Coupling wake alignment lifting line method and boundary element method for open water and unsteady propeller simulation

Publikationstyp
Journal Article
Date Issued
2020-10-01
Sprache
English
Author(s)
Wang, Youjiang  orcid-logo
Abdel-Maksoud, Moustafa  orcid-logo
Institut
Fluiddynamik und Schiffstheorie M-8  
TORE-URI
http://hdl.handle.net/11420/7041
Journal
Ocean engineering  
Volume
213
Article Number
107738
Citation
Ocean Engineering (213): 107738 (2020-10-01)
Publisher DOI
10.1016/j.oceaneng.2020.107738
Scopus ID
2-s2.0-85088035205
A coupling algorithm is developed to accelerate the boundary element method for both open water and unsteady calculations. It is realized in the way that the full wake alignment is conducted using the vortex lattice lifting line method with discrete wake sheet. Techniques to convert wake sheets of lifting line to those for boundary element method are described. Numerical simulations for open water and unsteady case are then carried out. It shows that the coupling method predicts similar results as the boundary element method, especially for the open water case. Evident reduction of the computational time is also observed, which is 70% and 65% for open water and unsteady calculation, respectively.
Subjects
Boundary element method
Computational speed
Marine propeller
Wake alignment