Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.6/602
Título: A general correlation for the local loss coefficient in newtonian axisymmetric sudden expansions
Autor: Oliveira, Paulo Jorge dos Santos Pimentel de
Pinho, Fernando Tavares de
Schulte, A.
Palavras-chave: Sudden expansion
Loss coefficient
Pressure recovery coefficient
Laminar flow
Data: 28-Abr-2010
Resumo: Results from numerical simulations and guidance from an approximated corrected-theory, developed by Oliveira and Pinho (1997), have been used to arrive at a correlation expressing the irreversible loss coefficient for laminar Newtonian flow in axisymmetric sudden expansions. The correlation is valid for the ranges 1.5 < D2/D1 < 4 and 0.5 < Re < 200 with errors of less than 5%, except for 25 < Re < 100 where the error could be as much as 7%. The recirculation bubble length is also presented for the same range of conditions and the pressure recovery coefficient was calculated for Reynolds numbers above 15.
URI: http://hdl.handle.net/10400.6/602
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