Comparison of self-propulsion performance between vessels with single-screw propulsion and hybrid contra-rotating podded propulsion

Powering Performance Prediction of a Semi-Displacement Ship Retrofitted with Hull Vane

“…Generally, these representations are investigated in two groups: non-discretized propeller approaches and discretized propeller approaches. The former includes actuator disc models (Đurasević et al, 2022;Jasak et al, 2019;Villa et al, 2019) and body force models based on Blade Element Momentum Theory (BEMT) (Feng et al, 2020), while the latter covers Moving Reference Frame (MRF) (Sezen et al, 2021), sliding mesh (Kinaci et al, 2018;Sezen and Atlar, 2023;Wang et al, 2021), and overset mesh (Đurasević et al, 2022) techniques. For example, within the scope of non-discretized propeller approaches, Sezen et al (2018) modeled the propeller as an actuator disc based on the body force method coupled with the experimental open water data.…”

“…Özsayan et al (2022) computationally explored different pre-swirl stator (PSS) and duct designs to evaluate their impact on the propulsive efficiency of a 7000DWT INSEAN Tanker on model scale. Wang et al (2021) conducted a comparison of the propulsive efficiency of vessels utilizing single-screw propulsion and those employing hybrid contra-rotating podded propulsion. Simulations of propeller configurations have been performed by sliding mesh technique.…”

Numerical investigation on hydrodynamic performance of a novel shaftless rim-driven counter-rotating thruster considering gap fluid

“…The accuracy of the simulation method is verified by comparing with Reynoldsaveraged Navier-Stokes (RANs) method. Wang et al [10] found that the vessel with the hybrid CRP popped pulse showed a 17.59% large effective wave fraction, a 40.2% small thrust division fraction, and a 4.12% high overall productive efficiency compared with the single screen vessel through RANs method.…”