Investigating the Effect of Distance and Diameter Ratios of Spindle Shape Stands on the Amount of Force Generated by Waves in the Base Group in a Regular Arrangement

Subject Areas : hydraulic structures

Mohammad Ghatarband ¹ (Dept. of Marine Engineering, Khorramshahr University of Marine Science and Technology, Iran)
Mehdi Behdarvandi Askar ² (Dept. of Marine Structures, Khorramshahr University of Marine Science and Technology, Iran)

Received: 2018-07-27 Accepted : 2018-09-16 Published : 2018-08-23

Keywords: Wave Force, Base Group, Flow-3D, Spindle shape stands, Numerical Models,

Abstract :

In this research, in order to optimize the marine structures through changing their shape and distances, the force in each of the base group columns was investigated. In the present thesis, the shape of spindle was used for the cross section of the columns because the spindle shape has a better hydrodynamic quality when encountering waves. Moreover, the shape was investigated more closely in four vertex angles encountering waves with the 30°, 45°, 60°, and 90° angles. Afterwards, each of these spindle shapes were investigated in five different equal longitudinal and latitudinal distances with the results being presented in diagrams in the present paper. These five distances presented as dimensionless ratios S/D include 1.8, 2.9, 4, 5.5, and 9. The results indicate that the amount of force is directly proportional to the vertex angle, and inversely proportional to the columns' distance from each other.