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Pre-swirl stator investigation with simultaneous consideration of reducing underwater vehicle roll and increasing propulsion efficiency

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Abstract

Pre-swirl stators (PSSs) may operate as a device to improve the hydrodynamic performance of the propeller and reduce the remaining propeller torque on the submarines. This remaining torque on the submarines with a circular cross section may act unusual rolling motion. The most important and influential parameters in the PSSs are the chord length, distance from the propeller and angle of attack. The proposed PSS is selected by using Taguchi method and numerical results of the propeller performance to provide less remaining torque and more efficiency. The computations are calculated with using the commercial STAR-CCM+ software. To validate the calculations, the numerical simulation results of a B-series propeller are compared with the existing experimental data. The hydrodynamic performance of the propeller with the different PSSs under operating at the behind the underwater vehicle is presented and discussed. It is concluded that the final PSS gains 2.29% efficiency and simultaneously diminishes 44.47% of the total propulsion torque.

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Abbreviations

CFD:

Computational fluid dynamics

FVM:

Finite volume method

ITTC:

International towing tank conference

MARIN:

Maritime research institute Netherlands

MRF:

Moving reference frame

RANSE:

Reynolds-averaged Navier–Stokes equations

N :

Rotation of the propeller (RPS)

T p :

Thrust of the propeller

T s :

Thrust of the PSS

T t :

Total thrust

Q p :

Torque of the propeller

Q s :

Torque of the PSS

Q t :

Total torque

K T - p :

Thrust coefficient of the propeller

K T-s :

Thrust coefficient of the propeller

K T-t :

Total thrust coefficient

K Q-p :

Torque coefficient of the propeller

η B-p :

Efficiency of the propeller behind the body

η B-t :

Total efficiency behind the body

P D :

Delivery power

\({\mathrm{GCI}}_{\mathrm{medium}}^{21}\) :

Medium-grid convergence index

J :

Advance coefficient

K Q :

Torque coefficient

K T :

Thrust coefficient

N :

Mesh number

p :

Local pressure

q, s, \(\varepsilon\) :

Auxiliary parameters for grid convergence analysis

r :

Refinement factor

r x :

Radius to the point for pressure estimation

R :

Radius of the propeller

s a :

Apparent order of grid convergence

\({u}_{i}\) :

Velocity in \({x}_{i}\)

x :

Distance from the leading edge of the propeller blade to the point of pressure estimation

\({x}_{i}\) :

Cartesian coordinates

v a :

Advance velocity

v s :

Ship speed

η :

Open-water propeller efficiency

μ :

Viscosity of water

ρ :

Water density

ρ air :

Air density

Φ i :

Solution (here KT and KQ) on the i-th mesh

Φ ext :

Extrapolated value

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Funding

The authors received no financial support for the research.

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Authors and Affiliations

  1. Department of Maritime Engineering, Amirkabir University of Technology, Tehran, Iran

    Alireza Nadery, Hassan Bahrami & Hassan Ghassemi

  2. Imam Hossein Comprehensive University, Tehran, Iran

    Aliasghar Moghaddas

  3. School of Ocean Engineering, Harbin Institute of Technology, Weihai, China

    Guanghua He

Authors
  1. Alireza Nadery
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  2. Hassan Bahrami
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  3. Hassan Ghassemi
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  4. Aliasghar Moghaddas
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  5. Guanghua He
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Contributions

AN was involved in conceptualization, methodology, software, investigation, resources, data curation, formal analysis, writing and original draft. HB helped in software, validation, investigation, resources, writing and original draft preparation, data curation. HG contributed to conceptualization, methodology, software, investigation, resources, data curation, formal analysis, writing and original draft, supervision. AM was involved in conceptualization, methodology, formal analysis, writing a review and editing. GH helped in methodology, formal analysis, writing a review and editing, supervision.

Corresponding author

Correspondence to Hassan Ghassemi.

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Technical Editor: Daniel Onofre de Almeida Cruz.

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Nadery, A., Bahrami, H., Ghassemi, H. et al. Pre-swirl stator investigation with simultaneous consideration of reducing underwater vehicle roll and increasing propulsion efficiency. J Braz. Soc. Mech. Sci. Eng. 44, 480 (2022). https://doi.org/10.1007/s40430-022-03797-0

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  • DOI: https://doi.org/10.1007/s40430-022-03797-0

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