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3D numerical and experimental analysis for thermal–hydraulic characteristics of air flow inside a circular tube with different tube inserts by Yu-Wei Chiu; Jiin-Yuh Jang is a Engineering article available to read on EtoBox.
What is 3D numerical and experimental analysis for thermal–hydraulic characteristics of air flow inside a circular tube with different tube inserts about?
Numerical and experimental analyses were carried out to study thermal-hydraulic characteristics of air flow inside a circular tube with different tube inserts. Three kinds of tube inserts, including longitudinal strip inserts (both with and without holes) and twisted-tape inserts with three different twisted angles (a = 15.3°, 24.4°and 34.3°) have been investigated for different inlet frontal velocity ranging from 3 to 18 m/s. Numerical simulation was performed by a 3D turbulence analysis of the heat transfer and fluid flow. Conjugate convective heat transfer in the flow field and heat conduction in the tube inserts are considered also. The experiments were conducted in a shell and tube exchanger with overall counterflow arrangement. The working fluid in the tube side was cold air, while the hot Dowtherm fluid was on the shell side. To obtain the heat transfer characteristics of the test section from the experimental data, the e-NTU (effectiveness-number of transfer unit) method is applied to determine the overall conductance (UA product) in the analysis. It was found that the heat transfer coefficient and the pressure drop in the tubes with the longitudinal strip inserts (without
Who reads 3D numerical and experimental analysis for thermal–hydraulic characteristics of air flow inside a circular tube with different tube inserts?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Yu-Wei Chiu; Jiin-Yuh Jang
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 1359-4311)
- Published
- 2009
- Language
- EN
- Field
- Engineering (Physical Sciences)