Flow and Heat Transfer Mechanism Analysis in Outward Convex Asymmetrical Corrugated Tubes
The flow and heat transfer mechanism in convex
corrugated tubes have been investigated through numerical
simulations in this paper. Two kinds of tube types named as symmetric
corrugated tube (SCT) and asymmetric corrugated tube (ACT) are
modeled and studied numerically based on the RST model. The
predictive capability of RST model is examined in the corrugation wall
in order to check the reliability of RST model under the corrugation
wall condition. We propose a comparison between the RST modelling
the corrugation wall with existing direct numerical simulation of Maaß
C and Schumann U [14]. The numerical results pressure coefficient at
different profiles between RST and DNS are well matched. The
influences of large corrugation tough radii to heat transfer and flow
characteristic had been considered. Flow and heat transfer comparison
between SCT and ACT had been discussed. The numerical results
show that ACT exhibits higher overall heat transfer performance than
SCT.
[1] H.Z. Han, B.X. Li, B.Y. Yu, Y.R. He, F.C. Li. Numerical study of flow
and heat transfer characteristics in outward convex corrugated tubes,
International Journal of Heat Mass Transfer. Publication on line, 2012.
[2] S. Pethkool, S. Eiamsa-ard, Turbulent heat transfer enhancement in a heat
exchanger using helically corrugated tube, International Communications
in Heat and Mass Transfer 38 (2011) 340-347.
[3] P.G. Vicente, A. Garcia, A. Viedma, Experimental investigation on heat
transfer and frictional characteristics of spirally corrugated tubes in
turbulent flow at different Prandtl numbers, International Journal of Heat
and Mass Transfer 47 (2004) 671-681.
[4] S. Rainieri, G. Pagliarini, Convective heat transfer to temperature
dependent property fluids in the entry region of corrugated tubes,
International Journal of Heat and Mass Transfer 45 (2002) 4525-4536.
[5] S. Rozzi, R. Massini, G. Paciello, Heat treatment of fluid foods in a shell
and tube heat exchanger: comparison between smooth and helically
corrugated wall tubes, Journal of Food Engineering 79 (2007) 249-254.
[6] G. Fabbri, R. Rossi, Analysis of the Heat Transfer in the Entrance Region
of Optimized Corrugated Wall Channel, International Communications in
Heat and Mass Transfer, 32 (2005) 902-912.
[7] L. Suriyan, W. Somchai, The effects of corrugation pitch on the
condensation heat transfer coefficient and pressure drop of R-134a inside
horizontal corrugated tube, International Journal of Heat and Mass
Transfer 53 (2010) 2924-2931.
[8] K. Aroonrat, S. Wongwises, Evaporation heat transfer and friction
characteristics of R-134a flowing downward in a vertical corrugated tube,
Experimental Thermal and Fluid Science 35 (2011) 20-28.
[9] A. Barba, S. Rainieri, M. Spiga, Heat transfer enhancement in a
corrugated tube, International Communications in Heat and Mass
Transfer 3 (2002) 313-322.
[10] F. Illa'n, A. Viedma, Prediction of ice slurry performance in a corrugated
tube heat exchanger, International Journal of Refrigeration, 32 (2009)
1302-1309.
[11] A. Zachár, Analysis of coiled-tube heat exchangers to improve heat
transfer rate with spirally corrugated wall, International Journal of Heat
and Mass Transfer 53 (2010) 3928-3939.
[12] N. Ghorbani, H. Taherian, M. Gorji, H. Mirgolbabaei, Experimental study
of mixed convection heat transfer in vertical helically coiled tube heat
exchangers, Experimental Thermal and Fluid Science, 34 (2010)
900-905.
[13] M. Moawed, Experimental investigation of natural convection from
vertical and horizontal helicoidal pipes in HVAC applications, Energy
Conservation and Management 46 (2005) 2996-3013.
[14] Maaß, C, U Schumann. 1996. Direct numerical simulation of separated
turbulent flow over a wavy boundary. Notes on numerical fluid
mechanics 52:227-241.
[15] T.S. Park, H.S. Choi, K. Suzuki, Nonlinea k-╬Á model and its application to
the flow and heat transfer in a channel having one undulant wall, Int. J.
Heat Mass. Transfer. 47 (2004) 2403-2415.
[16] K. Hafez, O. Elsamni, K. Zakaria, Numerical investigation of the fully
developed turbulent flow over a moving wavy wall using k-╬Á turbulence
model, Alexand. Eng. J. (2011).
[1] H.Z. Han, B.X. Li, B.Y. Yu, Y.R. He, F.C. Li. Numerical study of flow
and heat transfer characteristics in outward convex corrugated tubes,
International Journal of Heat Mass Transfer. Publication on line, 2012.
[2] S. Pethkool, S. Eiamsa-ard, Turbulent heat transfer enhancement in a heat
exchanger using helically corrugated tube, International Communications
in Heat and Mass Transfer 38 (2011) 340-347.
[3] P.G. Vicente, A. Garcia, A. Viedma, Experimental investigation on heat
transfer and frictional characteristics of spirally corrugated tubes in
turbulent flow at different Prandtl numbers, International Journal of Heat
and Mass Transfer 47 (2004) 671-681.
[4] S. Rainieri, G. Pagliarini, Convective heat transfer to temperature
dependent property fluids in the entry region of corrugated tubes,
International Journal of Heat and Mass Transfer 45 (2002) 4525-4536.
[5] S. Rozzi, R. Massini, G. Paciello, Heat treatment of fluid foods in a shell
and tube heat exchanger: comparison between smooth and helically
corrugated wall tubes, Journal of Food Engineering 79 (2007) 249-254.
[6] G. Fabbri, R. Rossi, Analysis of the Heat Transfer in the Entrance Region
of Optimized Corrugated Wall Channel, International Communications in
Heat and Mass Transfer, 32 (2005) 902-912.
[7] L. Suriyan, W. Somchai, The effects of corrugation pitch on the
condensation heat transfer coefficient and pressure drop of R-134a inside
horizontal corrugated tube, International Journal of Heat and Mass
Transfer 53 (2010) 2924-2931.
[8] K. Aroonrat, S. Wongwises, Evaporation heat transfer and friction
characteristics of R-134a flowing downward in a vertical corrugated tube,
Experimental Thermal and Fluid Science 35 (2011) 20-28.
[9] A. Barba, S. Rainieri, M. Spiga, Heat transfer enhancement in a
corrugated tube, International Communications in Heat and Mass
Transfer 3 (2002) 313-322.
[10] F. Illa'n, A. Viedma, Prediction of ice slurry performance in a corrugated
tube heat exchanger, International Journal of Refrigeration, 32 (2009)
1302-1309.
[11] A. Zachár, Analysis of coiled-tube heat exchangers to improve heat
transfer rate with spirally corrugated wall, International Journal of Heat
and Mass Transfer 53 (2010) 3928-3939.
[12] N. Ghorbani, H. Taherian, M. Gorji, H. Mirgolbabaei, Experimental study
of mixed convection heat transfer in vertical helically coiled tube heat
exchangers, Experimental Thermal and Fluid Science, 34 (2010)
900-905.
[13] M. Moawed, Experimental investigation of natural convection from
vertical and horizontal helicoidal pipes in HVAC applications, Energy
Conservation and Management 46 (2005) 2996-3013.
[14] Maaß, C, U Schumann. 1996. Direct numerical simulation of separated
turbulent flow over a wavy boundary. Notes on numerical fluid
mechanics 52:227-241.
[15] T.S. Park, H.S. Choi, K. Suzuki, Nonlinea k-╬Á model and its application to
the flow and heat transfer in a channel having one undulant wall, Int. J.
Heat Mass. Transfer. 47 (2004) 2403-2415.
[16] K. Hafez, O. Elsamni, K. Zakaria, Numerical investigation of the fully
developed turbulent flow over a moving wavy wall using k-╬Á turbulence
model, Alexand. Eng. J. (2011).
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:57511", author = "Huaizhi Han and Bingxi Li and Yurong He and Rushan Bie and Zhao Wu", title = "Flow and Heat Transfer Mechanism Analysis in Outward Convex Asymmetrical Corrugated Tubes", abstract = "The flow and heat transfer mechanism in convex
corrugated tubes have been investigated through numerical
simulations in this paper. Two kinds of tube types named as symmetric
corrugated tube (SCT) and asymmetric corrugated tube (ACT) are
modeled and studied numerically based on the RST model. The
predictive capability of RST model is examined in the corrugation wall
in order to check the reliability of RST model under the corrugation
wall condition. We propose a comparison between the RST modelling
the corrugation wall with existing direct numerical simulation of Maaß
C and Schumann U [14]. The numerical results pressure coefficient at
different profiles between RST and DNS are well matched. The
influences of large corrugation tough radii to heat transfer and flow
characteristic had been considered. Flow and heat transfer comparison
between SCT and ACT had been discussed. The numerical results
show that ACT exhibits higher overall heat transfer performance than
SCT.", keywords = "Asymmetric corrugated tube, RST, DNS, flow and
heat transfer mechanism.", volume = "6", number = "11", pages = "2431-7", }
