SciELO - Scientific Electronic Library Online

vol.46 número1Baseline adjustment methodology in a shared water savings contract during severe water restrictions - a case study in the Western Cape, South AfricaPrivate sector impact investment in water purification infrastructure in South Africa: a qualitative analysis of opportunities and barriers índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados



Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google


Water SA

versión On-line ISSN 1816-7950
versión impresa ISSN 0378-4738


DARWEESH, Moustafa S  y  HUSSIEN, Osama S. Numerical investigation of leakage behaviour in long radius elbows. Water SA [online]. 2020, vol.46, n.1, pp.38-43. ISSN 1816-7950.

This paper focuses on the relationship between leakage opening areas and pressure heads for 90° long radius elbows under elastic limits using finite element analysis (SAP 2000). The results indicate that leakage opening areas grow linearly as the system pressure increases and the relation is described by the pressure-area slope (M). A sensitivity study was performed to show the effect of various parameters on M, as well as the leakage exponent (N). It was found that elbow internal diameter has the largest influence on the pressure-area slope, followed by the modulus of elasticity and finally elbow wall thickness. The longitudinal stress and Poisson's ratio have a negligible effect on M. Furthermore, leak quantity is related to the pressure raised to a power ranging from 0.495 to 0.592. Regression analysis was used to derive an empirical equation to predict the pressure-area slope of round holes within elbows with different properties.

Palabras clave : finite element analysis; leakage; leakage exponent; long radius elbows; pressure.

        · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons