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Riccardo Broglia Stefano Zaghi Andrea Di Mascio 《Journal of Marine Science and Technology》2011,16(3):254-269
The simulations of the flow around a high-speed vessel in both catamaran and monohull configurations are carried out by the
numerical solution of the Reynold averaged Navier–Stokes (RANS) equations. The goal of the analysis is the investigation of
the interference phenomena between the two hulls, with focus on its dependence on the Reynolds number (Re). To this aim, numerical
simulations are carried out for values of Re ranging from 106 to 108 for two different values of the Froude number (Fr = 0.30, 0.45). Wave patterns, wave profiles, limiting streamlines, surface pressure and velocity fields are analyzed; comparison
is made between the catamaran and the monohull configurations. Dependence of the pressure and viscous resistance coefficients,
as well as of the interference factor, on the Reynolds number is investigated. Verification and validation for both resistance
coefficients and wave cuts is also performed. 相似文献
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Riccardo Russo Mario Terzo Francesco Timpone 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2007,45(2):149-163
In this article, a logic for vehicle dynamics control during partial braking while turning a corner is presented, which only requires knowledge of the instantaneous speed of the four wheels. For this reason, the proposed control algorithm can be adopted on all ABS equipped cars. A scheme of the simulation program for logic validation is described, which is constituted by a loop of software models of the principal vehicle subsystems which are singly illustrated. The proposed logic has been tested both in closed and open-loop maneuvers. The results are provided in the form of time histories of the principal analyzed quantities. The analysis of the results confirms the goodness of the proposed control strategy. 相似文献
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