... The height of the intersection between the free surface and a ship hull is of interest for many naval architecture applications. For example, wave height at a station influences the probability of water on deck, and wetted elevation at a buttock on a transom influences resistance forces...

... Dynamic global hull girder response is an important part of the structural design of a ship, especially one with significant length and bow flare. Experimental studies were conducted at the University of New Orleans’ towing tank where a segmented model of a containership was tested in head seas...

... The resistance of a planing hull is known to be highly dependent on trim angle. For several reasons, trim is difficult to measure to the level of accuracy normally attained with other towing tank measurements such as resistance or speed. In a recent study intended to validate CFD methods...

... TRACT Vertical acceleration measurements are often used to evaluate the “rigid body” response of a planing hull to hydrodynamic forces in waves. Unfortunately accelerometers respond to both the rigid body hull motions of interest and to unwanted vibrations, which if not addressed, produce...

... providing consistent outcomes as most cases reached resistance errors below 5%, with better adherence at lower speeds. simulation hull total resistance coefficient american towing tank conference ittc resistance coefficient coefficient sinkage thickness international towing tank conference...

... Center, Carderock Division, (NSWCCD), United States Naval Academy (USNA) and University of Iowa have been comparing experimental results and CFD predictions of planing hulls. To obtain a comprehensive set of model scale experimental data for assessing of CFD tools, a representative planing hull...

... A series of tow tank tests were performed to determine whether the added mass moment of inertia in roll and damping roll coefficient for a planing hull are frequency dependent. The model was forced in roll while running at planing speeds. The model was free to heave and pitch, but restrained...

... study of four (4) data sets as discussed in Grimsley (2009) and is now extended to an additional twenty-four (24) data sets collected from full-scale and model scale testing of different planing hulls. peak identification method test case gumbel distribution lognormal distribution hull...

... the hydrodynamic studies have being done in support of this novel AUV design and development. vehicle shaft speed hull reynolds number effect propeller performance coefficient simulation vector underwater vehicle propeller correction body-fixed frame equation rudder rudder angle appendage...

... The performance of three different shaped hulls was evaluated by experiments and computations to identify a hull form that provides low calm water resistance at cruise speed while remaining dynamically stable at high speed. The target cruise speed was at a length Froude number of 0.45...

... hull Baseline 5.2 configuration. It was operated in the Chesapeake Bay at the Patuxent River Naval Air Station during the spring and fall of 2006. This paper discusses the two year NSWCCD technological effort. Specifically, it addresses the design, construction, instrumentation, and testing aspects...

... This report considers the analytically predicted interference effects in a methodical series of 378 trimarans based on Series 64 hull forms. Wave interaction effects on drag were evaluated statistically to obtain a series of algebraic expressions for interference prediction based on form-related...

... This paper presents the measured resistance of a trimaran model at the small towing tank at Dalhousie University, Canada. The towing tank has the dimensions of 30m x 1m x 1m. Experiments were carried out for a trimaran with various configurations of outrigger setbacks and hull spacings. Model...

... and a systematic procedure for studying pitch-heave equilibrium. foil angle main foil angle control surface mitala marine transportation coefficient reynolds number maximum lift coefficient foil aft foil hull mbydro equation propulsor equilibrium lift coefficient waterline hysw aft foil...

... associated with the system measurements is presented. Results of measurements on a waterjet-powered destroyer hull are presented. On this hull, velocity fields are shown ahead of the inlet, inside the inlet, and at the exit of the jet. Pitot tube measurements are combined with the velocity measurements...

... Research was conducted during the 1997-98 academic year into the porpoising of "V-hulled" planing craft. The purpose of the study was to first correlate the porpoising inception results published by 1952 Webb Institute seniors Day & Haag at a much larger scale, then advance porpoising...

.... experiment chine vorus modification equation configuration full scale planing experiment calculation boat transom manometry assumption coefficient transducer hull savitsky formulation geometry variation FULL SCALE PLANING EXPERIMENT AND ANALYSIS Richard A. Royce University ofMichigan...

... definition international conference hull marine transportation attractor simulation rudder yaw mmt renilson figure 5 investigation broacillng-to steepness BROACillNG-TO: A PROPOSED DEFINITION AND ANALYSIS METHOD Martin R Renilson* and Andrew Tuite Australian Maritime Engineering CRC Ltd...

... A wave-following towed planing vehicle operates in head seas, Sea State l and 2, at speeds in excess of l 6 knots (824 m/s). The as-built beam of the vehicle is either 4.25 in (10.8 cm) or 7.75 in (19.7 cm), for the two configurations; V-hull (deadrise pointing outboard) or catamaran (deadrise...

... Experiments were carried out at the Institute for Marine Dynamics to determine the distribution of lateral forces and moments on a warship hull form with the objective of eventually modeling these components in a numerical maneuvering simulation. Total forces and moments were obtained from...