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Research Paper | Mechanical Engineering | India | Volume 4 Issue 5, May 2015 | Rating: 6.4 / 10
Analysis of Heat Transfer in Turbulent Channel Using Grooves
Mayank Bhola | Dr. Satyendra Singh
Abstract: This paper presents a numerical investigation of forced convection in a two-dimensional turbulent channel with periodic transverse grooves on the lower channel using CFD in ANSYS FLUENT. The lower wall is subjected to a uniform heat flux of 1000W/m2 while the upper wall is insulated. To investigate effect of grooves on heat transfer and friction factor, computations based on a finite volume method, are carried out by utilizing Realizable k- turbulent model with non-equilibrium wall function. Parametric runs are made for Reynolds numbers ranging from 6000 to 18, 000 with the groove-width to channel-height ratio (B/H) of 0.5 to 1.5 while the groove pitch ratio of 2 and the depth ratio of 0.5 are fixed throughout. It is found that the grooved channel provides a considerable increase in heat transfer of about 146 % to 199 % for different B/H values.
Keywords: Turbulent channel, CFD, ANSYS FLUENT, Grooves, Realizable k-
Edition: Volume 4 Issue 5, May 2015,
Pages: 2857 - 2861