The solution of free surface viscous flows is one of the most important topics in naval architecture. The numerical simulation of this How field is very diffcult, because of the extremely large Reynolds numbers in practical problems (~ 1UB+ lU9), and the additional complication due to the moving boundary at the airswater interface. The solution of the Navier~ Stokes equations in the whole domain requires a. large amount of computer memory and CPU time, while the inviscid n'1odel (although much cheaper in terms of computer resources) is unable to mimic the formation and growth of boundary layer and wake. In the analysis of this kind of Hows, the zonal approach concepts can be fruitfully exploited to save both computer storage and CPU time. The full viscous model is solved only in the neighbourhood of rigid boundaries and wakes, while the external flow, where viscous effects are supposed to be negligible, is …

VISCOUS-INVISCID COUPLING IN SHIP HYDRODYNAMICS

DIMASCIO, A
Conceptualization
;
1992-01-01

Abstract

The solution of free surface viscous flows is one of the most important topics in naval architecture. The numerical simulation of this How field is very diffcult, because of the extremely large Reynolds numbers in practical problems (~ 1UB+ lU9), and the additional complication due to the moving boundary at the airswater interface. The solution of the Navier~ Stokes equations in the whole domain requires a. large amount of computer memory and CPU time, while the inviscid n'1odel (although much cheaper in terms of computer resources) is unable to mimic the formation and growth of boundary layer and wake. In the analysis of this kind of Hows, the zonal approach concepts can be fruitfully exploited to save both computer storage and CPU time. The full viscous model is solved only in the neighbourhood of rigid boundaries and wakes, while the external flow, where viscous effects are supposed to be negligible, is …
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/135259
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