Flow Through A Rectangular Slot

(1) For the flow through rectangular microchannels with constant pressure gradient, the axial velocity increases faster in the center of the cross-section than in other areas as the slip length increases, while for the flows, due to the waveform pressure gradient, the velocity changes significantly as the slip length increases. I have a rectangular duct measuring 80' x 40', containing a 1/4' thick orifice plate with a rectangular opening size of 70' x 28'. I have air flowing at 100,000 CFM through the duct at 40' W.C. Static pressure. I am trying to calculate the pressure drop across this orifice. The only equations I can find are for circular orifices in a circular pipe. CFX CFD Laminar Flow Through Rectangular Duct IN ANSYS.

Flow through gate openings has been the subject of study by many investigators. Gates are often located on raised crests, as in the case of spillways. In such a situation, the flow is expected to behave similarly to flow through rectangular slots. As flow through a rectangular slot is a particular case of flow through a large orifice, any understanding of it will help in its generalization. Furthermore, because the flow through a slot is intermediate to that of a sluice gate and a rectangular sharp-crested weir, it can be used as a basis of unification. In this study, a discharge equation for flow through rectangular slots has been obtained. In special cases, this equation converts to the discharge equations of a sluice gate and a rectangular sharp-crested weir.

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
Corporate Authors: 345 East 47th Street
New York, NY United States 10017-2398
Authors:
- Swamee, P K
- Ojha, CSP
- Kumar, S
Publication Date: 1998-9

Language

English

Media Info

Features: Appendices; Figures; References; Tables;
Pagination: p. 973-974
Serial:
- Volume: 124
- Issue Number: 9
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9429
- Serial URL: http://scitation.aip.org/hyo/

Subject/Index Terms

TRT Terms: Equations; Flow; Gates; Hydrologic phenomena; Openings; Rectangles; Spillways; Weirs
Old TRIS Terms: Rectangular bodies
Subject Areas: Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;

Filing Info

Viscous Flow Through Rectangular Slot

Accession Number: 00754623
Record Type: Publication
Files: TRIS
Created Date: Oct 12 1998 12:00AM

Air Flow Through Rectangular Slot

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
Corporate Authors: 345 East 47th Street
New York, NY United States 10017-2398
Authors:
- Swamee, P K
- Ojha, CSP
- Kumar, S
Publication Date: 1998-9