1-20 of 71
Keywords: calculation
Close
Sort by
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-002
... 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...
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-014
...-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...
Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-004
... geometry revolution efficiency ship condition load fluctuation fluid dynamics calculation model scale wake field propeller full scale reservoir simulation fluctuation blade load fluctuation water performance transient blade load determination Transient blade load determination in behind...
Proceedings Papers

Paper presented at the SNAME 13th Propeller and Shafting Symposium, September 11–12, 2012
Paper Number: SNAME-PSS-2012-008
... on a platform supply vessel. od shaft intermediate shaft inner ring amplitude subsea system fatigue failure speed range operation shaft upstream oil & gas shaft bearing fatigue strength stress concentration factor technical advisory marine transportation calculation stress amplitude...
Proceedings Papers

Paper presented at the SNAME 13th Propeller and Shafting Symposium, September 11–12, 2012
Paper Number: SNAME-PSS-2012-003
... no groove have been developed. The new bearing is a barrel in the lower portion, and is similar to an oil-lubricated type design consisting of long staves. The barrel type bearing design. has no size limitation in tail-shaft applications. In Hydrodynamic film thickness was calculated for The friction...
Proceedings Papers

Paper presented at the SNAME 13th Propeller and Shafting Symposium, September 11–12, 2012
Paper Number: SNAME-PSS-2012-010
... 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...
Proceedings Papers

Paper presented at the SNAME 12th Propeller and Shafting Symposium, September 15–16, 2009
Paper Number: SNAME-PSS-2009-11
... 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...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-11
... 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...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-05
... 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...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-13
... 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. shaft bearing crank alignment layout calculation arrangement bearing marine transportation...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-12
... upstream oil & gas propeller wake prediction velocity field circulation calculation pressure distribution algorithm reservoir simulation strength rudder coefficient propulsor integral equation strut propeller velocity component proceedings arrangement modified trailing...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-15
... environment. These methods include a Reynolds-Averaged Navier-Stokes (RANS) code for ship turbulent flow calculations and a Vortex-Lattice Method (VLM) basedprogram MPUF3Afor sheet cavitating propellerflow analyses. The combination of these methods provides a new level of realism for modeling the flow field...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-03
...Experiences using a Coupled Viscous/Potential-Flow Unsteady Propeller Analysis Procedure Scott Black1 (AM) and Thad Michael 1 (AM) ABSTRACT Software developed at the Massachusetts Institute of Technology for the unsteady propeller analysis and effective wake calculation has been transitioned...
Proceedings Papers

Paper presented at the SNAME 10th Propeller and Shafting Symposium, September 17–18, 2003
Paper Number: SNAME-PSS-2003-14
.... This pitch schedule does not generally give the best possible foe/ efficiency. Under the method recommended here, standard calculations for HP and RPM are pe,formed at various speeds and pitches. Lines of constant speed are then plotted on an engine map, along with lines ofconstantfael rate from engine bench...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-18
... propulsor-induced maneuvering forces, including those arising from complex propulsors. The heart of the maneuvering force prediction is a three-dimensional, unsteady liftingsurface method for the calculation of blade forces on both rotors and stators. The liftingsurface method includes features...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-19
... requirement frequency component rms calculation propulsion system peak value us government ship thrust bearing torque propeller vibration criteria thrust bearing engine shaft magnitude THE DEVELOPMENT OF A NEW STANDARD FOR THE VIBRATION OF SHIP PROPULSION SYSTEMS 1Gary P. Antonides1...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-20
... propulsor. An optimization liftingline/lifting-surface algorithm will be the kernel of this discuussion. 2.1 Design calculation of the propeller in the prescribed inflow In comparison with other elements of the design kit the hydrodynamic propeller blade design is nearly least developed. Although the almost...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-13
... inception inception speed circulation efficiency coefficient propeller design propeller frv-40 cavitation inception speed tip vortex cavitation requirement reynolds number calculation vortex cavitation geometry cavitation thrust Quiet Propeller Design for a Fisheries Research Vessel Thad...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-11
... 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...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-22
... Lifting-Line (Linear) Model (GLM) is used. This model supposes the existence of an undeformed helical vortex sheet behind each blade. Though, differing from orthodox linear vortex models the pitch of the mentioned helicoid is assumed to be a model's free parameter serving for filling calculated integral...

Product(s) added to cart

Close Modal