Thermalhydraulic Analysis of Four Geometrical Design Parameters in Rib-Roughened Channels

The present article reports RANS simulations of the flow and heat transfer in a 2-dimensional rib-roughened passage. The effects of four different geometrical factors including rib profile, rib pitch-to-height ratio, rib height, and rib width are investigated. The Reynolds number, based on the channel bulk velocity and hydraulic diameter, is 30,000. Two low-Reynolds-number linear EVMs, namely the Menter k-ω-SST model and a variant of Durbin's v 2-f formulation, are examined. All computations are undertaken using the commercial CFD code STAR-CD. In comparison with experimental data, it emerges that the v 2-f model generally returns more accurate results than the k-ω-SST closure.

[1]  Mohammad E. Taslim,et al.  An Experimental Investigation of the Rib Surface-Averaged Heat Transfer Coefficient in a Rib-Roughened Square Passage , 1997 .

[2]  Shiki Okamoto,et al.  Turbulent Shear Flow and Heat Transfer Over the Repeated Two-Dimensional Square Ribs on Ground Plane , 1993 .

[3]  B. Launder,et al.  THE NUMERICAL COMPUTATION OF TURBULENT FLOW , 1974 .

[4]  Reza Kamali,et al.  The importance of rib shape effects on the local heat transfer and flow friction characteristics of square ducts with ribbed internal surfaces , 2008 .

[5]  Hirofumi Hattori,et al.  DNS OF VELOCITY AND THERMAL FIELDS IN TURBULENT CHANNEL FLOW WITH TRANSVERSE-RIB ROUGHNESS , 2004, Proceeding of Third Symposium on Turbulence and Shear Flow Phenomena.

[6]  Masud Behnia,et al.  Conjugate heat transfer predictions in two-dimensional ribbed passages☆ , 2002 .

[7]  D. Wilcox.  Turbulence modeling for CFD , 1993 .

[8]  L. D. Kral.  Recent experience with different turbulence models applied to the calculation of flow over aircraft components , 1998 .

[9]  V. C. Patel,et al.  Analysis of turbulent flow in channels roughened by two-dimensional ribs and three-dimensional blocks. Part I: Resistance , 2007 .

[10]  Paolo Orlandi,et al.  Direct numerical simulations of turbulent channel flow with transverse square bars on one wall , 2003, Journal of Fluid Mechanics.

[11]  T. Liou,et al.  LDV Measurements of Periodic Fully Developed Main and Secondary Flows in a Channel With Rib-Disturbed Walls , 1993 .

[12]  John Kim,et al.  Rough-Wall Turbulent Boundary Layers , 2004 .

[13]  M. Taslim,et al.  Am Experimental Investigation of the Rib Surface-Averaged Heat Transfer Coefficient in a Rib-Roughened Square Passage , 1994 .

[14]  Remi Manceau,et al.  Turbulent heat transfer predictions using the –f model on unstructured meshes , 2000 .

[15]  T. Arts,et al.  The Effect of Periodic Ribs on the Local Aerodynamic and Heat Transfer Performance of a Straight Cooling Channel , 1996 .

[16]  Jenn-Jiang Hwang,et al.  Effect of ridge shapes on turbulent heat transfer and friction in a rectangular channel , 1993 .

[17]  David Wilkie.  FORCED CONVECTION HEAT TRANSFER FROM SURFACES ROUGHENED BY TRANSVERSE RIBS , 2019, Proceeding of International Heat Transfer Conference 3.

[18]  Yacine Addad,et al.  RANS and LES Investigations of Vertical Flows in the Fuel Passages of Gas-Cooled Nuclear Reactors , 2008 .

[19]  Jenn-Jiang Hwang,et al.  Simulation and measurement of enhanced turbulent heat transfer in a channel with periodic ribs on one principal wall , 1993 .

[20]  Sumanta Acharya,et al.  Periodically developed flow and heat transfer in a ribbed duct , 1993 .

[21]  T. S. Ravigururajan,et al.  Development and verification of general correlations for pressure drop and heat transfer in single-phase turbulent flow in enhanced tubes , 1996 .

[22]  D. Laurence,et al.  REFINED EDDY VISCOSITY SCHEMES AND LARGE EDDY SIMULATIONS FOR ASCENDING MIXED CONVECTION FLOWS , 2008 .

[23]  Je-Chin Han,et al.  Heat transfer performance comparisons of five different rectangular channels with parallel angled ribs , 1992 .

[24]  A. Keshmiri,et al.  Turbulent mixed convection flows computed using low-Reynolds-number and strain parameter eddy viscosity models , 2008 .

[25]  Kwang-Yong Kim,et al.  Design optimization of rib-roughened channel to enhance turbulent heat transfer , 2004 .

[26]  F. Menter.  Two-equation eddy-viscosity turbulence models for engineering applications , 1994 .

[27]  B. Launder,et al.  Application of the energy-dissipation model of turbulence to the calculation of flow near a spinning disc , 1974 .

[28]  Gianluca Iaccarino,et al.  Predictions of a turbulent separated flow using commercial CFD codes , 2001 .

[29]  Je-Chin Han,et al.  An investigation of heat transfer and friction for rib-roughened surfaces , 1978 .

[30]  B. Launder,et al.  The numerical computation of turbulent flows , 1990 .

[31]  Masud Behnia,et al.  Reynolds averaged simulation of flow and heat transfer in ribbed ducts , 2002 .

[32]  Commercial Cfd Codes.  Predictions of a Turbulent Separated Flow Using , 2001 .

[33]  T. Liou,et al.  Experimental and Computational Study of Turbulent Flows in a Channel With Two Pairs of Turbulence Promoters in Tandem , 1990 .

[34]  P. Durbin.  Near-wall turbulence closure modeling without “damping functions” , 1991, Theoretical and Computational Fluid Dynamics.

[35]  R. J. Goldstein,et al.  Heat transfer and friction in tubes with repeated-rib roughness , 1971 .

[36]  V. Rich.  Personal communication , 1989, Nature.

[37]  M. Raisee,et al.  Recent progress in the computation of flow and heat transfer in internal cooling passages of turbine blades , 1999 .

[38]  Shia-Hui Peng,et al.  An improved k−ω turbulence model applied to recirculating flows , 2002 .

[39]  Computation of flow and heat transfer in two‐dimensional rib‐roughened passages, using low‐Reynolds‐number turbulence models , 2001 .

[40]  J. Jiménez.  Turbulent flows over rough walls , 2004 .

[41]  Je-Chin Han,et al.  Heat transfer enhancement in channels with turbulence promoters , 1984 .