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Topics referred to by the same term
Air velocity may refer to: Wind speed, the speed of the air currents Airspeed, the speed of an aircraft relative to the air. Airspeed (disambiguation)
Air_velocity
Highest velocity attainable by a falling object
Terminal velocity is the maximum speed attainable by an object as it falls through a fluid (air is the most common example). It is reached when the sum
Terminal_velocity
Tool used on products on conveyor belts
The exit air velocity then creates an impact air velocity onto the surface of whatever object the air is directed. This impact air velocity can range
Air_knife
American homebuilt aircraft
The Velocity is a canard pusher aircraft produced as a kit by Velocity Aircraft. The prototype Velocity, first flown in July 1985, was a four-seat composite
Velocity_Velocity
Movement of air
fluid, air may exhibit both laminar and turbulent flow patterns. Laminar flow occurs when air can flow smoothly, and exhibits a parabolic velocity profile;
Airflow
Turbulent movement of transparent air masses
hence air density variations, where air velocity changes. An example: the speed of the jet stream is not constant along its length; additionally air temperature
Clear-air_turbulence
Internal combustion engine sensor
on air temperature), air velocity and the shape of the vane, see drag equation. Some VAF sensors include an additional intake air temperature sensor (IAT
Mass_flow_sensor
Speed and direction of a motion
Velocity is a measurement of speed in a certain direction of motion. It is a fundamental concept in kinematics, the branch of classical mechanics that
Velocity
Imperial unit of volumetric flow rate
centrifugal fan will pump a constant volume of air rather than a constant mass. This means that the air velocity in a system is fixed even though mass flow
Actual_cubic_feet_per_minute
Professional wrestling television program
to June 11, 2006. It aired domestically Saturday nights on TNN/Spike TV until moving to streaming on WWE.com in 2005. Velocity served as a supplementary
WWE_Velocity
Mechanical fan that forces fluid to move radially outward
of air rather than a constant mass. This means that at a constant fan speed the air velocity and volume in a system is static, but the mass of air flowing
Centrifugal_fan
Vehicle air intake design
ram-air intake works by reducing the intake air velocity by increasing the cross-sectional area of the intake ducting.[citation needed] When gas velocity
Ram-air_intake
Measure of electromagnetic transmission
and so the velocity factor of a radio wave in vacuum is 1.0 (unity). In air, the velocity factor is ~0.9997. In electrical cables, the velocity factor mainly
Velocity_factor
Passive heat exchanger that transfers heat
area in contact with the cooling medium surrounding it, such as the air. Air velocity, choice of material, protrusion design and surface treatment are factors
Heat_sink
Pseudovector field describing the local rotation of a continuum near some point
airspeed, and air density. The relative vorticity is the vorticity relative to the Earth induced by the air velocity field. This air velocity field is often
Vorticity
Velocity of projectile the moment it leaves the gun barrel
bullet's muzzle velocity. For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance
Muzzle_velocity
Supersonic atmospheric jet engine
its own compressed air (i.e. ram air in a ramjet) in order to generate thrust. The diffuser converts the high velocity of the air approaching the intake
Ramjet
Temperature for heat exchange
{(t_{mr}+(t_{a}\times {\sqrt {10v}}))}{1+{\sqrt {10v}}}}} where, v {\displaystyle v} = air velocity t a {\displaystyle t_{a}} and t m r {\displaystyle t_{mr}} have the same
Operative_temperature
under high angle of attack (i.e., low blade speed / air speed ratio), which occurs during the air velocity maxima of the oscillating flow. A high angle of
Wells_turbine
Device for testing internal aerodynamics of engine parts
through a dynamometer. Air flow meter Fundamentals of Fluid Mechanics 4th Ed Munson Young -Wiley P514-515 Dwyer Air Velocity Instruments manual Free
Air_flow_bench
HVAC feature
the air velocity entering the bellmouth is low (to reduce noise, turbulence and pressure drop), and gradually increases to the normal design velocity of
Bell_mouth
Type of temperature
smaller the diameter of the globe, the greater the effect of the air temperature and air velocity, thus causing a reduction in the accuracy of the measurement
Mean_radiant_temperature
Device that cools air through the evaporation of water
needed] type of evaporative media offer efficiencies of >90% depending on air velocity. The CELdek media is more often used in large commercial and industrial
Evaporative_cooler
Ventilation grill with moving parts
noise, such as those in restaurants, allow higher air velocities.) On the other hand, air velocity must be high enough to achieve the desired temperature
Register_(air_and_heating)
Change in velocity per amount of fuel
increases the effective exhaust velocity while reducing the actual exhaust velocity. Again, this is because the mass of the air is not counted in the specific
Specific_impulse
Rate at which air moves from high- to low-pressure areas
velocity includes a GPS combined with pitot tube.[citation needed] A fluid flow velocity tool, the Pitot tube is primarily used to determine the air velocity
Wind_speed
Techniques for preserving fish
are dried under controlled conditions of temperature, humidity, and air velocity. Since the dried product is relatively unappetizing and rehydrating slow
Fish_preservation
Device used to prevent air from moving from one open space to another
unconditioned air into a conditioned space by forcing an air stream over the entire entrance. The air stream layer moves with a velocity and angle such
Air_door
Engine fuel system device
A velocity stack, trumpet, or air horn is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's
Velocity_stack
Tones generated by wind passing through or over objects
{\frac {{\mbox{St}}\cdot V}{D}}} , where V {\displaystyle V} is the air velocity, D {\displaystyle D} is the diameter of the cylinder, and St {\displaystyle
Aeolian_sound
1953 twin-engined, five-seat, channel wing, pusher configuration aircraft
enhanced higher air velocity. This latter may be the result of the movement of the aircraft through the air or, when lift at low air speeds is important
Custer_CCW-5
Device which measures fluid flow velocity, typically around an aircraft or boat
the airspeed of aircraft; the water speed of boats; and the flow velocity of liquids, air, and gases in industry. The basic pitot tube consists of a tube
Pitot_tube
Vector operator in vector calculus
As an example, consider air as it is heated or cooled. The velocity of the air at each point defines a vector field. While air is heated in a region, it
Divergence
Deflection of a spinning object moving through a fluid
object cause the air to be carried around the object. This adds to the air velocity on one side of the object and decreases the velocity on the other side
Magnus_effect
Type of airlift
parachute will slow the load, though not to the extent of a low-velocity airdrop. High-velocity airdrops are used for durable items like military ready-to-eat
Airdrop
Rate of travel of electric energy
refer to the velocity of an electron in various circumstances, the average velocity of multiple electrons in a conductor, or the velocity of electrical
Speed_of_electricity
{\displaystyle U} = blade peripheral velocity V 1 {\displaystyle V_{1}} and V 2 {\displaystyle V_{2}} are absolute air velocity at the rotor inlet and outlet
Compressor_characteristic
Speed of sound wave through elastic medium
ideal gas approximation of sound velocity for gases, which is accurate at relatively low gas pressures and densities (for air, this includes standard Earth
Speed_of_sound
Reaction force
incoming air velocity, v d {\displaystyle v_{d}} is the velocity at the actuator disc, and v f {\displaystyle v_{f}} is the final exit velocity: d m d t
Thrust
.22 caliber rimfire cartridge used in rifles, pistols, revolvers, and submachine guns
Because the speed of sound in air at 68 °F (20 °C) is about 1,115 ft/s (340 m/s), the subsonic round's muzzle velocity is slightly below the speed of
.22_long_rifle
wind, owing to higher leeward velocities of the air over both sails. The two sails cause an overall larger displacement of air perpendicular to the direction
Forces_on_sails
Force perpendicular to flow of surrounding fluid
the surface has near-zero velocity but the air away from the surface is moving, there is a thin boundary layer in which air close to the surface is subjected
Lift_(force)
Device that measures how much air is flowing through a tube
"Calculating CFM or Velocity Across a Coil or in Ductwork". MEPAcademy. Retrieved January 27, 2024. Miata.net, Repair broken Air Flow Meter, by Zach Warner
Air_flow_meter
Meteorological phenomenon
activity of thunderstorms driven by solar heating, which effectively draw air in; these are the trade winds. The ITCZ is effectively a tracer of the ascending
Intertropical Convergence Zone
Intertropical_Convergence_Zone
Retarding force on a body moving in a fluid
decrease fluid velocity relative to the solid object in the fluid's path. Unlike other resistive forces, drag force depends on velocity. Drag force is
Drag_(physics)
Method of reusing thermal energy in a building
the fresh air introduced into the air conditioning system is preheated (or pre-cooled) before it enters the room, or the air cooler of the air conditioning
Heat_recovery_ventilation
Topics referred to by the same term
Vertical velocity can refer to: The Flash: Vertical Velocity (Six Flags Great Adventure), a roller coaster set to open in 2025 at Six Flags Great Adventure
Vertical_velocity
Fabric or other surface supported by a mast to allow wind propulsion
Apparent wind is the air velocity experienced on the moving craft and is the combined effect of the true wind velocity and the velocity of the sailing craft
Sail
Type of laboratory equipment
fact, the inward flow of air can contribute to contamination of samples. Inward airflow is maintained either at a minimum velocity of 75 ft/min(0.38 m/s)
Biosafety_cabinet
Motion of launched objects due to gravity
idealized model, the object follows a parabolic path determined by its initial velocity and the constant acceleration due to gravity. The motion can be decomposed
Projectile_motion
Streamlined body for generating lift
deflection of air by an airfoil generates a lower-pressure region above and behind itself. This pressure difference is accompanied by a velocity difference
Airfoil
Aircraft engine that produces thrust by emitting a jet of gas
extinguished. The range of air-fuel ratio between the rich and weak limits is reduced with an increase of air velocity. If the increasing air mass flow reduces
Jet_engine
Velocity of a particle in a medium as it transmits a wave
When applied to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed of a parcel of fluid as it moves back
Particle_velocity
American amateur-built aircraft
The Velocity XL (XL: Extra Large) is an American amateur-built aircraft, produced by Velocity, Inc. It is an enlarged version of their Velocity SE canard
Velocity_XL
Magnitude of velocity
duration of the time interval approaches zero. Speed is the magnitude of velocity (a vector), which indicates additionally the direction of motion. Speed
Speed
and regulations may vary for weapons of different bore, muzzle energy or velocity, or material of ammunition, with guns designed to fire metal pellets often
Air_gun_laws
Compressible flow velocity limiting effect
effect. The parameter that becomes "choked" or "limited" is the fluid velocity. Choked flow is a fluid dynamic condition associated with the Venturi effect
Choked_flow
Characteristic of explosions
Explosive velocity, also known as detonation velocity or velocity of detonation (VoD), is the velocity at which the shock wave front travels through a
Detonation_velocity
Filtration efficacy measurement
filter at half its rated air velocity (for smoke particles), and a MERV 14 may function like a MERV 12 at double its rated velocity. This is because smoke-sized
Clean_air_delivery_rate
Engine family by Ford Motor Company
electronic Charge Motion Control Valve (CMCV) system that provides increased air velocity at low engine speeds for improved emissions and low-rpm torque. Cylinder
Ford_Modular_engine
Reduction of the moisture content of wood prior to its use
The external drying conditions (temperature, relative humidity and air velocity) control the external boundary conditions for drying, and hence the drying
Wood_drying
Aircraft propulsion system efficient at a range of speeds higher and lower than sound's
Turbofan exhaust gases send air into the ejector via an auxiliary air intake, thereby reducing the specific thrust/mean jet velocity of the final exhaust. The
Variable_cycle_engine
Furnace for clay products
kiln/track cars for loading the kiln. Modern high-temperature, high-air-velocity conventional kilns can typically dry 25-millimetre-thick (1 in) green
Kiln
Sports compact car produced by Mitsubishi Motors (1990–2012)
head was more on the side of high air volume, while the 1995-1999 cylinder head was more on the side of high air velocity. Mitsubishi Motors quietly updated
Mitsubishi_Eclipse
British man-portable/vehicle mounted surface-to-air missile
Starstreak HVM (High Velocity Missile). After launch, the missile accelerates to more than Mach 4, making it the fastest short-range surface-to-air missile in existence
Starstreak
Type of local ventilation device
booth Vented balance safety enclosure Face velocity is the "velocity of air at the face of an air diffuser or air terminal unit." "Some individuals have been
Fume_hood
Layer of fluid in the immediate vicinity of a bounding surface
consisting of fluid whose velocity has not yet returned to the bulk flow velocity is called the velocity boundary layer. The air next to a human is heated
Boundary_layer
Sensor responding to speed of movement
A velocity receiver (also known as a velocity sensor) is a type of sensor that responds to the speed of movement, rather than absolute position. These
Velocity_receiver
Device that uses compressed air to fire projectiles
These air rifles were charged using a pump to fill an air reservoir and produced velocities from 650 to 1,000 ft/s (200 to 300 m/s). They were also
Air_gun
Nature-inspired design
airflow can be imitated through mild changes in temperature, humidity, and air velocity. Naturalistic Shapes: Natural shapes and forms can be achieved in architectural
Biophilic_design
Species of flowering plant
plant and creates a cross flow fan action that generates sufficient air velocity to hold and gather the seeds into the seed bunker. Deadheading will encourage
Centaurea_cyanus
Technique for detecting leaks
smoke from the tube slowly to ensure the velocity of the smoke from the tube does not overpower the air velocity. If the room is at negative pressure, the
Smoke_testing_(mechanical)
Dimensionless quantity in fluid dynamic
medium, which in air varies with the square root of the thermodynamic temperature. By definition, at Mach 1, the local flow velocity u is equal to the
Mach_number
Physical structure for guiding sound waves
coefficients, material constants of insulation material, the influence of air velocity on wavelength (Mach number), etc. This approach also circumvents impractical
Acoustic_waveguide
Device that converts sound into an electrical signal
particle-velocity air pressure changes that constitute sound waves can pass through with minimal attenuation, but higher particle-velocity wind is impeded
Microphone
Air movement to, within, and from indoor spaces
cool supply air, typically around 55 °F (13 °C) (saturated) at design conditions, exits an outlet at high velocity. The high-velocity supply air stream causes
Room_air_distribution
Specialized facility designed for firearms practice
downrange flow and desired velocities at the firing line. The exhaust system should be designed to provide minimum duct air velocities of 12.70 – 15.24 m/s
Shooting_range
Device to generate electricity from wind
ground. Calculation of wind power density includes the effect of wind velocity and air density. Wind turbines are classified by the wind speed they are designed
Wind_turbine
Physical description of a gas turbine type jet engine thrust
of an air breathing jet engine, and thrust is independent of velocity. If the velocity of the jet from a jet engine is equal to sonic velocity, the jet
Gas_turbine_engine_thrust
Engine component
increase of air pressure and density, creating a constant axial velocity. In axial compressors, there may be up to 20 stages between the air inlet and compressor
Gas turbine engine compressors
Gas_turbine_engine_compressors
Device used for heating buildings
running at the highest speed, and always pumping out the hottest air at the highest velocity. One of the benefits to a single-stage furnace is typically the
Furnace_(central_heating)
Device which rejects waste heat to the atmosphere through the cooling of a water stream
more fans at the air inlet, which push air through the tower. Forced-draft arrangements normally have relatively high air velocity at the inlet and lower
Cooling_tower
Form of shear stress
Shear velocity, also called friction velocity, is a form by which a shear stress may be re-written in units of velocity. It is useful as a method in fluid
Shear_velocity
Type of motorcycle
RC30 had used 38 mm constant velocity carburettors which, for road use are quite nice, maintaining a high air velocity across a wide rpm range, though
Honda_RVF750_RC45
Reciprocating internal combustion engine
runner diameter is reduced from 50 to 45 mm (2.0 to 1.8 in) to increase air velocity and low end torque) in particular the RB25DE NEO which had two inlets
Nissan_RB_engine
Gun designed to generate very high speed
range facilities at Arnold Air Force Base is the measurement of released kinetic energy upon projectile impact. The muzzle velocity of an airgun, firearm,
Light-gas_gun
Industrial machine
system, properly sized and manifolded to maintain a consistent minimum air velocity required to keep the dust in suspension for conveyance to the collection
Dust_collector
Mathematical description of a body in free fall
air resistance, which has a dramatic effect on objects falling an appreciable distance in air, causing them to quickly approach a terminal velocity.
Equations_for_a_falling_body
Direction of travel under sail relative to true wind direction over surface
(VT) combines with the sailing craft's velocity (VB) to be the apparent wind velocity (VA); the air velocity experienced by instrumentation or crew on
Point_of_sail
Field lines in a fluid flow
changes with time, that is, when the flow is not steady. Considering a velocity vector field in three-dimensional space in the framework of continuum mechanics:
Streamlines, streaklines, and pathlines
Streamlines,_streaklines,_and_pathlines
Cloud of debris and smoke from a large explosion
increased air velocity) causes a reduction in air pressure, as given by Bernoulli's Law. This reduction in air pressure causes cooling, and when the air cools
Mushroom_cloud
Air gun that uses metallic ball projectiles called BBs
A BB gun is a type of air gun that fires metallic spherical projectiles called BBs (not to be confused with similar-looking bearing balls), which are
BB_gun
\mathrm {d} V} where u and v are the zonal and meridional components of air velocity. Eddy kinetic energy K' is approximated as: K ′ = ∫ A ρ 0 u ′ 2 ¯ + v
Lorenz_energy_cycle
Direct injection system for diesel engines
low velocity of the fuel vaporising from the combustion chamber walls, the air velocity has to be great to achieve a high relative air-fuel velocity to
M-System
Thermodynamic device
Often to cause the air jet(s) to attach to a ceiling or other surface, taking advantage of the Coandă effect To create low-velocity air movement in the occupied
Diffuser_(thermodynamics)
Machine used for studying the effects of air moving around objects
color. Particle Image Velocimetry (PIV) and laser Doppler velocimetry: air velocity is measured with lasers. Model Deformation Measurement (MDM): measures
Wind_tunnel
Mathematical process by William Froude
per unit time. The velocity of the element with respect to the air Vr is then the resultant of the forward and tangential velocities, as shown in Fig.
Blade_element_theory
Six-holed woodwind instrument
whistle's second and higher registers are achieved by increasing the air velocity into the ducted flue windway. On a transverse flute this is generally
Tin_whistle
Variable
filters. The result is expressed in units of velocity. v = V / Δ t A {\displaystyle v={V/\Delta t \over {A}}} The air-to-cloth ratio is typically between 1.5
Air-to-cloth_ratio
Gas molar flow rate
volume, though not mass, at any other air density. This means that the air velocity in a system is the same even though mass flow rate through the fan is
Standard cubic feet per minute
Standard_cubic_feet_per_minute
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