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Heat Transfer in Non-Newtonian Fluid Flow from an Oblique Array of Plates of Unequal Length

Tusnapuckdi, Ammata (2002) Heat Transfer in Non-Newtonian Fluid Flow from an Oblique Array of Plates of Unequal Length. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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The periodically fully developed laminar heat transfer and pressure drop of arrays with non-uniform plate length aligned at angle to the flow direction of Non-Newtonian and Newtonian fluids are studied by numerical analysis. The body-fitted coordinate system is adopted to retain the corresponding periodic relation of the lines in physical coordinate system and computational domains in body-fitted coordinate system. The computations are carried out in one periodic cycle.Power law model non-Newtonian fluids are considered. The continuity equation, the x-y momentum equations, and the energy equation with viscous energy dissipation are presented. The power law scheme, discretization, SIMPLE algorithm, TDMA, Jacobi iterative methods are adopted in the numerical procedure for the integration of the governing equations.In this dissertation, focus is placed on the effects of the flow index, the generalized Reynolds number, and various geometrical parameters on the flow field and thermal behavior of the flow.The results are obtained and show that the form drag of plate including the inlet and outlet effects gradually becomes significant after a certain value of Reynolds number.The flow re-circulation has a significant influence on the average heat transfer at higher Reynolds number. The increment of flow index leads to the increase of friction factor but decrease of heat transfer and fluid temperature.The longer plate causes the increase of the friction factor and heat transfer as well as fluid temperature. The increment of transverse pitch leads to the decrease of both friction factor and heat transfer as well as fluid temperature.The increment of plate angle leads to the increase of friction factor, average heat transfer, and fluid temperature.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairChen, James L.S.jlsc@pitt.eduJLSC
Committee MemberSchaefer,
Committee MemberChyu,
Committee MemberSmolinski,
Committee MemberEnick, Robert
Date: 21 March 2002
Date Type: Completion
Defense Date: 12 March 2002
Approval Date: 21 March 2002
Submission Date: 21 February 2002
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Mechanical Engineering
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: Heat Tranfer; Non Newtonian Fluid; Oblique Plate
Other ID:, etd-02212002-163324
Date Deposited: 10 Nov 2011 19:31
Last Modified: 15 Nov 2016 13:36


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