CFD analysis of propeller tip vortex cavitation in ship wake field

Keun Woo Shin, Poul Andersen

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

TVC on marine propellers in behind-hull conditions is a challenging problem for numerical predictions, because it is deformed in turbulent viscous interactions with hull wake, propeller-induced flows and rudder disturbance. DES is made for cavitating flows on a propeller and a rudder of a military vessel with a 3.5° shaft inclination in non-uniform hull wake. While a cavitation tunnel test shows TVC extending over the rudder, only a short extent of TVC is reproduced in DES on the initial grid. After an adaptive grid refinement based on the Q-criterion, a larger extent of TVC is simulated and the first- and second-order pressure pulses on two points above the propeller are closer to the experimental measurements. The effects of hull wake, propeller-induced flow, rudder disturbance and shaft inclination on TVC are analyzed by looking into the deformation of the helical trajectory identified by a Q-criterion iso-surface
Original languageEnglish
Publication date2018
Number of pages5
Publication statusPublished - 2018
Event10th Symposium on Cavitation (CAV2018) - Renaissance Baltimore Harborplace Hotel, Baltimore, United States
Duration: 14 May 201816 May 2018

Conference

Conference10th Symposium on Cavitation (CAV2018)
LocationRenaissance Baltimore Harborplace Hotel
CountryUnited States
CityBaltimore
Period14/05/201816/05/2018

Keywords

  • Tip vortex cavitation
  • Marine propeller
  • CFD
  • DES
  • Hull wake
  • Adaptive grid

Cite this

Shin, K. W., & Andersen, P. (2018). CFD analysis of propeller tip vortex cavitation in ship wake field. Paper presented at 10th Symposium on Cavitation (CAV2018) , Baltimore, United States.
Shin, Keun Woo ; Andersen, Poul. / CFD analysis of propeller tip vortex cavitation in ship wake field. Paper presented at 10th Symposium on Cavitation (CAV2018) , Baltimore, United States.5 p.
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title = "CFD analysis of propeller tip vortex cavitation in ship wake field",
abstract = "TVC on marine propellers in behind-hull conditions is a challenging problem for numerical predictions, because it is deformed in turbulent viscous interactions with hull wake, propeller-induced flows and rudder disturbance. DES is made for cavitating flows on a propeller and a rudder of a military vessel with a 3.5° shaft inclination in non-uniform hull wake. While a cavitation tunnel test shows TVC extending over the rudder, only a short extent of TVC is reproduced in DES on the initial grid. After an adaptive grid refinement based on the Q-criterion, a larger extent of TVC is simulated and the first- and second-order pressure pulses on two points above the propeller are closer to the experimental measurements. The effects of hull wake, propeller-induced flow, rudder disturbance and shaft inclination on TVC are analyzed by looking into the deformation of the helical trajectory identified by a Q-criterion iso-surface",
keywords = "Tip vortex cavitation, Marine propeller, CFD, DES, Hull wake, Adaptive grid",
author = "Shin, {Keun Woo} and Poul Andersen",
year = "2018",
language = "English",
note = "10th Symposium on Cavitation (CAV2018) ; Conference date: 14-05-2018 Through 16-05-2018",

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Shin, KW & Andersen, P 2018, 'CFD analysis of propeller tip vortex cavitation in ship wake field' Paper presented at 10th Symposium on Cavitation (CAV2018) , Baltimore, United States, 14/05/2018 - 16/05/2018, .

CFD analysis of propeller tip vortex cavitation in ship wake field. / Shin, Keun Woo; Andersen, Poul.

2018. Paper presented at 10th Symposium on Cavitation (CAV2018) , Baltimore, United States.

Research output: Contribution to conferencePaperResearchpeer-review

TY - CONF

T1 - CFD analysis of propeller tip vortex cavitation in ship wake field

AU - Shin, Keun Woo

AU - Andersen, Poul

PY - 2018

Y1 - 2018

N2 - TVC on marine propellers in behind-hull conditions is a challenging problem for numerical predictions, because it is deformed in turbulent viscous interactions with hull wake, propeller-induced flows and rudder disturbance. DES is made for cavitating flows on a propeller and a rudder of a military vessel with a 3.5° shaft inclination in non-uniform hull wake. While a cavitation tunnel test shows TVC extending over the rudder, only a short extent of TVC is reproduced in DES on the initial grid. After an adaptive grid refinement based on the Q-criterion, a larger extent of TVC is simulated and the first- and second-order pressure pulses on two points above the propeller are closer to the experimental measurements. The effects of hull wake, propeller-induced flow, rudder disturbance and shaft inclination on TVC are analyzed by looking into the deformation of the helical trajectory identified by a Q-criterion iso-surface

AB - TVC on marine propellers in behind-hull conditions is a challenging problem for numerical predictions, because it is deformed in turbulent viscous interactions with hull wake, propeller-induced flows and rudder disturbance. DES is made for cavitating flows on a propeller and a rudder of a military vessel with a 3.5° shaft inclination in non-uniform hull wake. While a cavitation tunnel test shows TVC extending over the rudder, only a short extent of TVC is reproduced in DES on the initial grid. After an adaptive grid refinement based on the Q-criterion, a larger extent of TVC is simulated and the first- and second-order pressure pulses on two points above the propeller are closer to the experimental measurements. The effects of hull wake, propeller-induced flow, rudder disturbance and shaft inclination on TVC are analyzed by looking into the deformation of the helical trajectory identified by a Q-criterion iso-surface

KW - Tip vortex cavitation

KW - Marine propeller

KW - CFD

KW - DES

KW - Hull wake

KW - Adaptive grid

M3 - Paper

ER -

Shin KW, Andersen P. CFD analysis of propeller tip vortex cavitation in ship wake field. 2018. Paper presented at 10th Symposium on Cavitation (CAV2018) , Baltimore, United States.