Journal ArticleDOI
Potential Flow Past a Group of Circular Cylinders
Charles Dalton,R. A. Helfinstine +1 more
TLDR
In this paper, the problem of an accelerating potential flow past a group of stationary circular cylinders is considered using the method of images, and the problem is formulated so that the number and location of the cylinders is arbitrary so long as there is no overlap between adjacent cylinders.Abstract:
The problem of an accelerating potential flow past a group of stationary circular cylinders is considered using the method of images. The problem is formulated so that the number and location of the cylinders is arbitrary so long as there is no overlap between adjacent cylinders. Inertial and lift coefficients are determined for several different cylinder arrangements. The inertial coefficient for a cylinder can vary in either direction from its single-cylinder value of 2.0. The controlling factors on this variation are the relative geometric position of the cylinder within the group and its distance from its neighbors. These same factors determine, as is expected, the lift coefficient values. In two example configurations, there is even a drag-type force generated on an individual cylinder in the potential flow.read more
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Journal ArticleDOI
The aerodynamic forces acting on groups of two and three circular cylinders when subject to a cross-flow
S.J. Price,Michael P. Païdoussis +1 more
TL;DR: In this paper, the effect of cylinder displacement on the fluid forces for one cylinder in a group of three cylinders was investigated, and it was shown that the effect was similar to that obtained with one cylinder of two cylinders in groups of two.
ReportDOI
Effective mass and damping of submerged structures
TL;DR: In this article, the authors surveyed 32 industrial firms and reviewed 49 technical references to evaluate a wide variety of modeling assumptions currently used in nuclear power plant design analysis and recommend a definite way to evaluate the effect of hydrodynamic forces on these structures.
Journal ArticleDOI
A potential-flow theory for the dynamics of cylinder arrays in cross-flow
TL;DR: In this paper, the authors presented the full linear unsteady potential-flow solution for fluid flowing across a bank of cylinders, where the potential function is expanded into a Fourier series and the boundary condition of impermeability is applied at the moving cylinder surfaces.
Journal ArticleDOI
Breakdown of doublet recirculation and direct line drives by far-field flow in reservoirs: implications for geothermal and hydrocarbon well placement
Ruud Weijermars,A. van Harmelen +1 more
TL;DR: In this paper, the authors show that when an aquifer background flow occurs, doublets will rarely retain closed loops of fluid recirculation, and when the far-field flow rate increases relative to the doublet's strength, the area occupied by the line doublet will diminish and eventually vanishes.
Journal ArticleDOI
Hydrodynamic coefficients for a vertical tube in an array
TL;DR: In this paper, the effect of the spacing of the tubes upon the forces on the tubes is investigated, based on the mean values of the hydrodynamic coefficients, and the correlation between these calculated values and the measured forces is found to be good.