Topic
Hydrostatic head
About: Hydrostatic head is a research topic. Over the lifetime, 169 publications have been published within this topic receiving 1795 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this article, a Hele-Shaw viscous-flow analogue has been used to investigate the causal link between some soil pipes and slope failure, showing that when a pipe is blocked or is a dead-end passageway, the cavity can readily fill with water during rainstorms.
Abstract: Summary Experimentation with a Hele-Shaw viscous-flow analogue apparatus has supported earlier suggestions, based on field evidence, that a causal link may exist between some soil pipes and slope failure. The analogue has shown that when a pipe is blocked or is a dead-end passageway (a closed pipe), the cavity can readily fill with water during rainstorms. Pipes partially filled with standing water will generate pore pressures in the surrounding soil matrix in proportion to the hydrostatic head achieved. Long pipes parallel to the fall line of the slope have the potential, when partially filled with water, of generating soil pore-water pressures much greater than those generated by total saturation of the soil. Such pore-pressure increases could trigger landslides at sites that would otherwise be stable.
137 citations
TL;DR: In this paper, a run-of-river micro-hydro-electric power plant was designed to be a Run-Of-River type, because it requires very little or no reservoir in order to power the turbine.
128 citations
TL;DR: In this paper, the analysis of different basin structures which have the ability to form a gravitational vortex stream from low head, low flow water streams with the optimum runner position in the basin to maximize the output power was carried out by development of the model using CAD software, SolidWorks.
Abstract: Demand of energy is ever increasing, especially in developing countries. Renewable energy such as hydropower has become one of the most demanded sources of energy for its clean generation. Low head hydropower plant is demanded in area which cannot see grid extension due to difficult geographical terrain and other reasons. Gravitational water vortex power plant is one of such low head turbine in which the mechanical energy of free surface flowing water is converted to kinetic energy by tangentially passing the water to a basin, which forms a water vortex. This study is the analysis of different basin structures which has ability to form a gravitational vortex stream from low head, low flow water streams with the optimum runner position in the basin to maximize the output power. The analysis was first carried out by development of the model using CAD software, SolidWorks and it was simulated in commercial CFD code ANSYS Fluent for the measurement of velocity. Secondly, the result so obtained was experimentally verified by measuring the output power.
119 citations
Patent•
Esso1
TL;DR: In this article, an improved system for offshore drilling is presented, which is particularly useful in those operations where a floating vessel is situated at the surface of a body of water and circulation of drilling fluid is accomplished by introducing drilling fluid into a drill string extending from the vessel into a borehole in the floor of the water and returning it through a separate conduit to the vessel.
Abstract: An improved system for offshore drilling is disclosed which is particularly useful in those operations where a floating vessel is situated at the surface of a body of water and circulation of drilling fluid is accomplished by introducing drilling fluid into a drill string extending from the vessel into a borehole in the floor of the body of water and returning it through a separate conduit to the vessel. A surface detectable signal is generated which is proportional to the hydrostatic head exerted by the drilling fluid within the return conduit. Hydrostatic head of the drilling fluid within the return conduit is controlled in response to the signal, as by injecting gas into the conduit near its lower end, to regulate the hydrostatic head of the fluid in the borehole.
101 citations
Patent•
24 Mar 1997
TL;DR: In this article, a method and equipment whereby windmills are used to directly propel water pumps to lift water from a lower elevation body of water to a nearby higher elevation one of water, where it is stored as potential energy.
Abstract: Explained herein is a method and equipment whereby windmills are used to directly propel water pumps to lift water from a lower elevation body of water to a nearby higher elevation body of water, where it is stored as potential energy. In one application of this method, one or more water pumps, each powered directly by a windmill, lift water from downstream of a river, stream, or creek to upstream of a dam at which a hydropower plant is installed. The windmill may be of the vertical-axis or horizontal. Upon demand, the lifted water is used to generate electricity utilizing the hydropower plant. An adjustable weir is constructed across the river, stream, or creek downstream the windmill, whose function is to create a reservoir or pool from which water can be pumped and to regulate the flow of water downstream. The adjustable weir can be raised or lowered by means of a jack or jacks that are controlled by a computer. In another application of this invention, one or more water pumps, each powered directly by a windmill is installed at sites having 2 nearby bodies of water, one higher than the other. The bodies of water may be natural or artificial. The water pump lifts water from the low water to the high water, where it is stored as potential energy. Upon demand, the lifted water can be used to generate electricity utilizing a conventional hydropower plant.
67 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2022 | 1 |
| 2021 | 1 |
| 2020 | 1 |
| 2019 | 1 |
| 2018 | 6 |
| 2017 | 1 |