Reducing air resistance acting on a ship by using interaction effects between the hull and accommodation

Estimating Hull Resistance of a Pontoon by using CFD

“…In this section, the hull resistance of the pontoon has been investigated by using commercial CFD code ANSYS-Fluent will be presented. The computation case has been done step by step following the schema for using CFD as well as useful guidlines and many published experiences in useing CFD to The effects of a mesh of the computed domain on the CFD results have been reported in many previous papers [7,11,12,14,16,[18][19][20][21][22][23]. This study uses several different meshes of the computed domain to simulate the pontoon in calm water at the Froude number of 0.36.…”

“…In recent years, Computational Fluid Dynamic (CFD) has gained high popularity for predicting the hull resistance of the ship because of its high efficiency and economy. The accuracy of the CFD results has improved significantly; many studies being done on validating the CFD results showing how to predict the hydrodynamic performances and hull resistance of a ship, and so on [11,14,[16][17][18][19][20][21][22]. Others works have developed new hull forms with various attached devices to improve hydrodynamic performances and to reduce resistance of hull forms by using CFD [11,12,14,19,22,23].…”

Effect of mesh on CFD aerodynamic performances of a container ship

“…In CFD, the computed domain has affected CFD results, therefore, the same must be designed following the user guide for applied CFD in ship hydrodynamics or CFD manual published by the ITTC or CFD manufacturer [1]. Moreover, the researcher's experiment is of very importance in using CFD to solve the same problems on aerodynamic performances [9,10,[13][14][15][16]. Figure 2 shows the limited dimension of the computed domain.…”

“…By using CFD simulation and experimental test in towing tank, drastically reduced wind drag acting on the ship had been found. The total wind drag acting on hull could reduce up to 60% of the total wind drag acting on hull [9][10][11]. Other researches on effects of the side guards on aerodynamics performance of a wood chip carrier were presented.…”

Insight into tribological problems of green ship and corresponding research progresses

“…This physical effect of energy exchange is also the frictional resistance, which is the major of the three components of hull resistance. It is claimed that the proportion of frictional resistance in the hull resistance is up to 70%-80% [17], especially for the low-speed and medium-speed vessels. Numerous approaches aiming at the reduction of the frictional resistance of the green ship have been researched, including bionic materials and air bubble lubrication technology.…”