Results 61 to 70 of about 196,918 (182)

Numerical study on the hydrodynamic performance of the semi-spade rudder and propeller

Advances in Mechanical Engineering, 2019
The semi-spade rudder and KP458 propeller of the KVLCC2 (KRISO very large crude carrier) model tanker are adopted by ITTC maneuvering technical committee in the comparative study of ship maneuverability.
Xiao Yang, Yong Yin, Jing-Jing Lian
doaj   +1 more source

Polymer drift in a solvent by force acting on one polymer end

, 2007
We investigate the effect of hydrodynamic interactions on the non-equilibrium drift dynamics of an ideal flexible polymer pulled by a constant force applied at one end of the polymer using the perturbation theory and the renormalization group method. For
Brochard-Wyart F, Doi M, Norio Kikuchi, Rzehak R, Semjon Stepanow   +4 more
core   +1 more source

System Identification Determination of Ship Maneuvering Hydrodynamic Coefficients Based on Free-running Model Test Results

نشریه مهندسی دریا, 2015
Ship maneuvering performance evaluation is essential for primary design stages. Ship maneuvering calculations, horizontal plane motion control and development of maneuvering simulators need a mathematical description of ship maneuvering.
Sajad Hajizadeh, Mohammad saeid seif, hamid Mehdigholi   +2 more
doaj  

Estimation of Maneuvering Coefficients of the KCS Using Captive Model Test Simulations in the OpenFOAM Framework

한국해양공학회지
The accurate prediction of ship maneuvering performance is crucial for ensuring maritime safety and operational efficiency. With increasing ship sizes and complex operating conditions, more advanced computational tools are increasingly required.
Minsu Cho, Theo Descamps, Benjamin Bouscasse, Young-Myung Choi   +3 more
doaj   +1 more source

Experimental Study on the Effect of the Rack Structure on the Hydrodynamic Characteristics of Truss-type Leg

Shiyou jixie, 2019
The rack and pinion system is the most commonly used lifting system for jack-up offshore platforms. There are relatively few studies on the influence of rack structure on the hydrodynamic characteristics of truss-type legs.
Li Xiangkun, Xie Yingchun, Liu Guijie, Tian Xiaojie   +3 more
doaj  

A first order friction model for lubricated sheet metal forming

Theoretical and Applied Mechanics Letters, 2018
: This paper presents the derivation of a first order friction model for lubricated sheet metal forming. Assuming purely plastic real contacts, Newton's law of viscosity, and a square root behavior of the hydrodynamic coefficient of friction with respect
Hans B. Löfgren
doaj   +1 more source

Impurity in a granular gas under nonlinear Couette flow

, 2008
We study in this work the transport properties of an impurity immersed in a granular gas under stationary nonlinear Couette flow. The starting point is a kinetic model for low-density granular mixtures recently proposed by the authors [Vega Reyes F et al.
, Abramowitz M, Andrés Santos, Bird G I, Francisco Vega Reyes, Garzó V, Garzó V, Martin P A, Vega Reyes F, Vega Reyes F, Vega Reyes F Santos A Garzó V, Vicente Garzó   +11 more
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Comment on "Generalized exclusion processes: Transport coefficients"

, 2016
In a recent paper Arita et al. [Phys. Rev. E 90, 052108 (2014)] consider the transport properties of a class of generalized exclusion processes. Analytical expressions for the transport-diffusion coefficient are derived by ignoring correlations.
Becker, T., Broeck, C. Van den, Cleuren, B., Nelissen, K., Partoens, B.   +4 more
core   +1 more source

Hydrodynamic coefficients identification of ship simplified modular model based on support vector regression

Zhongguo Jianchuan Yanjiu
ObjectivesTo address the issue of multicollinearity and parameter drift in the identification of hydrodynamic coefficients in ship separated-type models, this paper proposes a method for modeling simplified three-degree-of-freedom modular models based on
Lifei SONG, Yuqing WANG, Wei PENG, Peiyong LI, Yushan LIu, Yongfeng ZHANG   +5 more
doaj   +1 more source

Poisson-Bracket Approach to the Dynamics of Nematic Liquid Crystals. The Role of Spin Angular Momentum

, 2005
Nematic liquid crystals are well modeled as a fluid of rigid rods. Starting from this model, we use a Poisson-bracket formalism to derive the equations governing the dynamics of nematic liquid crystals.
A. Saupe, F. M. Leslie, H. Goldstein, H. Mori, H. Stark, J. L. Ericksen, K. Kawasaki, M. Grmela, P. Chaikin, P. G. de Gennes, P. G. de Gennes, R. Zwanzig, S. Hess, S. R. de Groot, T. C. Lubensky   +14 more
core   +1 more source