Detached Eddy Simulation of Turbulent Flow and Heat Transfer in a Ribbed Duct

Detached Eddy Simulation (DES) of a hydrodynamic and thermally developed turbulent flow is presented for a stationary duct with square ribs aligned normal to the main flow direction. The rib height to channel hydraulic diameter (e/D h ) is 0.1, the rib pitch to rib height (P/e) is 10 and the calculations have been carried out for a bulk Reynolds number of 20,000. DES calculations are carried out on a 96 3 grid, a 64 3 grid, and a 48 3 grid to study the effect of grid resolution. Based on the agreement with earlier LES computations, the 64 3 grid is observed to be suitable for the DES computation. DES and RANS calculations carried out on the 64 3 grid are compared to LES calculations on 96 3 /128 3 grids and experimental measurements

[1]  H. Iacovides.  Computation of flow and heat transfer through rotating ribbed passages , 1998 .

[2]  M. Strelets.  Detached eddy simulation of massively separated flows , 2001 .

[3]  B. Sundén,et al.  On prediction of thermal-hydraulic characteristics of square-sectioned ribbed cooling ducts , 2001 .

[4]  Sadanari Mochizuki,et al.  Comparison between laminar and turbulent heat transfer in a stationary square duct with transverse or angled rib turbulators , 2001 .

[5]  Danesh K. Tafti,et al.  Large Eddy Simulation of Flow and Heat Transfer in a 90 deg Ribbed Duct With Rotation: Effect of Coriolis and Centrifugal Buoyancy Forces , 2004 .

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

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

[8]  M. Hirota,et al.  Measurement of turbulent flow in a square duct with roughened walls on two opposite sides , 1989 .

[9]  Jie Han,et al.  Heat transfer and friction characteristics in rectangular channels with rib turbulators , 1988 .

[10]  Kazunori Watanabe,et al.  LES Simulation and Experimental Measurement of Fully Developed Ribbed Channel Flow and Heat Transfer , 2002 .

[11]  Danesh K. Tafti,et al.  Evaluating the role of subgrid stress modeling in a ribbed duct for the internal cooling of turbine blades , 2005 .

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

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

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

[15]  Arash Saidi,et al.  Heat transfer enhancement in square ducts with V-shaped ribs of various angles , 2002 .

[16]  Jenn-Jiang Hwang,et al.  Turbulent transport phenomena in a channel with periodic rib turbulators , 1992 .

[17]  Je-Chin Han,et al.  Heat Transfer and Friction in Channels With Two Opposite Rib-Roughened Walls , 1984 .

[18]  R. Zerkle,et al.  Prediction of Turbulent Flow and Heat Transfer in a Ribbed Rectangular Duct With and Without Rotation , 1993 .