Hydraulic head definition

Hydraulic head means the flow of sewage is operating against resistance and the flow depth is above the crown of the sewer pipe.
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Hydraulic head means the elevation to which water rises in a piezometer or a well.
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Hydraulic head means the energy possessed by the water mass at a given point, related to the height above the datum plane that water resides in a well drilled to that point. In a groundwater system, the hydraulic head is composed of elevation head and pressure head.
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Examples of Hydraulic head in a sentence

  • Hydraulic head dh shall be based on published drain manufacturer’s design data or other approved data as a function of flow rate through the cumulative effect of secondary drains for an impounded roof area.

  • Hydraulic head is related to the pore pressure, P (Pa), byPwh = r g (4)where rw (kg m23) is the density of water and g¼( 9.81 m s22) is the acceleration due to gravity.¼ ¼The head at x 0 and flow at x Ls as functions of time were obtained by numerically inverting the Laplace transform solution given in Appendix 1.

  • Hydraulic head at the water table surface and any hydraulic heads at depth will be the calibration parameters.

  • Hydraulic head is calculated by subtracting the depth to water from the elevation of the top of the well.

  • Hydraulic head lateral propagation is controlled by diffusivity D = K.esat / θ.

  • Hydraulic head elevation (H) was computed assuming a single estimated mean annual barometric pressure for each well location, and periods immediately following deployment or sampling when the water level was clearly disturbed were excluded.Most water samples were collected in September and October 2017, when the majority of MBs and piezom- eters were installed and the most complete sample set was collected from the site.

  • Hydraulic head and temper- ature distribution along the upper boundary are a function of elevation, where the water table is assumed to be similar to the topography and temperature is approximated by the mean adiabatic lapse rate (MALR).X - 16 SAAR AND MANGA: DEPTH DEPENDENCE OF PERMEABILITY Hurwitz et al.

  • Hydraulic head, hydraulic conductivity, and storativity estimates will be compared to quantify any changes in hydraulic properties caused by barrier emplacement.

  • Hydraulic Head • Hydraulic head is greater in the Boulder Zone than in the overlying monitoring zones(ca.

  • Hydraulic head interpolation using anfis—model selection and sensitivity analysis.


More Definitions of Hydraulic head

Hydraulic head means the energy contained at a point in the groundwater system. Hydraulic head is measured as the elevation to which water rises in a piezometer.
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Hydraulic head means a specific measurement of liquid pressure above a geodetic datum that is usually measured as a liquid surface elevation, expressed in units of length, at the entrance or bottom of a piezometer.
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Hydraulic head means the pressure in a closed water or sewer pipe system where the pressure is over and above the atmospheric pressure.
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Hydraulic head means the height of water above any plane of reference; “Hydraulic head” also means the energy, either kinetic or potential, possessed by each unit weight of a liquid, expressed as the vertical height through which a unit weight would have to fall to release the average energy possessed.
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Related to Hydraulic head

  • Hydraulic fracturing means the fracturing of underground rock formations, including shale and non-shale formations, by manmade fluid-driven techniques for the purpose of stimulating oil, natural gas, or other subsurface hydrocarbon production.

  • Hydraulic lift tank means a tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air or hydraulic fluid to operate lifts, elevators, and other similar devices.

  • Standard Methods for the Examination of Water and Wastewater means the most recent edition of Standard Methods for the Examination of Water and Wastewater published jointly by the American Public Health Association, the American Waterworks Association and the Water Environment Federation;

  • Production, Use or Storage of Nuclear Material means the production, manufacture, enrichment, conditioning, processing, reprocessing, use, storage, handling and disposal of Nuclear Material.

  • Underground source of drinking water means an aquifer or its portion:

  • Process Wastewater means any water which, during manufacturing or processing, comes into direct contact with or results from the production or use of any raw material, intermediate product, finished product, by-product, or waste product.

  • Potable means water suitable for drinking by the public.

  • Membrane filtration means a pressure or vacuum driven separation process in which particulate matter larger than one micrometer is rejected by an engineered barrier, primarily through a size exclusion mechanism, and which has a measurable removal efficiency of a target organism that can be verified through the application of a direct integrity test. This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

  • Filtration means a process for removing particulate matter from water by passage through porous media.

  • Flea and tick insecticide means any insecticide product that is designed for use against fleas, ticks, their larvae, or their eggs. “Flea and Tick Insecticide” does not include products that are designed to be used exclusively on humans or animals and their bedding.

  • Pyrolysis means the thermal degradation of a substance in the absence of any oxidising agent, which does not form part of the substance itself, to produce char and gas and/or liquid; and

  • Irrigation means application of water to land areas to supply the water needs of

  • Exfiltration means any unauthorized release of data from within an information system. This includes copying the data through covert network channels or the copying of data to unauthorized media.

  • Sewage sludge weight means the weight of sewage sludge, in dry U.S. tons, including admixtures such as liming materials or bulking agents. Monitoring frequencies for sewage sludge parameters are based on the reported sludge weight generated in a calendar year (use the most recent calendar year data when the NPDES permit is up for renewal).

  • Oxides of nitrogen means the sum of the volume mixing ratio (ppbv) of nitrogen monoxide (nitric oxide) and nitrogen dioxide expressed in units of mass concentration of nitrogen dioxide (μg/m3);

  • Cabinet x-ray system means an x-ray system with the x-ray tube installed in an enclosure independent of existing architectural structures except the floor on which it may be placed. The cabinet x-ray system is intended to contain at least that portion of a material being irradiated, provide radiation attenuation, and exclude personnel from its interior during generation of radiation. Included are all x-ray systems designed primarily for the inspection of carry-on baggage at airline, railroad, and bus terminals, and in similar facilities. An x-ray tube used within a shielded part of a building, or x-ray equipment that may temporarily or occasionally incorporate portable shielding, is not considered a cabinet x-ray system.

  • Riprap means small, broken stones or boulders placed compactly or irregularly on dykes or similar embankments for protection of earth surfaces against wave action or current;

  • Electrical protection barrier means the part providing protection against any direct contact to the high voltage live parts.

  • Sewage treatment plant means any arrangement of devices and structures used for treating sewage.

  • Valve means a device used to control the flow of water in the irrigation system.

  • Electrostatic spray means a method of applying a spray coating in which opposite electric charges are applied to the substrate and the coating. The coating is attracted to the substrate by the electrostatic potential between them.

  • Traffic control signal means a device, whether manually, electrically, or mechanically operated, by which traffic is alternately directed to stop and permitted to proceed.

  • Architectural coating means a coating applied to stationary structures and their appurtenances, to mobile homes, to pavements, or to curbs.

  • Industrial wastewater means the water or liquid carried waste from an industrial process. These wastes may result from any process or activity of industry, manufacture, trade or business, from the development of any natural resource, or from animal operations such as feedlots, poultry houses, or dairies. The term includes contaminated storm water and leachate from solid waste facilities.

  • Fluoroscopic imaging assembly means a subsystem in which X-ray photons produce a visual image. It includes the image receptor(s) such as the image intensifier and spot-film device, electrical interlocks, if any, and structural material providing linkage between the image receptor and diagnostic source assembly.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which (1) a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and (2) while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.