Modeling of Fluid Flow in 2D Triangular, Sinusoidal, and Square Corrugated Channels

The main focus of the work was concerned with hydrodynamic and thermal analysis of the plate heat exchanger channel with corrugation patterns suggested to be triangular, sinusoidal, and square corrugation. This study was to numerically model and validate the triangular corrugated channel with dimensions/parameters taken from open literature, and then model/analyze both sinusoidal, and square corrugated channel referred to the triangular model. Initially, 2D modeling with local extensive analysis for triangular corrugated channel was carried out. By that, all local pressure drop, wall shear stress, friction factor, static temperature, heat flux, Nusselt number, and surface heat coefficient, were analyzed to interpret the hydrodynamic and thermal phenomena occurred in the flow. Furthermore, in order to facilitate confidence in this model, a comparison between the values predicted, and experimental results taken from literature for almost the same case, was done. Moreover, a holistic numerical study for sinusoidal and square channels together with global comparisons with triangular corrugation under the same condition, were handled. Later, a comparison between electric, and fluid cooling through varying the boundary condition was achieved. The constant wall temperature and constant wall heat flux boundary conditions were employed, and the different resulted Nusselt numbers as a consequence were justified. The results obtained can be used to come up with an optimal design, a ‘compromise’ between heat transfer and pressure drop. Keywords—Corrugated Channel – CFD Heat Exchanger – Heat Enhancement.

[1]  R. M. Manglik,et al.  Enhanced heat transfer due to curvature-induced lateral vortices in laminar flows in sinusoidal corrugated-plate channels , 2004 .

[2]  Enrong Lu,et al.  Numerical study on natural convection inside the channel between the flat-plate cover and sine-wave absorber of a cross-corrugated solar air heater , 2000 .

[3]  P. Heggs,et al.  Local Transfer Coefficients in Corrugated Plate Heat Exchanger Channels , 1997 .

[4]  Hsueh-Chia Chang,et al.  Heat transfer enhancement in three-dimensional corrugated channel flow , 1998 .

[5]  S. Vanka,et al.  Convective heat transfer in periodic wavy passages , 1995 .

[6]  Enrico Nobile,et al.  Numerical analysis of fluid flow and heat transfer in periodic wavy channels , 2001 .

[7]  R. Shah.  Laminar Flow Forced convection in ducts , 1978 .

[8]  R Poulter,et al.  Hydrodynamics and thermal characteristics of corrugated channels: computational approach , 2000 .

[9]  N. K. Anand,et al.  Turbulent heat transfer in a serpentine channel with a series of right-angle turns , 1995 .

[10]  Weeratunge Malalasekera,et al.  An introduction to computational fluid dynamics - the finite volume method , 2007 .

[11]  S. Paras,et al.  Optimal design of a plate heat exchanger with undulated surfaces , 2009 .

[12]  Spiros V. Paras,et al.  Local Velocities Inside the Gas Phase During Counter-Current Two-Phase Flow in a Narrow Vertical Channel , 2002 .

[13]  Ramesh K. Shah,et al.  Numerical study of flow patterns of compact plate-fin heat exchangers and generation of design data for offset and wavy fins , 2009 .

[14]  T. Ko.  A numerical study on developing laminar forced convection and entropy generation in half-and double-sine ducts , 2007 .

[15]  T. Nishimura,et al.  Vortices and wall shear stresses in asymmetric and symmetric channels with sinusoidal wavy walls for pulsatile flow at low Reynolds numbers , 1998 .

[16]  H. Martin.  A theoretical approach to predict the performance of chevron-type plate heat exchangers , 1996 .

[17]  FULLY DEVELOPED FLOW STRUCTURES AND HEAT TRANSFER IN SINE-SHAPED WAVY CHANNELS , 2004 .

[18]  Raj M. Manglik,et al.  Low Reynolds number forced convection in three-dimensional wavy-plate-fin compact channels: fin density effects , 2005 .

[19]  Ya-Ling He,et al.  Three-dimensional numerical study of wavy fin-and-tube heat exchangers and field synergy principle analysis , 2007 .

[20]  R. M. Manglik,et al.  Effect of fin waviness and spacing on the lateral vortex structure and laminar heat transfer in wavy-plate-fin cores , 2004 .

[21]  Frédéric Plourde,et al.  Turbulent heat and mass transfer in sinusoidal wavy channels , 2008 .

[22]  Spiros V. Paras,et al.  Flow and Heat Transfer in Narrow Channels with Corrugated Walls: A CFD Code Application , 2005 .

[23]  V. Kottke,et al.  Comparison of heat and mass transfer in different heat exchanger geometries with corrugated walls , 2002 .

[24]  P. Naphon,et al.  Numerical analysis on the fluid flow and heat transfer in the channel with V-shaped wavy lower plate☆ , 2008 .

[25]  Yasar Islamoglu,et al.  The effect of channel height on the enhanced heat transfer characteristics in a corrugated heat exchanger channel , 2003 .

[26]  David F. Fletcher,et al.  Low-Reynolds number heat transfer enhancement in sinusoidal channels , 2007 .

[27]  Spiros V. Paras,et al.  Flow and Heat Transfer Prediction in a Corrugated Plate Heat Exchanger using a CFD Code , 2006 .

[28]  Bernard Liengme.  Guide to Microsoft Excel 2007 for Scientists and Engineers , 2008 .

[29]  M. Pavageau,et al.  Comparison of low-cost two-equation turbulence models for prediction flow dynamics in twin-jets devices , 2007 .