The incompressible turbulent free surface flow around the complex hull form of the DTMB 5415 model at two different speeds has been numerically simulated using the RANSE code CFX. The Volume of Fluid method (VOF) has been used with CFX for capturing the free surface flow around the ship model...
一 IOWA exploite d b y Stem .While all t h ese work s a r e based on simple algebraic turbulence model ( SSGS is use d in WIS- DAM a n d BL is adopted in C兀)SH 【 I) 一IOW_ A ) . it iS obvious t h at mor e adva n ce d turbulence model shoul d b e teste d ...
第十五届中国国际船艇及其技术设备展览会暨高性能船学术报告会 2010年4月8—11日[9]F.Menter.Influenceoffreestreamvalueson k一够turbulencemodelpredictions。AI从。】992.[10]F.Menter,Zonaltwo—equationk-∞turbulencemodelsforaerodynamicflows,inA【舣24thFluidDynamicsConference。AIAAPaper93—2906,(Orlando,FL),...
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Results are presented from overlapping towing tank tests between three institutes for resistance, sinkage and trim, wave profiles and elevations, and nominal wake using the same model geometry and conditions, including rigorous application of standard uncertainty assessment procedures. Two of the institute...
DTMB 5415船绕流场数值研究
This paper aims to obtain mathematical model of the full-scope roll motion for DTMB 5415 Combatant Warship and provide an optimal control by using Active Roll Fin Stabilizer (ARFS) structures. The mathematical model of the warship and the actuator model have been obtained in according to literatur...
With both manoeuvres executed at approach speed corresponds to Fr = 0.41, two different propulsion techniques are applied to drive the free running vessel; the body force propeller model (BFM) and the discretised propeller model (DPM). A verification and validation study is also performed for ...
is proposed, addressing the issue of quantitatively evaluating errors in breaking wave surface measurements.The wave surface elevation and velocity fields are obtained for the DTMB 5415 model at high Froude number resulting in new insight of unsteady breaking bow wave and its energy attenuation ...
In this paper, DTMB5415 is taken as the research object, DES model and Lagrange particle are adopted, DDES is selected for numerical calculation, and the relationship between bubble trajectory, bubble particle diameter, and ship speed are investigated. The results show that bubble diameter and ...