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Hydropower terminology
water flow, a larger head could produce the same power with smaller equipment. "What is Hydrostatic Head? We explain". Hydraulic head for a more technical
Hydrostatic_head
Flexible skeleton supported by fluid pressure
considered hydrostatic, they are sometimes referred to as hydrostatic for their possession of a hydrostatic organ instead of a hydrostatic skeleton, where
Hydrostatic_skeleton
Process of making an object or structure waterproof or water-resistant
confused with roofing, since roofing cannot necessarily withstand hydrostatic head while waterproofing can. The standards for waterproofing bathrooms
Waterproofing
Non-destructive test of pressure vessels
A hydrostatic test is a way in which pressure vessels such as pipelines, plumbing, gas cylinders, boilers and fuel tanks can be tested for strength and
Hydrostatic_test
1995 trademark for fabrics used in waterproof clothing
synthetic fabrics, particularly when wet. While only fabrics scoring hydrostatic head measurements of 1000mm or more are technically considered to be fully
Ventile
Temporary shelter which can be easily dismantled and which is portable
seam can be waterproof. Rain resistance is measured and expressed as hydrostatic head in millimetres (mm). This indicates the pressure of water needed to
Tent
Uncontrolled release of crude oil and/or natural gas from a well
pressure than is being exerted by the hydrostatic head of the drilling mud (including the small additional frictional head while circulating) at the bit, an
Blowout_(well_drilling)
Oil well operation
control equipment at the surface. It works on the principle that the hydrostatic head of the kill fluid or kill mud will be enough to suppress the pressure
Well_kill
Propeller-type water turbine which has adjustable blades
turbine and gives up its energy. Power is recovered from both the hydrostatic head and from the kinetic energy of the flowing water. The design combines
Kaplan_turbine
Dam in South Canterbury, New Zealand
particular, there was no consideration of the pressure exerted by the hydrostatic head and impact of water entering cracks or joints in either the basement
Waitaki_Dam
Reservoir to store and stabilise fluid pressure
by steam pumps. When dock machinery required hydraulic power, the hydrostatic head of the water's height above ground provided the necessary pressure
Hydraulic_accumulator
Artificially irrigated meadow
it down the valley at a gentler slope than the river, producing a hydrostatic head between the two. Mains were often along the edge of the valley, each
Water-meadow
Controversial theory in terminal ballistics
Hydrostatic shock, also known as hydro-shock, is the controversial concept that a penetrating projectile (such as a bullet) can produce a pressure wave
Hydrostatic_shock
Textile that resists moisture penetration
1,000 millimetres of water (9.8 kPa) pressure without leaking (see hydrostatic head).[citation needed] These values should be taken with some caveats.
Waterproof_fabric
Carburetors are provided with a float chamber to provide a constant hydrostatic head of fuel above the carburettor's metering jets, thus a constant pressure
Float_chamber
pressure at the shoe of the 'B' annulus cannot exceed this. Given a hydrostatic head of 2116 psi, the pressure at the wellhead must not exceed 2634 psi
MAASP
Town and civil parish in North Yorkshire, England
and humus tanks were also upgraded from old manual sludging under hydrostatic head to circular tanks fitted with scrapers to desludge the tanks automatically
Boroughbridge
Electronic device
occurring within a floor void would therefore go unnoticed until the hydrostatic head of pressure meant that the water found its way through to floors below
Water_detector
Long metal pipe used in oil and gas wells
typical use for coiled tubing is circulation or deliquification. A hydrostatic head (a column of fluid in the well bore) may be inhibiting flow of formation
Coiled_tubing
Well drilled to extract crude oil and/or gas
the formation pressure at the depth of the bit is greater than the hydrostatic head of the mud above, which if not controlled temporarily by closing the
Oil_well
Electricity generated by hydropower
that are not mutually exclusive. For example, a low-head hydro power plant with hydrostatic head of few meters to few tens of meters can be classified
Hydroelectricity
2005 deadly refinery accident
over the top of the column into the overheads line. At 1:13 pm, the hydrostatic head of this liquid had built to over 42 psi (290 kPa). This was sufficient
Texas_City_refinery_explosion
Motor vehicle
is critically sensitive to the fuel pressure at the jet, i.e. the hydrostatic head owing to the depth of fuel between the jet and the float level. Any
Reece_Fish_Carburettor
Last operation for oil and gas wells
is fed into valves installed in mandrels in the tubing strip. The hydrostatic head is lowered and the fluid is gas lifted to the surface. Single-well
Completion (oil and gas wells)
Completion_(oil_and_gas_wells)
Structural basin that develops adjacent and parallel to a mountain belt
potentially can heat and mineralize materials, as well as mix with the local hydrostatic head. Orogen topography is the major driving force of fluid migration. The
Foreland_basin
Concept in hydrology
hydraulic head through an aquifer determines where groundwater will flow. In a hydrostatic example (first figure), where the hydraulic head is constant
Hydraulic_head
Office building in Boston, Massachusetts
(tension piles) and 24-inch (610 mm) pressure slab designed to resist a hydrostatic head of approximately 25 feet (7.6 m). The parking garage is made up of
500_Boylston_Street
Machinery for processing minerals
a level above that of the liquid level in the tank. This creates a hydrostatic head in the downcomer, meaning that the pressure inside the top of the downcomer
Jameson_cell
Branching networks of valleys on Mars
channels at chaos terrains as major aquifer breaches. However, the hydrostatic head supplied by this mechanism could not feed the numerous channels at
Valley_network_(Mars)
Irrigation scheme in Canterbury, New Zealand
hydro power station was constructed at Highbank to utilise the 104 m hydrostatic head available from the end point of the canal on the Rakaia river terrace
Rangitata_Diversion_Race
cannot be “an integral part of a dam”, cannot use a dam to supply its hydrostatic head, and cannot be located on Federal lands. The hydroelectric potential
Hydropower policy of the United States
Hydropower_policy_of_the_United_States
Type of hydraulic compression system failure
Hydrolock (a shorthand notation for hydrostatic lock or hydraulic lock) is an abnormal condition of any device which is designed to compress a gas by
Hydrolock
Pleistocene and/or Holocene fluvial channel deposits. The depth to water (hydrostatic head) averages 14 feet (4.3 m) below the surface, closely correlated with
Geology and hydrology of the Wichita Falls, Texas area
Geology_and_hydrology_of_the_Wichita_Falls,_Texas_area
Type of bearings which use pressurized liquid or gas between the bearing surfaces
dynamic bearings (also known as hydrodynamic bearings) and hydrostatic bearings. Hydrostatic bearings are externally pressurized fluid bearings, where
Fluid_bearing
Technique used in oil and gas operations to prevent influx of fluids into a wellbore
such as drilling, well workover and well completion for maintaining the hydrostatic pressure and formation pressure to prevent the influx of formation fluids
Well_control
Naturally-pressurized water source
the well-pipe would rise to a height corresponding to the point where hydrostatic equilibrium is reached. A well drilled into such an aquifer is called
Artesian_well
Principle relating to fluid dynamics
hydrostatic pressure p is defined as p = p 0 − ρ g z , {\displaystyle p=p_{0}-\rho gz,} with p0 some reference pressure, or when rearranged as head:
Bernoulli's_principle
Type of underwater electro-acoustic transducer
Transducers of this form also lend themselves to compensation against the hydrostatic pressures encountered in sonar, particularly for submarine applications
Tonpilz
Combination of a syphon pipe and a priming pump
then when it falls down again, the increased hydrostatic pressure within the pipe (which now has a higher head of fluid in it than the surrounding container)
Jiggle_syphon
Rimless, centerfire, bottlenecked rifle cartridge
respectively). Proponents of the hydrostatic shock theory contend that the .308 Winchester has sufficient energy to impart hydrostatic shock to living targets
.308_Winchester
Death of bone tissue due to interruption of the blood supply
necrosis of right humeral head. Woman of 81 years with diabetes of long evolution. Radiography of avascular necrosis of left femoral head. Man of 45 years with
Avascular_necrosis
Place in which a person bathes under a spray of water
contraption used the pump to force the water into a vessel above the user's head, and a chain would then be pulled to release the water from the vessel. Although
Shower
Equipment designed to help protect an individual from hazards
face shields and protective eyewear, surgical and isolation gowns, and head and foot coverings) or clothing, and the materials and components thereof
Personal_protective_equipment
Force distributed over an area
exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation p = ρgh, where g is the gravitational acceleration
Pressure
Actuator operated electrically
#771006, February 1977 Adams Robert Navarro, "Performance of an Electro-Hydrostatic Actuator on the F-18 Systems Research Aircraft" Archived 2023-06-01 at
Electro-hydraulic_actuator
Family of wasps
back halves of the head extending from the mandible to the top of the head, which is presumably expanded by muscle or hydrostatic pressure, likely to
Mymarommatidae
Physiological responses to immersion of air-breathing vertebrates
inhalation to overcome the hydrostatic pressure on the chest. Hydrostatic pressure on the surface of the body due to head-out immersion in water causes
Diving_reflex
Dwarf planet with a ring and two moons
until recently thought to be sufficient for it to have relaxed into hydrostatic equilibrium, though that is now unclear. Haumea's elongated shape, together
Haumea
2007 American film by Antoine Fuqua
In his interview, Garrity said "At 2 yards (1.8 m), because of the hydrostatic shock that follows a large-caliber, high-velocity round such as the
Shooter_(2007_film)
Thiazide-like diuretic drug
intravascular hydrostatic pressure and thereby lowering transcapillary pressure (see Starling Equation). Edema may be caused by either increased hydrostatic pressure
Chlortalidone
Type of natural water upwelling
where z w {\displaystyle z_{w}} is the depth below the water table, then hydrostatic conditions will prevail and the fluids will not be flowing through the
Seepage
Excess accumulation of fluid in the brain
and for decreasing cerebrospinal fluid hydrostatic pressure. The current recommendation is to elevate the head of the bed to 30 degrees to optimize cerebral
Cerebral_edema
its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) state. Object has cleared the neighbourhood
Definition_of_planet
Sensor to detect the level of substances that flow
{\displaystyle p(h)} = hydrostatic pressure The measuring minimum level starts from a complete covering of the measuring element near the head end of the level
Level_sensor
Third planet from the Sun
object with the highest density. Earth has a rounded shape, through hydrostatic equilibrium, with an equatorial diameter of 12,756 km (7,926 mi), making
Earth
Small opening that allows water to drain from within an assembly
wall, so water can escape from the retained earth, thus lessening the hydrostatic load on the wall and preventing damage to the wall from the excess water
Weep_(architecture)
depth of several kilometers. Hydrostatic gauges (such as the mercury column manometer) compare pressure to the hydrostatic force per unit area at the base
Pressure_measurement
Animals with embryonic bilateral symmetry
(sometimes called a "through gut"), and sometimes a wormlike body plan with a hydrostatic skeleton. Xenacoelomorphs, on the other hand, have a bag gut with one
Bilateria
Pistol cartridge
manageable recoil than the 10mm Auto cartridge. Marshall & Sanow (and other hydrostatic shock proponents) contend that with good jacketed hollow point bullets
.40_S&W
Discharge pressure (also called high side pressure or head pressure) is the pressure generated on the output side of a gas compressor in a refrigeration
Discharge_pressure
Genus of cnidarians
prey, the contents of the nematocyst are explosively discharged due to hydrostatic pressure (the osmotic pressure exceeds a critical threshold), firing
Hydra_(genus)
Container for storing water
Drinking water Fuel gas Friction loss Grade (slope) Greywater Heat trap Hydrostatic loop Leak Neutral axis Onsite sewage facility Pressure Sanitary sewer
Water_tank
Point at which the resultant force of a pressure field acts on a body
is located outside the body. Since the forces of water on a dam are hydrostatic forces, they vary linearly with depth. The total force on the dam is
Center of pressure (fluid mechanics)
Center_of_pressure_(fluid_mechanics)
Phylum of microscopic animals
backwards and forwards; there are also some flexors that work against hydrostatic pressure of the haemocoel. The claws help to stop the legs sliding during
Tardigrade
6 mi) in diameter, and that grows and persists in part as a result of hydrostatic pressure within and below the permafrost of Arctic and subarctic regions
Glossary of geography terms (N–Z)
Glossary_of_geography_terms_(N–Z)
Ability of a firearm or other weapon to cause immediate incapacitation
energy of the bullet and its effects on the nervous system, including hydrostatic shock and energy transfer, which is similar to kinetic energy deposit
Stopping_power
Genus of amphibians
for prey at wider angles, tomato frogs align both head and tongue towards it, utilizing a hydrostatic mechanism for tongue projection. This enables capturing
Tomato_frog
Italian physicist and astronomer (1564–1642)
science and technology, describing the properties of the pendulum and "hydrostatic balances". He was one of the earliest developers of the thermoscope and
Galileo_Galilei
Family of venomous sea snails
traveling inside the proboscis. The reason for this speed relies in hydrostatic pressure by the fluid inside the proboscis which propels the harpoon
Cone_snail
Form of matter
Here the hydrostatic pressure in the liquid has to take into account z, the distance from the top to the stem of the bubble. The new hydrostatic pressure
Foam
Aspect of anatomy
infection in the head and neck mainly spread by hydrostatic pressure. This is now accepted to be true for most infections in the head and neck, with the
Fascial spaces of the head and neck
Fascial_spaces_of_the_head_and_neck
Equations of motion for viscous fluids
present). The right side of the equation is in effect a summation of hydrostatic effects, the divergence of deviatoric stress and body forces (such as
Navier–Stokes_equations
Fluid accumulation in the tissue and air spaces of the lungs
forces and is visualized using the Starling equation. There are two hydrostatic pressures and two oncotic (protein) pressures that determine the fluid
Pulmonary_edema
Extinct genus of Cambrian animals
the center of each tentacle and connecting with the head is tentatively reconstructed as a hydrostatic canal and/or vascular system; if this interpretation
Herpetogaster
Lake under a glacier
above the ground threshold then the water must be trapped by a sort of hydrostatic seal—the ice surrounding the lake is pressed to the ground by its own
Subglacial_lake
Drinking water Fuel gas Friction loss Grade (slope) Greywater Heat trap Hydrostatic loop Leak Neutral axis Onsite sewage facility Pressure Sanitary sewer
List_of_tools_and_equipment
Self-propulsion of a person through water
human males find it more difficult to float or be buoyant. See also: Hydrostatic weighing. Since the human body is less dense than water, water can support
Swimming
Accumulation of excess fluid in the pleural cavity
space can impair inspiration by upsetting the functional vacuum and hydrostatically increasing the resistance against lung expansion, resulting in a fully
Pleural_effusion
Main body cavity in many animals
fauna[citation needed] ("coelom"). A coelom can absorb shock or provide a hydrostatic skeleton. It can also support an immune system in the form of coelomocytes
Coelom
Machine tool used to perform boring operations
as top class hydrostatic horizontal boring mill manufacturers worldwide. Milling Machine Lathe Machine Tool CNC Machining Hydrostatics "Collins Dictionary
Horizontal_boring_machine
Semi-submersible offshore drilling rig
April 2002, a 44-year-old Norwegian worker on the rig was struck on the head and killed in an industrial accident. The accident resulted in Byford Dolphin
Byford_Dolphin
Specialized firearm used underwater
or latch that prevents firing when it is engaged. The rear of the power head is fitted with some provision for attaching to a spear. Powerheads are available
Powerhead_(firearm)
Volgograd monumental sculpture
1963. The statue, made entirely of reinforced concrete, used a special hydrostatic cement mixture that had been developed for the construction of the Ostankino
The_Motherland_Calls
1850s and 1860s engineering project in Chicago
Press and Tribune. April 30, 1860. p. 1. Retrieved April 4, 2026. "The Hydrostatic Power Applied to Raising Buildings". Cedar Falls Gazette. May 11, 1860
Raising_of_Chicago
Family of molluscs
This limits nautiluses in that they cannot operate under the extreme hydrostatic pressures found at depths greater than approximately 800 metres (2,600 ft)
Nautilus
1994 multi-role combat aircraft family by Eurofighter
protection up to nine g. German and Austrian Air Force pilots wear a hydrostatic g-suit called Libelle (dragonfly) Multi G Plus instead, which also provides
Eurofighter_Typhoon
ac-, af-, ag-, al-, am-, an-, ap-, ar-, as-, at-" are collated under the head item (first item listed), which is sometimes followed by alternative roots
List of Greek and Latin roots in English/P–Z
List_of_Greek_and_Latin_roots_in_English/P–Z
Vessel for pressurised gases or liquids
radiography, and pressure tests. Hydrostatic pressure tests usually use water, but pneumatic tests use air or another gas. Hydrostatic testing is preferred, because
Pressure_vessel
Phylum of invertebrate animals
prey, apparently moved in one direction by musculature and the other by hydrostatic pressure. The claws are made of sclerotised α-chitin, reinforced with
Onychophora
Distant body in the outer Solar System
the largest non-planets (despite the name) that, like planets, are in hydrostatic equilibrium and thus can display planet-like geological activity, yet
Sedna_(dwarf_planet)
American stealth multirole fighter aircraft
filler, and better drainage. The flight control system uses electro-hydrostatic actuators rather than traditional hydraulic systems; these controls can
Lockheed Martin F-35 Lightning II
Lockheed_Martin_F-35_Lightning_II
British ocean liner (1907–1915)
torpedo on 7 May 1915 at 14:10, 11 nautical miles (20 km; 13 mi) off the Old Head of Kinsale, Ireland, leading to her sinking about 18 minutes later. Only
RMS_Lusitania
Theorem in fluid mechanics
the level of B and connected to a second vertical tube BC. Due to the hydrostatic principle of communicating vessels the water lifts up to the same filling
Torricelli's_law
Thermodynamic process that uses energy sources to heat water
limited periods. Water is heated in a pressure vessel that can withstand a hydrostatic pressure close to that of the incoming mains supply. A pressure reducing
Water_heating
Sensory system that facilitates body balance
Crabs: Short-Term Control of Locomotion and Long-Term Monitoring of Hydrostatic Pressure". The Biological Bulletin. 200 (2): 155–159. doi:10.2307/1543309
Vestibular_system
Greek mathematician and physicist (c. 287 – 212 BC)
first to apply mathematics to physical phenomena, working on statics and hydrostatics. Archimedes' achievements in this area include a proof of the law of
Archimedes
Species of annelid worm
posterior section. Head end dark brown to reddish brown lateral, dorsal pigmentation fading towards the back. The worm has a hydrostatic skeleton and moves
Lumbricus_terrestris
Ratio of two densities
Boot, with vacuum jacket and thermometer, capacity 5, 10, 25 and 50 mL Hydrostatic Pressure-based Instruments: This technology relies upon Pascal's Principle
Relative_density
Formation of vapour bubbles in bodily fluids due to reduced environmental pressure
vapourisation of water and outgassing of nitrogen. Factors include temperature, hydrostatic pressure, tissue elasticity, solute concentration, and the presence of
Ebullism
Biological kingdom
muscles, that shorten the body; these enable soft-bodied animals with a hydrostatic skeleton to move by peristalsis. They also have a gut that extends through
Animal
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