Visous resistance analysis of a ship using numerical solutions

수치해를 이용한 선박의 점성저항 해석

  • 곽영기 (현대중공업(주) 선박해양연구소)
  • Published : 1997.05.01

Abstract

Viscous flow around an actual ship is calculated by an use of RANS(Reynolds-averaged Navier-Stokes) solver. Reynolds stress is modelled by using k-$\varepsilon$ turbulence model and the law of wall is applied near the body. Body fitted coordinates are introduced for the treatment of the complex boundary of the ship hull form. The transformed equations in the computational domain are numerically solved by an employment of FVM(Finite Volume Method). SIMPLE(Semi-Implcit Pressure Linked Equation) method is adopted in the calculation of pressure and the solution of the disssssssscretized equation is obtained by the line-by-line method with the use of TDMA(Tri-Diagonal Matrix Algorithme). The subject ship model of actual calculation is 4,410 TEU class container carrier. For 4 geosim models the calculated viscous resistancce values are compared with the model test results and analyzed on their componentss. The resistance performance of an actual ship is predicted very resonably, so this mothod may be utilized as a design tool of hull form.

Keywords

RANS equation;k-$\varepsilon$ turbulence model;body fitted coordinates;Finite Volume Method;SIMPLE method;viscous resistance;geosim model;form factor

References

  1. Computational Mechanics v.9 no.2 Full Scale Reynolds Number Effects for the Viscous Flow around the Ship Stern Oh, K;Kang, S
  2. TEACH-2E Computation Code Manual Gosman, A.D.;Ideriah, F.J.K.
  3. J. Ship Research v.35 no.2 Stern Flows at Full-Scale Reynolds Number Ju, S;Patel, V.C.
  4. Numerical Heat Transfer and Fluid Flow Patanakar, S.V.
  5. FLOWTECH INTERNATIONAL AB Ship Viscous Flow: Proceedings of 1990 SSPACTH-IIHR Workshop Larsson, L;Patel,V.C.;Dyne,G
  6. 서울대학교 박사학위 논문 수치해를 이용한 콘테이너선의 점성 유동장 및 저항성능 해석 곽영기
  7. Proceedings of CFD Workshop Tokyo 1994
  8. JCP v.98 A Consistently Formulated QUICK scheme for Fast and Stable Convergence Using Finite-Volume Iterative Caculation Procedures Hayase, T;Humphery, J.A.C.;Grief, R
  9. Proc. of 19th ITTC v.1 Report of the Powering Performance Committee ITTC