Accession Number:

AD0716505

Title:

Theory of the Staggered Diffuser,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1970-10-14

Pagination or Media Count:

27.0

Abstract:

In order to check the flow of a liquid or gas moving at subsonic velocity, diffusers with constantly increasing in the direction of the output cross-sections are usually employed. Most frequently, diffusers are of conical design with opening angle of 8-10 degrees. In such devices pressure drop is mainly due to friction with the walls. In certain cases, however, the use of a diffuser of this design is impossible for one reason or another, and retardation of the flow must be achieved by a sudden increase in cross-sectional area. In such cases the jet is diverted from the walls and from the butt end of the channel which joins the tube, and in this way a stagnant region appears. Flow in such diffusers is characterized by intensive eddies, which result from great pressure drops. The paper is devoted to a type of staggered diffuser in which the flow encounters several sudden increases in cross-section. Author

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE