FLOW CHARACTERISTICS OF ELLIPTICAL ORIFICE PLATES
| Autor: | M. Athar M.Ish, Mohd Amir Khan, Mujib Ahmad Ansari |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Fluid Flow and Transfer Processes
Environmental Engineering Vena contracta business.industry Water flow Flow (psychology) Orifice plate Geometry Discharge coefficient Optics Position (vector) Area ratio business Geology Water Science and Technology Civil and Structural Engineering Dimensionless quantity |
| Zdroj: | ISH Journal of Hydraulic Engineering. 9:22-35 |
| ISSN: | 2164-3040 0971-5010 |
| DOI: | 10.1080/09715010.2003.10514731 |
| Popis: | This paper presents the results of the experimental investigation concerning the clear water flow through elliptical orifice plates in a circular pipe. Experiments were conducted in a pipe line having diameter of 38.1 mm and using elliptical orifice plates with orifice area to pipe area a/A = 0.20, 0.33, 0.50, 0.66 and 0.84. For a comparative study, five circular orifice plates with same a/A ratios were also tested simultaneously. The data collected in the present study alongwith the data collected from literature have been analysed to study the position of vena contracta, and variation of discharge coefficient Cd with relevant flow and geometric parameters. The dimensionless pressure distribution curves were analysed to locate the position of vena contracta with area ratio. The position of vena contracta is a function of area ratio. As area ratio increases, the location of the vena contracta shifts towards the orifice plate. Similarly, the position of vena contracta Lv/D is a function of ellipti... |
| Databáze: | OpenAIRE |
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