Surprising behaviour of the wageningen B-Screw series polynomials

9Citations
Citations of this article
18Readers
Mendeley users who have this article in their library.

Abstract

Undoubtedly, theWageningen B-screw Series is the most widely used systematic propeller series. It is very popular to preselect propeller dimensions during the preliminary design stage before performing a more thorough optimisation, but in the smaller end of the market it is often used to merely select the final propeller. Over time, the originally measured data sets were faired and scaled to a uniform Reynolds number of 2 106 to increase the reliability of the series. With the advent of the computer, polynomials for the thrust and torque values were calculated based on the available data sets. The measured data are typically presented in the well-known open-water curves of thrust and torque coefficients KT and KQ versus the advance coefficient J. Changing the presentation from these diagrams to efficiency maps reveals some unsuspected and surprising behaviours, such as multiple extrema when optimising for efficiency or even no optimum at all for certain conditions, where an optimum could be expected. These artefacts get more pronounced at higher pitch to diameter ratios and low blade numbers. The present work builds upon the paper presented by the author at the AMT'17 and smp'19 conferences and now includes the extended efficiency maps, as suggested by Danckwardt, for all propellers of the Wageningen B-screw Series.

References Powered by Scopus

FURTHER COMPUTER-ANALYZED DAT OF THE WAGENINGEN B-SCREW SERIES.

132Citations
N/AReaders
Get full text

OPTIMUM CHARACTERISTICS EQUATIONS FOR THE 'K-J' PROPELLER DESIGN CHARTS, BASED ON THE WAGENINGEN B-SCREW SERIES.

3Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Fast and stable operation approach of ship solid oxide fuel cell-gas turbine hybrid system under uncertain factors

16Citations
N/AReaders
Get full text

An Innovative Proposal for Increasing the Speed of a 60 Metres Fast Patrol Vessel

5Citations
N/AReaders
Get full text

Numerical Study of Kaplan Series Propeller using CFD: Effect of Angle of Attack and Number of Blade Variations

2Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Helma, S. (2020). Surprising behaviour of the wageningen B-Screw series polynomials. Journal of Marine Science and Engineering, 8(3). https://doi.org/10.3390/jmse8030211

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 3

38%

Lecturer / Post doc 2

25%

Researcher 2

25%

Professor / Associate Prof. 1

13%

Readers' Discipline

Tooltip

Engineering 8

80%

Energy 1

10%

Earth and Planetary Sciences 1

10%

Save time finding and organizing research with Mendeley

Sign up for free