Propeller boss cap fins on efficiency and wake instability mechanism

被引：0

作者：

Yu, Jiawei ^{[1
]}

Zhou, Bo ^{[1
]}

Yi, Wenxin ^{[1
]}

Zou, Jiahe ^{[1
]}

Han, Xiaoshuang ^{[2
]}

Luo, Wenqing ^{[3
]}

机构：

[1] Dalian Univ Technol, Sch Naval Architecture Engn, State Key Lab Struct Anal, Optimizat & CAE Software Ind Equipment, Dalian 116024, Peoples R China

[2] Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China

[3] Dalian Cosco KHI Ship Engn Co Ltd, Dalian 116052, Peoples R China

来源：

PHYSICS OF FLUIDS | 2025年 / 37卷 / 02期

基金：

中国国家自然科学基金;

关键词：

EVOLUTION; PERFORMANCE; DYNAMICS; DESIGN; ANGLE; PBCF;

D O I：

10.1063/5.0251543

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this study, Reynolds-averaged Navier-Stokes and large eddy simulation methods are used to analyze the propeller boss cap fins (PBCF) parameter matching and wake field dynamics characteristics of propeller. The new PBCF optimizes the pressure field behind the hub cap by interfering with the wake flow, reducing torque, increasing thrust, and improving the propeller efficiency of the optimized PBCF by 2.433%. On this basis, the effects of weakened hub vortex on tip and sheet vortices after installation of PBCF are summarized, and the resulting wake instability is analyzed. After installing PBCF, the weakened hub vortex tended to interact with each other and from clusters. Furthermore, the interaction of the sheet vortices is influenced by the PBCF, and the deformation of sheet vortices changes. In particular, the reduction in the tip vortex to vortex distance after installation of PBCF occurred further downstream. In the far field, the wake field is disrupted and chaotic. It is shown that the installation of PBCF changes the characteristics of wake field and improves the efficiency of propeller.

引用

页数：22

共 39 条

[1] EFFECT OF THE INCLINE ANGLE OF PROPELLER BOSS CAP FINS (PBCF) ON SHIP PROPELLER PERFORMANCE [J].

Abar, Insanu Abdilla Cendikia ;

Utama, I. Ketut Aria Pria .

INTERNATIONAL JOURNAL OF TECHNOLOGY, 2019, 10 (05) :1056-1064

[2] On the instability mechanisms of ship propeller wakes [J].

Ahmed, Shakeel ;

Croaker, Paul ;

Doolan, Con J. .

OCEAN ENGINEERING, 2020, 213

[3]

[Anonymous], 2020, Fourth IMO Greenhouse Gas Study 2020

[4]

Di Felice F, 2004, J SHIP RES, V48, P168

[5] On the wake dynamics of a propeller operating in drift [J].

Di Mascio, A. ;

Muscari, R. ;

Dubbioso, G. .

JOURNAL OF FLUID MECHANICS, 2014, 754 :263-307

[6] Propeller wake evolution mechanisms in oblique flow conditions [J].

Felli, M. ;

Falchi, M. .

JOURNAL OF FLUID MECHANICS, 2018, 845 :520-559

[7] Mechanisms of evolution of the propeller wake in the transition and far fields [J].

Felli, M. ;

Camussi, R. ;

Di Felice, F. .

JOURNAL OF FLUID MECHANICS, 2011, 682 :5-53

[8]

Felli M, 2007, Fluid dynamics of marine propellers: Wake evolution, instability and interaction with the propelled unit

[9] Effect of the number of blades on propeller wake evolution [J].

Felli, Mario ;

Guj, Giulio ;

Camussi, Roberto .

EXPERIMENTS IN FLUIDS, 2008, 44 (03) :409-418

[10] Analysis of the propeller wake evolution by pressure and velocity phase measurements [J].

Felli, Mario ;

Di Felice, Fabio ;

Guj, Giulio ;

Camussi, Roberto .

EXPERIMENTS IN FLUIDS, 2006, 41 (03) :441-451

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