... This paper presents computational techniques to predict the fully unsteady interaction of two hydrofoils (rotor and stator) and to calculate the unsteady trailing wake geometry in the case of a propeller. A boundary element method is developed to simulate the unsteady performance of moving...

... In the present study an experimental analysis of the propeller-rudder interaction has been performed in a cavitation tunnel. The experiments simulated the condition of a rudder operation aft of a propeller but without the influence of the hull. The activity has been performed through...

... by subtracting from the total inflow (determined in GBFLOW-3D) the velocities induced by the same propeller ( determined in MPUF-3A). Several iterations between GBFLOW-3D and MPUF-3A are performed until convergence is reached. The three-way interaction among the pod/strut and the two propellers is fully...

... 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...

.... electrical industrial apparatus subsea system thruster good agreement turnock sr propeller tip diameter duct application panel method section shape southampton optimisation numerical model hydrodynamic propeller experimental data method workshop interaction wake contraction Design...

... This paper describes a general numerical method of analyzing propeller hydrodynamic performance, with emphasis on contra-rotating (CRP) and ducted propellers. The main difficulty in this analysis is the complexity of the interaction between the two blade rows, in the case of a CRP, and between...

...-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...

... radius fraction variation blade thickness operation blade section exceptional load limit state loading ice class propeller propeller section modulus canada interaction equation blade out-of-plane Proposals for Design Methodologies for Ice Class Propellers Neil Bose1· (M), Brian Veitch2...

... The presence of appendages upstream of a propeller on a ship modifies its hydrodynamic performances: rotation speed, power, efficiency, cavitation and noise. Hence, it is ·necessary to improve our knowledge of the wake in order to improve propeller designs and propeller hull interactions...

... An integrated propulsor has a strong interaction with the flow over the stem and prevents that flow from separating as it would in the absence of the propulsor. Traditional propulsor design procedures based upon interaction coefficients are inadequate for this type of application. A logical...

... of the future cavitation modeling works are also given. reservoir simulation upstream oil & gas fluid dynamics bubble cluster modeling hirt calculation bubble dynamic cavitation model void fraction void fraction region fraction cavity sheet cavity interface interaction equation...

... A method for predicting rudder-propeller interaction is presented and compared with experimental measurements. A surface panel program (PALSUPAN) forms the basis of the analysis. The rudder and propeller are modelled separately using an iterative process whereby their respective interaction...

... the propeller and stators. The three-dimensional flow around the duct/hub, propeller, and stators is computed separately with the interactions between them being accounted for in an iterative manner. The interactions between the duct and the stators and between the duct and the propeller are treated in a non...

... are approximated by a finite number of vortex horseshoes. The strengths of the horseshoes are determined by using a numerical nonlinear optimization technique to maximize the propulsor efficiency. The non axisymmetric duct/propeller interactions are included within the design procedure. Results are presented...

..., and it includes faster and more accurate methods of computing the mutual interactions between the forward and aft propeller. The addition, the theory has been extended to allow for finite loading at the blade roots and takes into account the effect of the hub boundary. The paper provides numerical predictions...