... bulten transient blade load determination calculation efficiency blade load fluctuation transition model model scale ship condition water performance geometry wake field load fluctuation transient blade load determination full scale propeller Transient blade load determination in behind...

...-GL has been involved in the development of sound rule requirements for shaft alignment calculations and installations, hereby making combined use of practical experiences and theoretical investigations. Based on this knowledge the Authors of this paper look upon fundamental experience in consulting...

... Since 1869 the main goal of whirling vibration calculations of rotating machinery was to determine critical speeds. Currently, all Classification Societies require a propulsion shafting whirling vibration calculation (also named bending or lateral vibration calculation) in the scope...

... is outlined. Friction, wear and deformation properties of the new bearing are described. In addition, wear life prediction is proposed for the PTFE partial arc bearing. calculation partial arc design water-lubricated tail-shaft bearing partial arc bearing aft end bearing pressure ptfe partial arc...

... on a platform supply vessel. subsea system upstream oil & gas marine transportation od shaft fatigue failure shaft bearing calculation intermediate shaft speed range fatigue strength stress amplitude inner ring operation stress concentration factor safety factor amplitude shaft...

... In spite of recent CFD progress, simple methods for the estimation of the propeller hydrodynamic loads through stationary non-uniform wake in relation to cargo ship shafting alignment and vibration calculations are still demanded. The paper concerns with the propeller load calculation results...

... There are three main problems for engineers specializing in propulsion train calculation. The first problem is a lack of a single shaft model to perform all types of shaft related calculations, the second is the inability to analyze different operation states of propulsion shafting in one click...

... This paper presents results of fully transient calculations of the flow-through waterjet pumps. The fully transient method is based on a moving mesh option to implement the rotation of the impeller. In this way, the time-dependent forces, acting on the impeller, can be determined. These forces...

... diameter model propellers in the two different conditions, without (case-A) and with (case-BJ the application of anti-singing trailing edge, the POC prediction was made through several calculations by means of potential flow theory (lifting surface, source and quasi-continuous vortex lattice method (SQCM...

... for the alignment layout of the propulsion shaft line. Calculations using advanced 3D FE based crankshaft models with elastic bearings and clearance are utilised to evaluate alignment measurement result. freight & logistics services marine transportation jack-up test result shaft bearing calculation...

... Software developed at the Massachusetts Institute of Technology for the unsteady propeller analysis and effective wake calculation has been transitioned to the Naval Surface Warfare Center, Carderock Division. The lifting surface propeller software is designed to be coupled with a three...

... calculations and a Vortex-Lattice Method (VLM) based program MPUF3A for sheet cavitating propeller flow analyses. The combination of these methods provides a new level of realism for modeling the flow field around a ship with thick turbulent boundary layers and multi-component propulsor/hull interaction...

... the method recommended here, standard calculations for HP and RPM are performed at various speeds and pitches. Lines of constant speed are then plotted on an engine map, along with lines of constant fuel rate from engine bench tests. It is then possible to determine where each line of constant speed achieves...

... for calculation of rudder behind the operating propeller and podded units of different arrangement tested at MARINTEK (Norwegian Marine Technology Research Institute). The results of the measurements and theory/experiment comparisons are discussed. reservoir simulation upstream oil & gas circulation...

... lifting surface method for the calculation of blade forces on both rotors and stators. The lifting surface method includes features that are important for the modeling of complex propulsors. Temporally-varying forces are computed for a blade-row rotating in a spatially-varying flow field. The spatially...

... calculation knot efficiency cavitation inception speed vortex cavitation diameter coefficient tip vortex cavitation geometry cavitation inception propeller design requirement cavitation inception speed propeller reynolds number thrust Quiet Propeller Design for a Fisheries Research Vessel...

...-dimensional radius calculation efficiency chord length geometry velocity field blade section achkinadze algorithm propeller interaction propulsor circulation distribution blade row A Hydrodynamic Design Procedure for Multi-Stage BladeRow Propulsors Using Generalized Linear Model of the Vortex...

... component rms ship displacement criteria calculation thrust bearing excitation engine propulsion system torque requirement shaft peak value propeller bearing magnitude thrust vibration THE DEVELOPMENT OF A NEW STANDARD FOR THE VIBRATION OF SHIP PROPULSION SYSTEMS 1Gary P. Antonides1...

... with spoilers. Finally the results of systematic calculations are presented to illustrate the possibility of the propeller with spoiler for cavitating outboard motor propellers. calculation knot design calculation speed range design procedure outboard motor propeller propeller design motor...

... of root cavitation. Because of the open shaft configuration, the primary inflow wake was produced by shaft inclination. The relatively simple wake field permitted accurate quasi-steady panel method calculations of blade pressure distributions. Panel calculations modeling the blade and hub were used...