Hydraulics is a topic in engineering dealing with the mechanical properties of liquids.
Hydraulic may also refer to:
Business London Hydraulic Power Company, a London, England power company, closed in 1977
Engineering Hydraulic circuit, a system comprising an interconnected set of discrete components that transport liquid Hydraulic diameter, a commonly used term when handling flow in non-circular tubes and channels Hydraulic engineering, a sub-discipline of civil engineering, concerned with the flow and conveyance of fluids, principally water and sewage Hydraulic fracturing, a well-stimulation technique in which rock is fractured by a pressurized liquid Hydraulic fracturing by country Hydraulic intensifier, a hydraulic machine for transforming hydraulic power at low pressure into a reduced volume at higher pressure Hydraulic jump, a phenomenon frequently observed in rivers and spillways, when liquid at high velocity discharges into a zone of lower velocity, and a rather abrupt rise occurs in the liquid surface Hydraulic mining, a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment Hydraulic power (disambiguation) Hydraulic power network, a system of interconnected pipes carrying pressurized liquid used to transmit mechanical power from a power source, like a pump, to hydraulic equipment like lifts or motors Hydraulic resistance (disambiguation) Hydraulic transmission (disambiguation) Hydropower, hydraulic energy
Equipment Breaker (hydraulic), a powerful percussion hammer fitted to an excavator for demolishing concrete structures or rocks Electro-hydraulic systems, used for power steering Hydraulic accumulator, a pressure storage reservoir in which a non-compressible hydraulic fluid is held under pressure by an external source Hydraulic brake, an arrangement of braking mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling mechanism to the braking mechanism Hydraulic cement, cement distinguished by its reactivity with water, versus carbon dioxide Hydraulic cylinder, (also called a linear hydraulic motor), a mechanical actuator that is used to give a unidirectional force through a unidirectional stroke Hydraulic debarker, a machine removing bark from wooden logs by the use of water under pressure Hydraulic drive system, a drive or transmission system that uses pressurized hydraulic fluid to power hydraulic machinery Hydraulic fill, an embankment or other fill in which the materials are deposited in place by a flowing stream of water Hydraulic fluid, the medium by which power is transferred in hydraulic machinery Hydraulic head, or piezometric head, a specific measurement of liquid pressure above a geodetic datum Hydraulic lift, a type of hydraulic machinery or a form of hydraulic redistribution, a plant root phenomenon Hydraulic lime, a general term for varieties of lime (calcium oxide), or slaked lime (calcium hydroxide), used to make lime mortar which set through hydration: thus they are called hydraulic Hydraulic machinery, machinery and tools that use liquid fluid power to do simple work. Heavy equipment is a common example Hydraulic manifold, a manifold that regulates fluid flow between pumps and actuators and other components in a hydraulic system Hydraulic motor, a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement (rotation) Hydraulic press, a device (see machine press) using a hydraulic cylinder to generate a compressive force Hydraulic pressure switch, a pressure switch with applications in automobiles Hydraulic ram, a cyclic water pump powered by hydropower Hydraulic rescue tools, used by emergency rescue personnel to assist vehicle extrication of crash victims, as well as other rescues from small spaces Hydraulic seal, a relatively soft, non-metallic ring, captured in a groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications Hydraulic structure, a structure submerged or partially submerged in any body of water, which disrupts the natural flow of water Hydraulic tappet, a device for maintaining zero valve clearance in an internal combustion engine Hydraulic telegraph, either of two different hydraulic-telegraph telecommunication systems
Places Hydraulic, Virginia, an unincorporated community in Albemarle County, Virginia Hydraulic, a locality in the Cariboo Land District of British Columbia
Politics Hydraulic empire, a political structure which maintains power through exclusive control over access to water
Arts and media Hydraulic (Transformers), a fictional character, member of the Micromasters
Science Hydraulic analogy, the most widely used analogy for "electron fluid" in a metal conductor Hydraulic action, erosion that occurs when the motion of water against a rock surface produces mechanical weathering Hydraulic conductivity, a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures Hydraulic lift, a type of hydraulic machinery or a form of hydraulic redistribution, a plant root phenomenon Hydraulic redistribution, a plant root phenomenon Hydraulic retention time, a measure of the average length of time that a compound (ex. water) remains in a storage unit (ex. lake, pond, ocean)
Vehicles Hydraulic hybrid, a vehicle that uses a pressurized fluid power source, along with a conventional internal combustion engine , a US Navy patrol vessel
Biology
Hydraulic model of aggression, described by Konrad Lorenz in his 1963 book On Aggression