- turbulent drag
- сопротивление при турбулентном обтекании
Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. edited by M. Murashkevich. 1974.
turbulent drag
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Turbulent jet breakup — is the phenomena of the disintegration of a liquid/gas jet due to turbulent forces acting either on the surface of the jet or present within the jet itself. Turbulent jet breakup is mainly caused by an interplay of aerodynamic forces (eg drag… … Wikipedia
Drag coefficient — In fluid dynamics, the drag coefficient (commonly denoted as: cd, cx or cw) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water. It is used in the drag equation,… … Wikipedia
Drag (physics) — Shape and flow Form drag Skin friction 0% 100% 10% 90% … Wikipedia
Drag reducing agent — A drag reducing agent, also called a flow improver, is a long chain polymer chemical that is used in crude oil, refined products or non potable water pipelines. It is injected in small amounts (parts per million) and is used to reduce the… … Wikipedia
Drag crisis — In fluid dynamics, drag crisis is a phenomenon in which drag coefficient drops off suddenly as Reynolds number increases. This has been well studied for round bodies like spheres and cylinders. The drag coefficient of a sphere will change rapidly … Wikipedia
turbulent flow — noun flow in which the velocity at any point varies erratically • Hypernyms: ↑flow • Hyponyms: ↑sea * * * noun : a fluid flow in which the velocity at a given point varies erratically in magnitude and direction with time and is thus essentially… … Useful english dictionary
Drag reducer — A drag reducing agent is a long chain polymer chemical that is used in oil pipelines. It is injected in small amounts and is used to reduce the frictional pressure drop along the pipeline s lenght. The benefits of using a drag reducer are the… … Wikipedia
Polymer turbulence drag reduction — In 1948 Toms discovered by experiments that the addition of a small amount of polymer into a turbulent Newtonian solvent (parts per million by weight), whichresults in a Non Newtonian fluid solution, can reduce the skin fictional drag on a… … Wikipedia
Parasitic drag — (also called parasite drag) is drag caused by moving a solid object through a fluid. Parasitic drag is made up of many components, the most prominent being form drag. Skin friction and interference drag are also major components of parasitic drag … Wikipedia
Free-fall — is motion with no acceleration other than that provided by gravity. Since this definition does not specify velocity, it also applies to objects initially moving upward. Although the definition specifically excludes all other forces such as… … Wikipedia
Transition point — In the field of fluid dynamics the point at which the boundary layer changes from laminar to turbulent is called the transition point. Where the boundary layer becomes turbulent, drag due to skin friction is relatively high. As speed increases,… … Wikipedia
