UNCERTAINTY QUANTIFICATION OF SELF-PROPULSIONANALYSES WITH RANS-CFD AND COMPARISON WITHFULL-SCALE SHIP TRIALS

Brodogradnja

article

Saydam, Ahmet Ziya¹  Küçüksu, Gözde Nur²  İnsel, Mustafa²  Gökçay, Serhan² 

[1] Piri Reis University;Hidroteknik Nautical Design Technologies Ltd.

关键词: CFD;    RANS;    full-scale;    uncertainty;    self-propulsion;   

DOI  :  10.21278/brod73406

学科分类：工程和技术（综合）

来源: Brodarski Institut

【 摘 要 】

RANS-CFD is a well-established tool with widespread use in maritime industry andresearch. Valuable information might be extracted from the results of such simulations in termsof ship resistance and flow field variables. With recent advancements in computational power,it became possible to investigate the performance of ships in self-propulsion conditions withRANS method. This paper presents the results of a study in which self-propulsion analyses ofa small size product/oil tanker has been carried out at ship scale. The methodology proposed inthis study makes use of open water propeller performance predictions, resistance analyses atmodel scale and self-propulsion computations at ship scale for a minimum of 2 differentpropeller loadings to obtain the self-propulsion point and respective performance parameters.In order to speed up the time-consuming self-propulsion computations, these cases have beensolved with a single-phase approach. Resistance predictions have been compared withexperimental findings. Uncertainty associated with prediction of resistance and thrust has beenquantified. Additionally, sea trials have been conducted on the subject vessel and its two sistersand measured delivered power data have been used for evaluating the capability of thenumerical method in self-propulsion predictions. Comparison of results indicate that theproposed self-propulsion computation methodology with RANS CFD at ship scale is capableof predicting delivered power with sufficient accuracy at an acceptable computational cost.

【 授权许可】

CC BY