Affiliation:
1. Mechnical Engineering Department, NIST Institute of Science and Technology, Berhampur, Odisha, PIN- 761008, INDIA
Abstract
The orifice flow measurement produces errors due to highly turbulent and backflow in downstream which have to be overcome. Determine the Δp, and coefficient of discharge (Cd) for flow through the orifice CFD analysis. The input parameters vary with the variance of Reynolds number (Re), fluids with the deviation of density and viscosity, area ratio (σ). The range of Re (20000- 100000), σ (0.2- 0.6), density (ρr), and viscosity (µr) ratio vary as per the fluids considered. The various incompressible and compressible fluids are considered for the study of flow through the orifice based on the difference in density and viscosity properties. The fluids considered for studies are Air, Ammonia (NH3), Carbon dioxide (CO2), Hydrogen (H2), and Sulphur dioxide (SO2) as compressible fluid category, and water (H2O), liquid ammonia (LNH3), liquid hydrogen (LH2), liquid oxygen (LO2), liquid R12 (Dichlorodifluoromethane) as incompressible fluid category. Correlations are also proposed from the above numerical database to determine Cd as a function of Re, σ, ρr, and µr for the orifice. The correlation provides a significant contribution to the viscous fluid flow measurement with the flow through the orifice.
Publisher
World Scientific and Engineering Academy and Society (WSEAS)
Subject
General Physics and Astronomy
Reference33 articles.
1. Panda S.K., Choudhury B. K., Rath K. C., (2022) A Literature Review on Orifice as a Flow Measuring Device, ECS Transactions, vol. 107(1), pp. 815. https://doi.org/10.1149/10701.0815ecst.
2. Idelchik I. E., Malyavskaya, G. R., Martynenko, O. G., and Fried, E., (1994). Handbook of Hydraulic Resistances, CRC Press, Boca Raton.
3. Gan G., Riffat S. B. (1997). Pressure loss characteristics of orifice and perforated plates, Experimental Thermal and Fluid Science, vol. 14, pp.160-165.
4. Shanfang H., Taiyi M., Dong W., Zhong L. (2013). Study on the discharge coefficient of perforated orifices as a new kind of flowmeter, Experimental Thermal, and Fluid Science, vol. 46, pp. 74-83.
5. Bullen P. R., Cheeseman, D. J., Hussain L. A., and Ruffel A. E., (1987). The Determination of Pipe Contraction Coefficients for Incompressible Turbulent Flow, Int. J. Heat Fluid Flow, vol. 8, pp. 111–118.