Commenced in January 2007
Paper Count: 30169
Computational Simulation of Turbulence Heat Transfer in Multiple Rectangular Ducts
Abstract:This study comprehensively simulate the use of k-ε model for predicting flow and heat transfer with measured flow field data in a stationary duct with elucidates on the detailed physics encountered in the fully developed flow region, and the sharp 180° bend region. Among the major flow features predicted with accuracy are flow transition at the entrance of the duct, the distribution of mean and turbulent quantities in the developing, fully developed, and sharp 180° bend, the development of secondary flows in the duct cross-section and the sharp 180° bend, and heat transfer augmentation. Turbulence intensities in the sharp 180° bend are found to reach high values and local heat transfer comparisons show that the heat transfer augmentation shifts towards the wall and along the duct. Therefore, understanding of the unsteady heat transfer in sharp 180° bends is important. The design and simulation are related to concept of fluid mechanics, heat transfer and thermodynamics. Simulation study has been conducted on the response of turbulent flow in a rectangular duct in order to evaluate the heat transfer rate along the small scale multiple rectangular duct
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1061234Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1077
 Vazquez, M.S., W.V. Rodriguez, and R. Issa, Effect of ridged Walls on the heat transfer in a heated square duct International Journal of Heat and Mass Transfer, 2005. 48(10): p. 2050-2063.
 Rokni, M. and T.B. Gatski, Predicting turbulent convective heat transfer in fully developed duct flows. International Journal of Heat and Fluid Flow, 2001. 22(4): p. 381-392.
 Maeda, N., M. Hirato, and H. Fujita, Turbulent flow in a rectangular duct with a smooth-to-rough step change in surface roughness. International Journal of Energy, 2005. 30(2-4): p. 129-148.
 Yuan, J., M. Rokni, and B. Sunden, Simulation of fully developed laminar heat and mass transfer in fuel cell ducts with different crosssections. International Journal of Heat and Mass Transfer, 2001. 44(21): p. 4047-4058.
 Abraham, J.P. and E.M. Sparrow, Fraction drag resulting from the simultaneous imposed motions of a freestream and its bounding surface. International Journal of Heat and Fluid Flow, 2005. 26(2): p. 289-295.
 Sparrow, E.M. and J.P. Abraham, Universal solutions for the streamwise variation of the temperature of a moving sheet in the presence of a moving fluid. International Journal of Heat and Mass Transfer, 2005. 48(15): p. 3047-3056.
 Sewall, E.A., et al., Experimental validation of large eddy simulations of flow and heat transfer in a stationary ribbed duct. International Journal of Heat and Fluid Flow, 2006. 27(2): p. 243-258.
 Chung, Y.M., P.G. Tucker, and D.G. Roychowdhury, Unsteady laminar flow and convective heat transfer in a sharp 180O bend. International Journal of Heat and Fluid Flow, 2003. 24(1): p. 67-76.
 Yuan, J., M. Rokni, and B. Sunden, Three-dimensional computational analysis of gas and heat transport phenomena in ducts relevant for anode-supported solid oxide fuel cells. International Journal of Heat and Mass Transfer, 2003. 46(5): p. 809-821.
 Bradshaw P., An introduction to turbulence and its measurement. Pergamon Oxford, 1971.