### The Investigations of Horizontal and Vertical Resistance for the Swimmer Delivery Vehicle on Submerged Condition

#### Abstract

This paper is concentrated on the investigation of horizontal and vertical drag/resistance of submerged Swimmer Delivery Vehicle (SDV). For initial estimation, the resistance investigation was carried out by Computational Fluid Dynamics (CFD) approach using a CFD code called Tdyn. Navier-Stoke

Solver was used in Tdyn to solve the fluid flow. The k-ω shear-stress-transport (SST) model was selected for turbulence model. The investigation were carried out at several speeds from 1 to 6 knots for horizontal direction and from 1 to 3 knots for vertical direction with main dimension 4 x 2 x 1,24 m or 1 : 1 scale with single-phase of fluid.

The results of calculation show that the horizontal direction drag is 873,42 N at 6 knot and the vertical direction drag is 7659 N at 3 knot. The resistance of 3 knot vertical direction is higher than horizontal direction with very far distance because of the different of frontal area that to be faced with fluid of the swimmer delivery vehicle. 1 knot speed was considered as maximum vertical direction speed because its resistance is 520 N.

#### Full Text:

PDF#### References

Tdyn. (2014a). Tdyn Theory. Barcelona, Spain.

Tdyn. (2014b). Turbulence Handbook (p. 139). Barcelona, Spain. Retrieved from http://www.compassis.com/downloads/Manuals/TdynTurbulenceHB.pdf

DOI: http://dx.doi.org/10.21535%2FProICIUS.2015.v11.712

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