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Memorias de investigación
Artículos en revistas:
On the influence of transition modeling and crossflow effects on open water propeller simulations
Año:2018
Áreas de investigación
  • Arquitectura naval
Datos
Descripción
At model scale propellers, conventional turbulence models assume turbulent regimes all over the blade surface, and consequently do not obtain accurate predictions that can be compared to experimental results. Two aspects could be improved in order to produce a better description of the flow complexity generated in these turbulent rotating systems: the inclusion of transition phenomena assumptions that normally take place in these flows and a particular modeling of those transition mechanisms, such as cross flow, that appear at model scale propellers. In this paper, a new modified ?,Re? correlation-based model for transition prediction, that takes into account crossflow effects is applied to model scale ship propellers for a wide range of advanced ratios, and its results are compared to their corresponding experimental results. The average values of the skin friction coefficients on different parts of the blade and the streamlines distribution are studied and compared between different propellers. The results obtained with these improvements show an agreement of about 1% in terms of efficiency, and below 5% in terms of thrust and torque coefficients when compared to the experimental results at the design point. The dependance of the cross flow mechanism on the Reynolds number is studied by changing the rotating velocity of the different propellers. Results show that the relevance of this mechanism grows when the Rotating velocity, the centrifugal forces and Reynolds number increase. Consequently, when the Reynolds numbers grows, the cross flow transition mechanism is stimulated by the action of the centrifugal forces.
Internacional
Si
JCR del ISI
Si
Título de la revista
Ocean Engineering. Cuartil: Q1; Categoría: Engineering, Marine
ISSN
0029-8018
Factor de impacto JCR
1,894
Información de impacto
Datos JCR del año 2016
Volumen
156
DOI
10.1016/j.oceaneng.2018.02.068
Número de revista
Desde la página
101
Hasta la página
119
Mes
SIN MES
Ranking
Cuartil: Q1; Categoría: Engineering, Marine
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Amadeo Moran Guerrero (UPM)
  • Autor: Leo Miguel Gonzalez Gutierrez (UPM)
  • Autor: Adriana Oliva Remola (UPM)
  • Autor: Hector Ruben Diaz Ojeda (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Centro de Investigación en Simulación Computacional
  • Departamento: Arquitectura, Construcción y Sistemas Oceánicos y Navales (Dacson)
  • Departamento: Mecánica de Fluidos y Propulsión Aeroespacial
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