A complete design of ship propellers using the new computer system

Koronowicz, Tadeusz; Krzemianowski, Zbigniew; Tuszkowska, Teresa; Szantyr, Jan

doi:10.2478/v10012-008-0007-7

Cited by 6 publications

(22 citation statements)

References 3 publications

(3 reference statements)

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“…The method of graphical presentation of the results is similar to that applied to the classical single propellers [4], with the modification that in case of CRP it may refer separately to the forward or aft propeller or to the entire CRP set. The examples of such presentation are shown in the next section.…”

Section: The Program For Analysis Of the Contra-rotating Propellers Omentioning

confidence: 99%

“…The algorithm of the design program for contra-rotating propellers differs in the following details from the analogical programs for single or tandem co-rotating propellers [4,6]: a) the calculations are performed only for the given value of the total thrust of the CRP set b) the division of the total thrust between the forward and aft propeller may be given in the input data or may be determined in the design program The design calculations are performed in the same way for every selected version of the design task (similarly as in the case of classical single propellers). The results of design calculations are available in the form of the appropriate numerical files and drawings on the computer screen, which may be saved and, or printed.…”

Section: The Design Programmentioning

confidence: 99%

“…The input data include all information required for initiation of the variant of design calculation selected out of four available options, similarly as for other types of propellers described in earlier publications [4,5,6]. The input data may be introduced either in the form of the previously prepared input data file or directly from the computer terminal in an interactive mode.…”

Section: The Input Datamentioning

confidence: 99%

“…The design of contra-rotating propellers is based on the same requirements and assumptions which are employed in the design of single propellers and tandem co-rotating propellers [4,6]. In general, the design requirements of contra-rotating are similar to those of tandem propellers, but they dif fer in the following characteristic features: a) in the design program for contra-rotating propellers the determination of the aft propeller diameter is required b) detailed information about the velocity field induced by both propellers of the set is required not only in the design program, but also in the program for analysis of the contrarotating propellers operation in the non-uniform wake.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly as in the case of the previously presented systems [4,5,6] an extensive use has been made of computer graphics for control and correction of the input data, for control of the intermediate results, for modification of the geometry of both propellers at consecutive stages of design and for presentation of the final results.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A complete design of contra-rotating propellers using the new computer system

Koronowicz¹,

Krzemianowski²,

Tuszkowska³

et al. 2010

Polish Maritime Research

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Section: The Program For Analysis Of the Contra-rotating Propellers Omentioning

confidence: 99%

Section: The Design Programmentioning

confidence: 99%

Section: The Input Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A complete design of contra-rotating propellers using the new computer system

Koronowicz¹,

Krzemianowski²,

Tuszkowska³

et al. 2010

Polish Maritime Research

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Influence of the skew angle on the hydroelastic behaviour of a composite marine propeller

Ghassemi

Saryazdi

Ghassabzadeh

2012

Proceedings of the Institution of Mechanical Engineers, Part M:

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This paper discusses the influence of the skew angle on the hydroelastic behaviour of a composite marine propeller. Recently, propellers have been made of composite materials because of their useful acoustic properties and because they are lightweight. However, the flexibility of composites causes much deflection in comparison with conventional materials and a change in the hydroelastic performances of propellers. In this research, the hydroelastic behaviour of a propeller is analysed for various skew angles using the prepared software code, namely the boundary element method-finite element method hydroelastic code, in which the hybrid boundary element method-finite element method is used. The hydrodynamic load acting on the propeller is determined by the boundary element method, and the deformed propeller is then obtained by the finite element method. The iterations between the boundary element method and the finite element method are repeated until the deflection and hydrodynamic characteristics (the thrust, the torque and the efficiency) of the propeller converged. The numerical results indicate that the skew angle affects the performance of the propeller and the stress field. As the skew angle increases, the maximum deflection of the blade increases; however, the thrust coefficient and the torque coefficient decrease.

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Numerical calculations of the hydrodynamic performance of the contra-rotating propeller (CRP) for high speed vehicle

Ghassemi¹,

Taherinasab²

2013

Polish Maritime Research

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Several different methods have been used to analyze the marine propellers. In this paper a boundary element method (BEM) for modelling steady hydrodynamic performance of a contra-rotating propeller (CRP) has been developed. The potential flow across the front and rear propellers have been considered. By calculating the induced flow, the interaction between two propellers is studied. This method has been applied to a typical CRP. The results are included in the form of the hydrodynamic performance coefficients, total thrust and torques. Numerical calculations indicate that the predicted hydrodynamic performanceshows good conformity with experimental results.

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A complete design of ship propellers using the new computer system

Abstract: ABSTRACT

Cited by 6 publications

References 3 publications

A complete design of contra-rotating propellers using the new computer system

A complete design of contra-rotating propellers using the new computer system

Influence of the skew angle on the hydroelastic behaviour of a composite marine propeller

Numerical calculations of the hydrodynamic performance of the contra-rotating propeller (CRP) for high speed vehicle

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