-09)
The problem of path keeping of marine vehicles along curved paths is considered. In particular, we are concerned with circular arcs that join two consecutive straight line segments. This provides smooth path changes ...
Artificial boundary conditions for finite element model update and damage detection
(Monterey, California: Naval Postgraduate School, 2017-03)
In structural engineering, a finite element model is often used to estimate its dynamic or static behavior, and in conjunction with measured data, to monitor the health of a structure. This research is focusing on the use ...
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Lieutenant, Hellenic Navy (11)
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