TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Induced velocities outside the ideal propeller jet



Full text article ( in russian)

Year

 
2021

Issue

 
397

Volume

 
3

Pages

 
33-44

Caption

 
Induced velocities outside the ideal propeller jet

Authors

 
Kotlovich V.

Keywords

 
ideal propeller, induced velocities, calculations

DOI

 
10.24937/2542-2324-2021-3-397-33-44

Summary

 
Object and purpose of research. The paper is devoted to the analysis of induced flow velocities outside the ideal propeller jet. The purpose is to widen capabilities of estimations.
Subject matter and methods.Analysis of data on this issue has shown that complicated and quite labor-consuming methods are used for these purposes. It is attempted to devise a calculation scheme based on direct determination of induced velocities from discrete sinks simulating the ideal propeller. For this purpose an algorithm and software is developed for PC implementation. Testing of the computer program allowed us to define conditions ensuring the accuracy of calculations, it confirmed practically full agreement with the data obtained by other authors and possibility for widening the range of its application.
Main results. Systematic calculations of induced velocities outside the ideal propeller jet were done allowing us to determine the flow velocity at any point of a wide area for engineering purposes
Conclusion. Longitudinal and radial component velocities induced by ideal propeller outside its jet were calculated based on directly assessed influence of the system of sinks distributed over the propeller disk on the ideal fluid flow. The algorithm for calculations was developed, the software was written and tested. Systematic calculations of induced velocities were done, which could be used for practical estimations

Rubrics

 
Naval architecture

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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