Twenty-Fourth Symposium on Naval Hydrodynamics (2003) / Chapter Skim
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Calculations of Flows Over Underwater Appended Bodies with High Resolution ENO Schemes
Calculations of Flows Over Underwater Appended Bodies with High Resolution ENO Schemes
Pages 588-594
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From page 588... ...
The appendages include a fairwater, four-wing stern appendages and a ringwing duct. The numerical scheme based on fluxdifference splitting, LU decomposition and implicit high resolution third-order ENO achieved through flux reconstruction, are constructed for efficient simulation of steady-state solution to threedimensional, incompressible conservative NavierStokes equations in general coordinates.
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From page 589... ...
Following the artificial compressibility method, the dependent vector Q in Eq.
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From page 590... ...
, temporal derivative discretization uses the first-order-accurate differencing, inviscid terms use implicit differencing, viscous (17) terms use explicit central differencing, Eq.
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From page 591... ...
The details of numerical dimensionless circumferential-mean velocity and the experimental data can also been found in Table 1. 28 Except one points, the relative error between the numerical results and the experimental data is less than 3%, their average relative error is only 2.107%, the accurate numerical nominal wake at propeller can be used as input data of vehicle propulsor blade design.
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From page 592... ...
The numerical results agree quite well with the experimental data. The schemes and code developed in this paper can be applied in the design of underwater vehicle propulsor and in the optimization and evaluation of its hydrodynamics noise.
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From page 593... ...
/' / /K' ~ 06 0.5 0.4 0.6 0.8 1 Fig. 2 Comparison of numerical circumferentialmean velocity at propeller plane with experimental data — Exp.
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From page 594... ...
l 135 180 deg Fig.3(e) r/R=l.OOO Fig.3 Circumferential variation of axial velocity at difference radius station of propeller plane 0.6 0.4 x 0.2 o 0.6 0.4 0.2 ,ii _ ~!
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