A validated CFD methodology to obtain the total pressure loss coefficients in Internal compressible flow at junctions
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Knowledge AreaMecánica de Fluidos
SponsorsThis research has been supported by the Seneca project PB/19/FS/97 Comunidad Autónoma Región de Murcia (experimental facilities) and MCYT project DPI2003-02719 (software). The numerical simulations have been made in the computer facilities at the SAIT (Universidad Politécnica de Cartagena).
Bibliographic CitationPérez-García, J., Sanmiguel-Rojas, E., Hernández-Grau, J., and Viedma, A. "A validated CFD methodology to obtain the total pressure loss coefficients in internal compressible flow at junctions." Proceedings of the ASME 8th Biennial Conference on Engineering Systems Design and Analysis. Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology. Torino, Italy. July 4–7, 2006. pp. 633-642. ASME. https://doi.org/10.1115/ESDA2006-95073
Computational fluid dynamics
A global methodology has been developed and validated to obtain the total pressure loss coefficient in internal compressible flow at T-type junctions. This methodology is based on the calculation of the thermo-fluid properties extrapolated to the branch axes intersection, once the straight pipe friction losses numerically calculated have been subtracted from the total energy losses. For this purpose, a steady adiabatic compressible one-dimensional flow with friction mathematical model has been applied to the results obtained by numerical simulation using the commercial finite volume code FLUENT. A 90 degree T-type junction has been studied and the predicted loss coefficient has been related to the extrapolated Mach number in the common branch and to the mass flow rate ratio between branches at different flow configurations, in both combining and dividing flows. The numerical results have been compared with experimental results and published data in open literature. In general, a good ...