New coefficient to characterize compressible flow at T-junctions
Research Group
Mecánica de Fluidos e Ingeniería TérmicaKnowledge Area
Mecánica de FluidosPublication date
2010-12Publisher
Elsevier ScienceBibliographic Citation
PÉREZ GARCÍA, J., SANMIGUEL ROJAS, E., VIEDMA, A. New coefficient to characterize compressible flow at T-junctions. Applied Mathematical Modelling, 34 (12): 4289-4305, Diciembre 2010. ISSN 0307-904XPeer review
siKeywords
Compresible flowT-junctions
Numerical simulation
Loss coefficients
Linking coefficient definition
Uncertainty propagation
Flujos compresibles
T-uniones
Simulación numérica
Coeficiente de pérdidas definición
Vinculación definición coeficiente
Propagación de incertidumbre
Abstract
A new coefficient to characterize the global behaviour of adiabatic compressible flow at
T-junctions is proposed. The new coefficient is defined according to the conclusions
derived from the uncertainty propagation analysis of the total pressure loss coefficient defined by Miller for compressible flow. The numerical results obtained using the new linking between branches coefficient definition, K, show a logarithmic relationship with mass flow rate ratio between branches, q , and the extrapolated Mach number in the
common branch, M*3 , for all flow types studied in a 90 degree T-junction. Reliable and practical two parameters or global correlations, K=K(M*3,q), have been btained. These correlations can be easily implemented as boundary conditions into 1-D global simulation codes.
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