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Fully developed forced convection through trapezoidal and hexagonal ducts.

Author(s) : SADASIVAM R., MANGLIK R. M., JOG M. A.

Type of article: Article

Summary

Modelling is performed using a finite-difference method. A coordinate transformation is employed to map the irregular flow cross-section onto a rectangular computational domain. Both H1 (axially uniform wall heat flux with peripherally uniform wall temperature condition) and T (axially and peripherally uniform wall temperature condition) thermal boundary conditions are considered as they represent the fundamental limiting conditions in most practical applications. Solutions for velocity and temperature variations are obtained for a wide range of duct aspect ratios and with four different trapezoidal angles. The friction factor and Nusselt number results show a strong dependence on duct geometry. The equations describe the computed numerical values with good accuracy and are important for the design of compact heat exchangers.

Details

  • Original title: Fully developed forced convection through trapezoidal and hexagonal ducts.
  • Record ID : 2001-0084
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 42 - n. 23
  • Publication date: 1999/12

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