It is important to predict the self-propulsion performance of full-scale marine vessels during the design stage. With the development of high-performance computational techniques, full-scale ship-free running simulations focused on self-propulsion performance are receiving increased attention. This study presents the results of computational fluid dynamics (CFD) simulations for a full-scale submarine propelled by a high-skew propeller. An in-house CFD code with the dynamic overset grid approach is used to simulate the rotational motion of the propeller. First, model- and full-scale simulations focused on submarine resistance and propeller open-water performance are conducted, enabling a systematic convergence study of the model. The self-propulsion performance is then predicted at the model scale, and comparisons with other available results show only small discrepancies. Finally, full-scale submarine self-propulsion simulations are conducted and the results are compared with those from the model-scale simulations with the addition of skin friction correction. Discussions on the differences between model- and full-scale self-propulsion results are presented including propeller performance, pressure distribution, boundary layer, and wake flow.
Full-scale simulation of self-propulsion for a free-running submarine
Note: This paper is part of the special topic, Advances in CFD Methods, Simulations and Applications.
Liwei Liu, Meixia Chen, Jiawei Yu, Zhiguo Zhang, Xianzhou Wang; Full-scale simulation of self-propulsion for a free-running submarine. Physics of Fluids 1 April 2021; 33 (4): 047103. https://doi.org/10.1063/5.0041334
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