... at about 5% x/L to trip the flow in the model tests. The parasitic drag from the turbulence stimulators must be measured and subtracted from the model-scale resistance. In the new approach a momentum thickness simulator is used in place of a traditional turbulence stimulator. The purpose of the momentum...

... 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...

... method termed the momentum boundary layer thickness (MBLT) method has been developed. This method relates the cross flow drag on the FRM with that on the full scale vehicle. Boundary layer velocity profiles on an axisymmetric body at model and full scale Reynolds numbers have been computed by a RANS code...

... of empirical relations provided in classic papers on the subject and from one’s own testing experience. In the present work, an alternative approach is investigated. Specifically, the use of the local Reynolds number based on the momentum thickness in the model hull boundary layer, Rn_, and the pressure...

... ross environmental research thickness pipe test area application test tank boemre crude oil efficiency platform THE 29th AMERICAN TOWING TANK CONFERENCE ANNAPOLIS, MARYLAND, AUGUST 2010 Recent Testing, Training, and Research Conducted at Ohmsett The National Oil Spill Response Research...

.... The preliminary tests revealed that a system with high rates of oil recovery is possible. chemical spill rpm efficiency polluted water thickness experiment turkey pollutant thickness cleanup system istanbul pollution experiment istanbul general view rpm value photograph upstream oil & gas...

... resistance measurement calibration towing tank thickness electrical tape triangle series 60 0 stud coefficient Model R.esistance Testing in the R.obinson Towing Tank at Webb Institute J.B.Hadler, N..J.Gallagher, R.W.VanHooff and the Webb Institute Class of 2002 July 16, 2001 For presentation...

... inspection thickness propeller edge detail model scale inch model propeller trailing edge detail modification bevel separation calculation dimension camber Effect of Model Propeller Trailing Edge Details on Powering Performance Thad J. Michael1 and Stuart D. Jessup1 ABSTRACT Until recently...

... obtained with barges moving through ice­covered channels in the Mississippi River. marine transportation configuration parallel-barge configuration barge cold region research thickness engineering laboratory north america government towboat wide channel brash-ice force barge resistance...

... The proposed ITTC recommended procedures in measuring the elastic modulus, flexural strength, and specific weight of model ice are described. The basic theory is given, potential sources of error are identified, and comments are invited. equation strength ice committee thickness...

..., improvements were introduced in the cavity extent iteration algorithm and in the force calculation procedure. The modeling of the separated flow behind trailing edges with non-zero thickness (very often the case for supercavitating blade sections) was also included. Results of this method are extensively...

... The effect of lateral ice pressure on the level ice resistance of a 1/30 scale model of an OBO is examined experimentally. The model was equipped with an instrumented side panel. The apparatus for producing lateral pressure is described, as well as the model tests themselves. Rubble thickness...

... for cavitation and powering performance. The new propellers show a 2-3 knot improvement in blade surface cavitation inception speed. The new section propeller s also show some Reynolds number effects on powering, requiring higher speed testing than conventional blade section propellers. thickness...

... is a rational basis for the conduct and analysis of ice resistance model tests. thickness marine dynamic pre-sawn resistance resistance model speed coefficient buoyancy friction coefficient ice buoyancy marine transportation strength institute procedure canada clearing resistance standard...

... according to standard IMD procedures, and these results were then compared to determine the resistance variation. resistance marine dynamic repeatability starulard deviation thickness newbury scale model comparison variation flexural strength institute icebreaker strength deviation...

... visualization inception coefficient thickness vortex center upstream oil & gas cavitation inception equation arl penn state unsteadiness The Structure of ThrDimenaional Tip Vortex at High leynolda Numbera 0. R. Stinebring, K. J. Farrell, and M. L. Billet Applied Research Laboratory...

... in full scale. Cracks in the model ice pieces indicate a smaller piece size, but this is prevented by what ls believed to be a high residual strength in the model ice. icebreaker kigoriak table 2 milano preliminary investigation breaking pierre radisson resistance thickness icebreaker bow...

... experiments recently carried out at the Institute for Marine Dynamics (IMO). in St. John's, Newfoundland and the results are used for illustration purposes throughout this paper. ship thickness proceedings flexural strength experiment resistance resistance experiment overload experiment marine...

... thickness bridge gage frequency reservoir measurement PRESSURE PANEL DESIGN AND APPLICATION FOR THE MEASUREMENT OF WAVE IMPACTS James A. Kuny, John J. Lesko, Richard R. Lewis, WIiiiam H. Hay Surface Ship Structures, David Taylor Research Center Bethesda, Maryland Abstract The design of high performa...

... & gas separation revolution coefficient freesurface thickness equation computed total hull agreement total total force discrepancy COMPUTATION OF TOTAL FORCES AND MOMENTS OF BODIES OF REVOLUTION MOVING BENEATH THE FREE SURFACE Young S.Hong David Taylor Research Center Bethesda, Maryland...