Numerical Investigation of the Heat Distribution in an Annular Diffuser Equipped with Twisted Rectangular Hub

Abstract:

Heat distribution and flow behaviors in an annular diffuser with twisted rectangular hub have been numerically simulated in the present work. The study is conducted with three different twist ratios (Y/W = 2.3, 1.5, and 1.16) for Reynolds number 2.5 × 10⁴. The geometry of the annular diffuser with the rectangular hub and the inlet condition are kept constant. The results show that heat distribution increases as twisted ratio (Y/W) decreases.

• Periodical: Applied Mechanics and Materials (Volumes 465-466)
• Pages: 582-586
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.465-466.582
• Online since: December 2013
• Authors: Ehan Sabah Shukri, Wisnoe Wirachman, Ramlan Zailani
• Keywords: Annular Diffuser, CFD, Heat Distribution, Rectangular Hub, Swirl Flow

References

[1] W. Wisnoe, E. S. Shukri, R. Zailani, M. H. Che Mi, M. F. Zakaria, Numerical Investigation of Temperature Distribution in a Diffuser Equipped with Helical Tape, International Conference on Advances in Mechanical Engineering, 393 (2013) 793-798.

DOI: 10.4028/www.scientific.net/amm.393.793

[2] H. Yuxiang, D. Xianhe and Z. Lianshan, 3D Numerical study on compound heat transfer enhancement of converging-diverging tubes equipped with twin twisted tapes, Chinese Journal of Chemical Engineering, 20 (2012) 589-601.

DOI: 10.1016/s1004-9541(11)60223-1

[3] E. S. Shukri, W. Wisnoe, R. Zailani, Numerical Simulation of Temperature Distribution in an Annular Diffuser Equipped With Helical Tape, 2013 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA 2013), in press.

DOI: 10.4028/www.scientific.net/amm.393.793

[4] H. Gül, D. Evinb, Heat transfer enhancement in circular tubes using helical swirl generator insert at the entrance, International Journal of Thermal Sciences, 46 (2007) 1297–1303.

DOI: 10.1016/j.ijthermalsci.2006.12.010

[5] X. Zhang, Z. Liu, W. Liu, Numerical studies on heat transfer and friction factor characteristics of a tube fitted with helical screw-tape without core-rod inserts, International Journal of Heat and Mass Transfer, 60 (2013) 490–498.

DOI: 10.1016/j.ijheatmasstransfer.2013.01.041

[6] W. Wisnoe, N. Ismail, M. F. Remeli, M. F. Zakaria, Experimental investigation on the effect of conical valve shape and swirl generator to the performance of Ranque-Hilsch Vortex Tube, 2013 IEEE Business Engineering and Industrial Applications Colloquium (BEIAC). (2013).

DOI: 10.1109/beiac.2013.6560248

[7] C. S. Yang, D. Z. Jeng, Y. -J. Yang, H. –R. Chen, C. Gau, Experimental study of pre-swirl flow effect on the heat transfer process in the entry region of a convergent pipe, Experimental Thermal and Fluid Science, 35 (2011) 73–81.

DOI: 10.1016/j.expthermflusci.2010.08.008

[8] D. Erdemir, S. Gunes, V. Ozceyhan, N. Altuntop, Numerical Investigation of Heat Transfer Enhancement and Pressure Drop in Heat Exchanger Tube fitted with Dual Twisted Tape Elements, World Scientific and Engineering Academy and Society (WSEAS), (2013).

DOI: 10.1115/ht2012-58078

[9] M. A. Asrol Omar, W. Wisnoe, A. Bakri, Flow Characteristics of a Servco Fume Cupboard, International Conference on Advances in Mechanical Engineering (ICAME) 2013, in press.

DOI: 10.4028/www.scientific.net/amm.393.753

[10] S. Eiamsa-ard, C. Thianpong, P. Eiamsa-ard, Turbulent heat transfer enhancement by counter/co-swirling flow in a tube fitted with twin twisted tapes, Experimental Thermal and Fluid Science, 34 (2010) 53–62.

DOI: 10.1016/j.expthermflusci.2009.09.002

[11] S. Eiamsa-ard, K. Yongsiri, K. Nanan, C. Thianpong, Thermo hydraulic of co/counter swirl flow through a round tube fitted with helical screw tape and twisted tape, Indian Journal of Chemical Technology, 20 (2013) 145-155.

DOI: 10.1134/s0869864316040053

[12] S. Eiamsa-ard, K. Wongcharee, P. Eiamsa-ard, C. Thianpong, Heat transfer enhancement in a tube using delta-winglet twisted tape inserts, Applied Thermal Engineering, 30 (2010) 310–318.

DOI: 10.1016/j.applthermaleng.2009.09.006