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SAE AIR1168/1

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Soveltamisala

The fluid flow treated in this section is isothermal, subsonic, and incompressible. The effects of heat addition, work on the fluid, variation in sonic velocity, and changes in elevation are neglected. An incompressible fluid is one in which a change in pressure causes no resulting change in fluid density. The assumption that liquids are incompressible introduces no appreciable error in calculations, but the assumption that a gas is incompressible introduces an error of a magnitude that is dependent on the fluid velocity and on the loss coefficient of the particular duct section or piece of equipment. Fig. 1A-1 shows the error in pressure drop resulting from assuming that air is incompressible. With reasonably small loss coefficients and the accuracy that is usually required in most calculations, compressible fluids may be treated as incompressible for velocities less than Mach 0.2. At higher velocities and for large loss coefficients ( K t and 4 fL / D ), compressible flow analysis should be used.

Julkaisun tiedot

  • Standardi julkaisijalta SAE International
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  • Julkaisutyyppi: IS
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  • Publisher SAE International
  • Distributor SAE International

Sidokset

  • Enums.Sd.Shared.Models.ProductRelationType.REFERRED_BY: SAE AIR5661A
  • Enums.Sd.Shared.Models.ProductRelationType.REFERRED_BY: SAE AIR744D
  • On korvattu: SAE AIR1168/1A
  • Enums.Sd.Shared.Models.ProductRelationType.REFERRED_BY: SAE AIR744C
  • Enums.Sd.Shared.Models.ProductRelationType.REFERRED_BY: SAE AIR5661
  • Enums.Sd.Shared.Models.ProductRelationType.REFERRED_BY: SAE AIR744B