Heat transfer enhancement through sudden expansion pipe airflow using swirl generator with different angles

Experimental Thermal and Fluid Science

Volumn 45, Issue , 2013, Pages 146-154

  Zohir, A E ^a   Gomaa, A G ^b  

^a TABBIN INSTITUTE FOR METALLURGICAL STUDIES   (Egypt)

^b HELWAN UNIVERSITY   (Egypt)

Author keywords

Heat transfer augmentation; Sudden expansion; Swirl flow

Indexed keywords

BLADE ANGLE; DOWNSTREAM FLOW; ENHANCEMENT FACTOR; HEAT TRANSFER AND PRESSURE DROP CHARACTERISTICS; HEAT TRANSFER AUGMENTATION; HEAT TRANSFER ENHANCEMENT; HEAT TRANSFER RATE; PROPELLER FANS; SUDDEN EXPANSION; SWIRL ANGLES; SWIRL FLOW; SWIRL GENERATORS; SWIRLERS; TEST SECTIONS; UNIFORM HEAT FLUX; UPSTREAM FLOW;

AIR; EXPANSION; HEAT FLUX; NUSSELT NUMBER; REYNOLDS NUMBER; SPECIFIC HEAT; TUBES (COMPONENTS);

PROPELLERS;

EID: 84871680772     PISSN: 08941777     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.expthermflusci.2012.10.018     Document Type: Article

References (27)

1. Huang R.F., Tsai F.C. Observations of swirling flows behind circular disks. AIAA Journal 2001, 39:1106-1112.
2. Bilen K., Bakirci K., Yapici S., Yavuz T. Heat transfer from a plate impinging swirl jet. Int. J. Energy Res. 2002, 26:305-320.
3. Datta A. Influence of inlet flow conditions on the performance of a swirl-stabilized combustor burning liquid fuel spray. Int. J. Energy Res. 2000, 24(April):373-390.
4. Saha S.K., Dutta A. Thermo hydraulic study of laminar swirl flow through a circular tube fitted with twisted tapes. J. Heat Transfer 2001, 123(3):417-427.
5. Saha S.K., Dutta A., Dhal S.K. Friction and heat transfer characteristics of laminar swirl flow through a circular tube fitted with regularly spaced twisted tape elements. Int. J. Heat Mass Transfer 2001, 44:4211-4223.
6. Hong S.W., Bergles A.E. Augmentation of laminar flow heat transfer in tubes by means of twisted-tape inserts. ASME J. Heat Transfer 1976, 98:251-256.
7. Yildiz C., Bicer Y., Pehlivan D. Effect of twisted strips on heat transfer and pressure drop in heat exchangers. Energy Conv. Manage. 1998, 39(3/4):331-336.
8. Chang S.W., Yang T.L., Liou J.S. Heat transfer and pressure drop in tube with broken twisted tape insert. Exp. Therm. Fluid Sci. 2007, 32:489-501.
9. Eiamsa-ard S., Promvonge P. Thermal characteristics in round tube fitted with serrated twisted tape. Appl. Therm. Eng. 2010, 30:1673-1682.
10. Wongcharee K., Eiamsa-ard S. Friction and heat transfer characteristics of laminar swirl flow through the round tubes inserted with alternate clockwise and counter-clockwise twisted-tapes. Int. Comm. Heat Mass Transfer 2011, 38:348-352.
11. Gül H., Evin D. Heat transfer enhancement in circular tubes using helical swirl generator insert at the entrance. Int. J. Therm. Sci. 2007, 46:1297-1303.
12. Zaherzadeh N.H., Jagadisht B.S. Heat transfer in decaying swirl flows. Int. J. Heat Mass Trans. 1975, 18:941-944.
13. Saraç B.A., Bali T. An experimental study on heat transfer and pressure drop characteristics of decaying swirl flow through a circular pipe with a vortex generator. Exp. Therm. Fluid Sci. 2007, 32:158-165.
14. A.A. Mostafa, Effect of swirl angle and geometry on heat transfer in turbulent pipe flow, M. Sc. thesis, Faculty of Engineering, Cairo University, 1980.
15. G.M. Mostafa, Effect of swirling angle and swirler number on heat transfer and pressure drop in turbulent tube flow, M. Sc. thesis, Faculty of Engineering, Cairo University, 1987.
16. Durmus A., Kurtbaş I., Gülçimen F., Turgut E. Investigation of the effect of co axis free rotating propeller type turbulators on the performance of heat exchanger. Int. Commun. Heat Mass Transfer 2004, 31:133-142.
17. Kurtbaş I., Durmuş A., Eren H., Turgut E. Effect of propeller type swirl generators on the entropy generation and efficiency of heat exchangers. Int. J. Thermal Sci. 2007, 46:300-307.
18. Eiamsa-ard S., Rattanawong S., Promvonge P.T. Turbulent convection in round tube equipped with propeller type swirl generators. Int. Commun. Heat Mass Transfer 2009, 36:357-364.
19. Vanierschot M., Van den Bulck E. The influence of swirl on reattachment length in an abrupt axisymmetric expansion. Int. J. Heat Fluid Flow 2008, 29:75-82.
20. Dellenback P.A., Metzger D.E., Neitzel G.P. Heat transfer to turbulent swirling flow through a sudden axisymmetric expansion. J. Heat Transfer 1987, 109:613-620.
21. Dellenback P.A., Metzger D.E., Neitzel G.P. Measurement in turbulent swirling flow through an abrupt axisymmetric expansion. Am. Inst. Aeronautics Astronautics 1988, 26(6):669-681.
22. Zohir A.E., Aziz Abdel A.A., Habib M.A. Heat transfer characteristics in a sudden expansion pipe equipped with swirl generator. Int. J. Heat Fluid Flow 2011, 32:352-361.
23. Khalil A., Zohir A.E., Farid A.M. Heat transfer characteristics and friction of turbulent swirling air flow through abrupt expansion. Am. J. Sci. Ind. Res. 2010, 1(2):364-374.
24. Baughn J.W., Hoffman M.A., Launder B.E., Takahashi R. Turbulent heat transport in circular ducts with circumferentially-varying heat flux. ASME J. Heat Transfer 1984, 106:64-70.
25. Incropera J., Dewitt M. Fundamentals of Heat Transfer 1981, John Wiley and Sons Inc., New York.
26. Holman J.P. Experimental Method for Engineers 1984, McGraw-Hill Book Company, New York. fourth ed.
27. Zohir A.E. Turbulent heat transfer characteristics and pressure drop in swirling flow at upstream and downstream of an abrupt expansion. Heat Mass Transfer 2012, 48:529-539.