Showing papers on "Volume of fluid method published in 1984"
Book•
01 Jan 1984
TL;DR: In this article, the authors present a free e-book download service for Free Surface Fluid Flows, called Pressure Methods For The Numerical Solution of Free Surface Fluids.
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33 citations
TL;DR: In this paper, the authors consider a series of problems in which a solid or an immiscible fluid body melts its way through a solid medium and hypothesize that the melted medium is confined to a thin squeeze film on the upstream portion of the body and that the lubrication approximation is valid in this squeeze film.
13 citations
Patent•
04 Dec 1984
TL;DR: In this paper, a well safety valve has a piston and cylinder assembly which is connected to and actuated by a hydraulic control line extending to the well surface for moving the valve to an open position in which the hydrostatic head in the control line is balanced by a fluid column exposed to the opposite side of the assembly acting to close the valve.
Abstract: A well safety valve having a piston and cylinder assembly which is connected to and actuated by a hydraulic control line extending to the well surface for moving the valve to an open position in which the hydrostatic head in the control line is balanced by a fluid column exposed to the opposite side of the assembly acting to close the valve. The fluid column has a greater density than the hydraulic fluid in the control line for biasing the valve to the closed position. The volume of fluid in the fluid column is greater than the volume of fluid in the control line whereby exposure of the fluid column to gas will not substantially change its density. The housing includes a container in communication between the other side of the assembly and the fluid column and contains a grease for protecting the assembly. The grease has a density less than the density of the fluid column and is of a volume greater than the volume displaced in the assembly upon actuation of the piston and cylinder.
11 citations
Journal Article•
TL;DR: In this article, the Holly-Preissmann two-point fourth-order computational method for linear contaminant advection was used for the nonlinear momentum advction terms in the de St. Venant flow equations.
Abstract: Advection, the transport of a quantity by the mean velocity, is a process which appears in virtually all equations of free-surface hydraulics. The demonstrated accuracy and efficiency of the Holly-Preissmann two-point fourth order computational method for linear contaminant advection suggest that the method may also be useful for the nonlinear momentum advection terms in the de St. Venant flow equations. Reformulation of the method to handle the more general nonlinear case is described. How the advection operator can be combined with other terms to form a hybrid characteristics/finite difference scheme, obviating the need for a split operator method as commonly employed is shown. Application of the method to linear and nonlinear test cases, including a phase and amplitude analysis for the linear case, are discussed. The need for further research is highlighted through description of several difficulties encountered in nonlinear trials.
2 citations
Patent•
19 Sep 1984
TL;DR: In this article, a method and apparatus for supplying a heated fluid to a heat consumption circuit, such as an injection mold, is described, which consists of a heat exchanger, for heating the fluid, a pump for pumping the heated fluids to the heat consumption circuits, a reservoir for storing the fluid and a degasifier for degasifying the fluid that returns from the heat consumptions to the apparatus.
Abstract: A method and apparatus for supplying a heated fluid to a heat consumption circuit, such as an injection mold. The apparatus comprises a heat exchanger, for heating the fluid, a pump for pumping the heated fluid to the heat consumption circuit, a reservoir for storing the fluid, and a degasifier for degasifying the fluid that returns from the heat consumption circuit to the apparatus. The heat exchanger, and the pump comprise one compact integral assembly. In addition, the connection between the degasifier and the reservoir is in the form of a siphon which acts as a thermal barrier to prevent the heat from the heated fluid from heating the fluid in the reservoir. As a result of this arrangement, the total volume of fluid used is much smaller than in prior art devices, thereby substantially decreasing the heat losses from the fluid to the environment.
1 citations