Topic
Added mass
About: Added mass is a research topic. Over the lifetime, 2849 publications have been published within this topic receiving 47899 citations.
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TL;DR: In this article, potential flow theory predicts that the added mass of a cylinder near a plane boundary is independent of the direction of the flow and more than twice as large as that of the same cylinder far away from the boundary.
Abstract: Potential flow theory predicts: (1) the added mass of a cylinder near a plane boundary is independent of the direction of the flow and more than twice as large as that of the same cylinder far away from the boundary; (2) a possible failure mechanism of alternating positive and negative lift force, which is proportional to horizontal velocity squared, for pipelines resting on the bottom boundary and subjected to waves and currents; and (3) the force from convective acceleration of the ambient flow can be as large as 30% of total acceleration force for waves. Laminar boundary-layer theory suggests that a phase shift exists between maximum velocity and maximum drag force for cylinders subjected to waves. Laboratory wave force experimentation confirms the aforementioned theoretical findings 1 and 2.
41 citations
TL;DR: In this paper, a dual-arm underwater vehicle-manipulator system (UVMS) is used for object manipulation in an underwater environment, where impacts due to contact are inevitable.
41 citations
TL;DR: In this article, the Stokes resistance, added mass, and Basset force of spheroids were computed for finite-length, circular cross-section cylinders using a boundary integral formulation.
Abstract: The Stokes resistance, added mass, and Basset force are numerically computed for finite‐length, circular cross‐section cylinders using a boundary integral formulation. Numerical results are presented for cylinders translating parallel and perpendicular to their symmetry axes with length‐to‐width ratios in the range: 0.01≤a/b≤100. There is good agreement with the limited experimental and numerical results of previous studies and slender‐body theory. Simple, analytical formulas for the Stokes force, added mass, and Basset force of spheroids are contrasted with the numerical results for cylinders of the same aspect ratio. For some of these parameters, significant differences persist for disk‐ and rod‐shaped particles.
40 citations
TL;DR: A new time-splitting scheme for the numerical simulation of fluid–structure interaction between blood flow and vascular walls that embodies the stability properties of implicit schemes at the low computational cost of loosely coupled ones.
40 citations
TL;DR: In this article, the virtual mass and drag effects in a fluid suspension consisting of spherical particles immersed in an incompressible, nearly inviscid fluid were studied by the method of ensemble averaging.
Abstract: We study virtual mass and drag effects in a fluid suspension consisting of spherical particles immersed in an incompressible, nearly inviscid fluid. We derive average equations of motion for the fluid phase and the particle phase by the method of ensemble averaging. We show that the virtual mass and drag coefficients may be expressed exactly in terms of the dielectric constant of a corresponding dielectric suspension with the same distribution of particles. We make numerical predictions for the case of an equilibrium distribution of hard spheres.
40 citations