Unsteady conjugated heat transfer in thick walled pipes involving two-dimensional wall and axial fluid conduction with uniform heat flux boundary condition |
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Authors: | Ali Ate? Selçuk Dar?c? ?efik Bilir |
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Affiliation: | 1. College of Fisheries (CAU-Imphal), Lembucherra, Tripura 799210, India;2. ICAR RC for NEH Region, Tripura 799210, India;3. Dr. Rajendra Prasad Central Agricultural University, Samastipur 848125, India;4. ICAR-Central Institute of Fisheries Technology, Cochin 682029, India;5. ICAR-Central Institute of Fisheries Education, Mumbai 400061, India |
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Abstract: | Transient conjugated heat transfer in thick walled pipes for thermally developing laminar flow is investigated involving two-dimensional wall and axial fluid conduction. The problem is solved numerically by a finite-difference method for hydrodynamically developed flow in a two-regional pipe, initially isothermal in which the upstream region is insulated and the downstream region is subjected to a suddenly applied uniform heat flux. A parametric study is done to analyze the effects of four defining parameters namely, wall thickness ratio, wall-to-fluid thermal conductivity ratio, wall-to-fluid thermal diffusivity ratio and the Peclet number. The results are given by non-dimensional interfacial heat flux values, and it is observed that, heat transfer characteristics are strongly dependent on the parameter values. |
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