Experimental and CFD Resistance Validation of Naval Combatant DTMB 5415-51 Model

Abstract

The hull model of the surface combatant DTMB 5415 has been selected as a recommended benchmark naval ship for computational fluid dynamics (CFD) validation for resistance analysis. CFD is used to present a method for predicting surface combatant ship resistance. The resistance calculations of a 3 m DTMB 5415 hull model was compared using experimental and CFD techniques. The bare hull shape experiments were set up and carried out at the towing tank facilities at the Military Technical College's Hydrodynamic Laboratory in Egypt. A benchmark test will ensure that the equipment, procedures, and estimates of uncertainty are adequate. For the purpose of model validation, CFD calculations for a DTMB 5415-51 model are performed using three different mesh sizes for Froude numbers ranging from 0.10 to 0.40. For the same Froude numbers and free model conditions, results from towing tank experiments on the model's resistance, sinkage, and trim are presented. The numerical simulations are quantitatively consistent. The numerical results are compared in terms of wave field and resistance coefficients to determine the accuracy of the solution parameters. As evidenced by the resistance curves, the experimental investigation appears to provide very good agreement, indicating that the CFD model is capable of simulating the steady flow around a ship hull with acceptable accuracy and can thus be used as a supplement to laboratory model tests for ship design and ship hydrodynamic research.

Numerical Simulation Flow Around the Containership by using CFD Method

“…A more favorable alternative, the CFD method can provide relatively accurate results and furnish more intricate details of the flow around the ship hull with a shorter time and at a lower cost compared to the experimental method [1]. Consequently, the CFD method has been universally adopted for investigating the ship resistance and flow around the hull [2][3][4][5][6][7][8][9][10][11][12][13].…”

“…Their research proved that the chosen turbulence model significantly impacts not only the numerical results in resistance but also the characteristics of flow around the ship. Ahmed et al, [9] used both CFD and experimental methods for validating the resistance of DTMB vessel. Hoa [14] applied CFD method to discover the influence of water depth on ship resistance.…”