Scale effects on tip loaded propeller performance using a RANSE solver

Antonio Sanchez Caja (Corresponding Author), J González-Adalid, M Pérez-Sobrino, Tuomas Sipilä

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

Traditionally, the quality of alternative propeller designs at full scale has been assessed by means of model scale tests. Due the large differences in Reynolds numbers between model and full scales, model-scale-based performance predictions may be questionable in cases where viscous effects are dominant. This paper presents a numerical study about scale effects on performance coefficients for a CLT propeller with different endplate geometries. Twelve endplate shape variations were analyzed in model and full scale using RANS code FINFLO. The SST k-? turbulence model is used as a basic model for the study. Additional computations are made with other turbulence models. A special procedure for the generation of the computational grids is implemented to minimize computational errors in the comparison of the alternative geometries. The study provides also a RANS-based scale effect on the shape of radial circulation distribution predicted for different geometry variations. The research work gives an insight into which type of modifications at full scale could be analyzed by model scale viscous flow theory or model tests in ranking alternative designs. Differences found between model and full scale numerical results make model scale analysis questionable for some specific type of modifications when full-scale performance is sought
Original languageEnglish
Pages (from-to)607-617
Number of pages10
JournalOcean Engineering
Volume88
Issue numberSeptember
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Propellers
Turbulence models
Geometry
Viscous flow
Reynolds number

Keywords

  • Circulation
  • CLT
  • extrapolation
  • RANS
  • scale effects
  • tip loaded propeller

Cite this

Sanchez Caja, Antonio ; González-Adalid, J ; Pérez-Sobrino, M ; Sipilä, Tuomas. / Scale effects on tip loaded propeller performance using a RANSE solver. In: Ocean Engineering. 2014 ; Vol. 88, No. September. pp. 607-617.
@article{92590f36db9842a0bfd7b810d8798b24,
title = "Scale effects on tip loaded propeller performance using a RANSE solver",
abstract = "Traditionally, the quality of alternative propeller designs at full scale has been assessed by means of model scale tests. Due the large differences in Reynolds numbers between model and full scales, model-scale-based performance predictions may be questionable in cases where viscous effects are dominant. This paper presents a numerical study about scale effects on performance coefficients for a CLT propeller with different endplate geometries. Twelve endplate shape variations were analyzed in model and full scale using RANS code FINFLO. The SST k-? turbulence model is used as a basic model for the study. Additional computations are made with other turbulence models. A special procedure for the generation of the computational grids is implemented to minimize computational errors in the comparison of the alternative geometries. The study provides also a RANS-based scale effect on the shape of radial circulation distribution predicted for different geometry variations. The research work gives an insight into which type of modifications at full scale could be analyzed by model scale viscous flow theory or model tests in ranking alternative designs. Differences found between model and full scale numerical results make model scale analysis questionable for some specific type of modifications when full-scale performance is sought",
keywords = "Circulation, CLT, extrapolation, RANS, scale effects, tip loaded propeller",
author = "{Sanchez Caja}, Antonio and J Gonz{\'a}lez-Adalid and M P{\'e}rez-Sobrino and Tuomas Sipil{\"a}",
note = "Project code: 70501 EU_TRIPOD",
year = "2014",
doi = "10.1016/j.oceaneng.2014.04.029",
language = "English",
volume = "88",
pages = "607--617",
journal = "Ocean Engineering",
issn = "0029-8018",
publisher = "Elsevier",
number = "September",

}

Scale effects on tip loaded propeller performance using a RANSE solver. / Sanchez Caja, Antonio (Corresponding Author); González-Adalid, J; Pérez-Sobrino, M; Sipilä, Tuomas.

In: Ocean Engineering, Vol. 88, No. September, 2014, p. 607-617.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Scale effects on tip loaded propeller performance using a RANSE solver

AU - Sanchez Caja, Antonio

AU - González-Adalid, J

AU - Pérez-Sobrino, M

AU - Sipilä, Tuomas

N1 - Project code: 70501 EU_TRIPOD

PY - 2014

Y1 - 2014

N2 - Traditionally, the quality of alternative propeller designs at full scale has been assessed by means of model scale tests. Due the large differences in Reynolds numbers between model and full scales, model-scale-based performance predictions may be questionable in cases where viscous effects are dominant. This paper presents a numerical study about scale effects on performance coefficients for a CLT propeller with different endplate geometries. Twelve endplate shape variations were analyzed in model and full scale using RANS code FINFLO. The SST k-? turbulence model is used as a basic model for the study. Additional computations are made with other turbulence models. A special procedure for the generation of the computational grids is implemented to minimize computational errors in the comparison of the alternative geometries. The study provides also a RANS-based scale effect on the shape of radial circulation distribution predicted for different geometry variations. The research work gives an insight into which type of modifications at full scale could be analyzed by model scale viscous flow theory or model tests in ranking alternative designs. Differences found between model and full scale numerical results make model scale analysis questionable for some specific type of modifications when full-scale performance is sought

AB - Traditionally, the quality of alternative propeller designs at full scale has been assessed by means of model scale tests. Due the large differences in Reynolds numbers between model and full scales, model-scale-based performance predictions may be questionable in cases where viscous effects are dominant. This paper presents a numerical study about scale effects on performance coefficients for a CLT propeller with different endplate geometries. Twelve endplate shape variations were analyzed in model and full scale using RANS code FINFLO. The SST k-? turbulence model is used as a basic model for the study. Additional computations are made with other turbulence models. A special procedure for the generation of the computational grids is implemented to minimize computational errors in the comparison of the alternative geometries. The study provides also a RANS-based scale effect on the shape of radial circulation distribution predicted for different geometry variations. The research work gives an insight into which type of modifications at full scale could be analyzed by model scale viscous flow theory or model tests in ranking alternative designs. Differences found between model and full scale numerical results make model scale analysis questionable for some specific type of modifications when full-scale performance is sought

KW - Circulation

KW - CLT

KW - extrapolation

KW - RANS

KW - scale effects

KW - tip loaded propeller

U2 - 10.1016/j.oceaneng.2014.04.029

DO - 10.1016/j.oceaneng.2014.04.029

M3 - Article

VL - 88

SP - 607

EP - 617

JO - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

IS - September

ER -