Browse > Article
http://dx.doi.org/10.3744/SNAK.2020.57.3.133

Study of the Resistance Test and Wall Blockage Correction Method for the Submerged Body in LCT  

Ahn, Jong-Woo (Korea Research Institute of Ships & Ocean Engineering)
Seol, Han-Shin (Korea Research Institute of Ships & Ocean Engineering)
Park, Young-Ha (Korea Research Institute of Ships & Ocean Engineering)
Kim, Ki-Sup (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.57, no.3, 2020 , pp. 133-139 More about this Journal
Abstract
In order to study the resistance test technique for the submerged body in Large Cavitation Tunnel (LCT), DARPA Suboff, submarine model publicly available was manufactured. DTRC released the resistance test data of DARPA Suboff conducted at ship speeds up to 18.0 knots in high-speed towing tank in 1990. As LCT is considered restricted waterways with walls, the resistance test results must be corrected with three wall blockage effects called buoyancy effect, solid blockage effect and wake blockage effect. Before correction, the resistance of LCT was 16~20 % higher than that of DTRC. After correction, the resistance and the resistance coefficients were compared with those of DTRC. The corrected resistance of LCT shows good agreement with that of DTRC. The residual resistance coefficient shows the difference according to the calculation method of buoyancy and frictional resistance coefficient. This paper suggests the best way for the calculation of residual resistance coefficient, On the basis of the present study, it is thought that the operating conditions for the propeller cavitation and noise tests can be drawn through LCT tests.
Keywords
Submerged body; Resistance test; Wall blockage correction; Large Cavitation Tunnel(LCT);
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ahn, J.W., Kim, G.D., Kim, K.S. & Park, Y.H., 2015. Performance trial-test of the full-scale driving pump for the Large Cavitation Tunnel(LCT). Journal of Society of Naval Architects of Korea, 52(6), pp.428-434.   DOI
2 Ahn, J.W., Park, Y.H., Kim, K.S. & Choi, D.H., 2012, High-capacity 3 component load cell for resistance measurement, Patent Number 10-1160617.
3 Byeon, C.Y., Kim, J.I., Park, I.R. & Seol, H.S., 2018. Resistance and self propulsion simulations for the DARPA SUBOFF submarine by using RANS method. Journal of Computational Fluids Engineering, 23(3), pp.36-46.   DOI
4 Crook, B., 1990. Resistance for DARPA suboff as represented by model 5470, David taylor research center report, Report No DTRC/SHD-1298-07.
5 Groves, N., Huang, T. & Chang, M., 1989. Geometric characteristics of DARPA suboff models david taylor research center report, Report No DTRC/SHD-1298-01.
6 Kim, H.T., Kim, H.T. & Lee D.Y., 2019. Study on the skin-friction drag reduction phenomenon by air layer using CFD technique. Journal of Society of Naval Architects of Korea, 56(4), pp.361-372.   DOI
7 Rae, W.H. & Pope, A., 1984. Low-speed wind tunnel testing - 2nd Edition, John Wiley & Sons.
8 White, F.M., 1974, Viscous fluid flow, McGRAW-HILL book company.