Transom-stern flow for high-speed craft

Considering Artificial Viscosity in a SPH Model for Simulation of Transom Waves

“…Although, both Fluent and SPH give same accuracy at Fn T = 2, but it is fairly clear that SPH can be more favorable due to its accuracy at both Froude numbers. To prove this declaration, Figs.4 and 5 compare the SPH's wave characteristics with the corresponding results of [16] and [17]. Therefore, it is proved that, at the considered Froude numbers, both RMS and wave characteristic of SPH solution is in better agreement with the experimental data in comparison with numerical solution of Maki et al [16].…”

“…Generally, computational domain is depicted in Fig.2 and it assumed to be extended enough (horizontally and vertically). The obtained results are compared against both experimental [17] and unsteady numerical solutions of [16]. Afterward, the nonlinear features of problem, the free surface fluctuations and the generated breaking wave behind the transom are illustrated.…”

“…Fu et al [3] performed a series of experiments on R/V Athena model and free surface profile behind the transom stern was measured. Maki et al [4] considered a prismatic model with 20 degrees deadrise angle. They studied ventilation process at transom stern, thoroughly.…”

“…They studied ventilation process at transom stern, thoroughly. Two series of experiments were also conducted by Maki et al [5]. They measured transom wave and an empirical relation for transom drying was extended.…”

“…They found that, since the RANS code used was a steady surface fitting method, it did not include all the involved physics such as wave breaking or unsteadiness. Recently, Maki et al [16] used two different numerical models to study transom stern flow, unsteadily. They implemented a two dimensional level set code as well as commercial software Fluent.…”