- 著者
-
児玉 良明
- 出版者
- 公益社団法人日本船舶海洋工学会
- 雑誌
- 日本造船学会論文集 (ISSN:05148499)
- 巻号頁・発行日
- no.172, pp.147-155, 1992-12
- 被引用文献数
-
16
6
A globally conservative NS solver for flow past a ship hull has been developed. It uses a 3rd-order accurate upwind differencing of the preprocessing (MUSCL) type for inviscid terms, in which the non -uniformity of grid spacing is taken into account. Using the solver, the drag of a fiat plate at zero incidence was computed in the Reynolds number range R_e=4.0 × 10^5 to R_e=4.0 × 10^7. The dependence of the drag on the degree of clustering of grid points was checked. The computed drag agreed with the Schoenherr value within 4%. An appropriate criterion for the minimum grid spacing Δ_<min> adjacent to solid wall with this particular scheme seems to be Δ_<min>=0.005/√<R_e>. Then the drag of the Series 60 (C_B=0.6) ship hull with the double model assumption was computed in the same Reynolds number range using grids with various Δ_<min> and various degree of clustering toward bow and stem. Although the computed drag values showed some scattering among different grids, the results with the smallest Δ_<min> agreed well with the measured values throughout the Reynolds number range.