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Polish Maritime Research

The Journal of Gdansk University of Technology

4 Issues per year

IMPACT FACTOR 2016: 0.776

CiteScore 2016: 0.98

SCImago Journal Rank (SJR) 2015: 0.317
Source Normalized Impact per Paper (SNIP) 2015: 1.050

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Volume 21, Issue 2


Flow of Liquid in Flat Gaps of the Satellite Motor Working Mechanism

Paweł Sliwiński
Published Online: 2014-07-26 | DOI: https://doi.org/10.2478/pomr-2014-0019


The article describes the methodology and results of investigations of the flow of oil and HFA-E emulsion in flat gaps of the working mechanism of a satellite motor. The flow of liquid in those gaps is turbulent and not fully developed. The article presents two methods of modelling this flow. Method I makes use of the Darcy-Weisbach formula, while Method II bases on the assumption that in the variable-length gaps the flow is turbulent in the area where the length is the smallest and laminar where the length is the largest. Consequently, the flow in such gaps can be modelled as the sum of laminar and turbulent flows. The results obtained in the experiment have made the basis for calculating relevant coefficients and assessing the proportion of turbulence in the flow modelled using both methods

Keywords: flow in flat gap; satellite motor; HFA-E emulsion; oil


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About the article

Published Online: 2014-07-26

Published in Print: 2014-04-01

Citation Information: Polish Maritime Research, Volume 21, Issue 2, Pages 50–57, ISSN (Online) 2083-7429, DOI: https://doi.org/10.2478/pomr-2014-0019.

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© 2014. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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