NUMERICAL PREDICTION OF SCALE EFFECTS ON THEPROPULSION PERFORMANCE OF JOUBERT BB2 SUBMARINE

Brodogradnja

article

Dogrul, Ali¹ 

[1] Department of Naval Architecture and Marine Engineering, Turkish Naval Academy, National Defense University

关键词: Body force;    CFD;    Joubert BB2;    MARIN 7371R;    Self-propulsion;   

DOI  :  10.21278/brod73202

学科分类：工程和技术（综合）

来源: Brodarski Institut

【 摘 要 】

The motivation of this study is to present the scale effects on the propulsion performanceof Joubert BB2 submarine with MARIN7371R propeller. Joubert BB2 submarine was designedas a realistic attack submarine to be used in benchmarking studies. Numerical analyses wereconducted solving RANS equations. The propeller in the self-propelled case was modeled usingthe body force method. The numerical method was verified both for submarine and open waterpropeller cases. The resistance, open water propeller and propulsion characteristics werevalidated with the available numerical/experimental data. After, the results were extrapolatedto the full-scale and compared with other studies. Full-scale RANS analyses were thenconducted to calculate the resistance and propulsion parameters by eliminating the possiblescale effects. The extrapolated full-scale results were compared with the full-scale analyses andself-propulsion method (SPE) results. The scale effects on the resistance and propulsionparameters were obtained in detail. 1978 ITTC prediction method coupled with the body forcemethod was utilized to observe the scale effects. In addition to this, the practicality of the SPEmethod for the estimation of the propulsive performance was shown. The scale effects on thepropulsive parameters such as nominal wake and thrust deduction factors, open water propellerefficiency and propulsion efficiency were seen.

【 授权许可】

CC BY