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Title: Finite element analysis to confined turbulent swirling flow with heat transfer
Author: Kong, L.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1993
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A finite element based numerical method has been developed in order to model the isothermal and heat tranfer aspects of turbulent swirling flows. A number of turbulent modelling techniques, such as the one-equation (K - L) model, the two-equation (K - ε) model, and the Reynolds stress models have been investigated. Numerical results indicate that better turbulence models can produce higher accurate predictions. In the present study, the two-equation model gives much better flow field predictions than the one-equation model, and the Algebraic Stress model produces predictions even closer to the experimental results. The universal law of wall is adopted as the main techniques in modelling the near wall zone, whilst other near wall modelling is investigated. it is found that boundary conditions, especially the inlet boundary conditions play important roles in the development of the downstream flow field. Unrealistic inlet conditions for any of the flow variables can be lead to erroneous prediction downstream.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available