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Thermal Analysis Study in an Annular Diffuser Fitted with Different Hub Geometries

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2017

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Abstract (2. Language): 
The enhancement of temperature distribution for turbulent flow through an annular diffuser fitted with helical screw-tape hub and twisted square hub were numerically investigated in the present study. The simulations were performed using three twist ratios y/w of 1, 1.5, and 2 for the helical screw-tape hub and three twist ratios y/w of 1.16, 1.5, and 2.3 for the twisted square hub with Reynolds number 4x104. The annular diffuser geometries and the inlet condition for both hub arrangements were kept constant. The obtained results show that the insertion of the helical screw-tape hub and the twisted square hub will force the temperature to distribute in a helical motion; thereby the turbulence intensity will increase. However the findings showed that the temperature distribution rate was increased with decreasing twist ratio under the same operating conditions. The best temperature distribution was provided by twist ratios y/w = 1 and y/w = 1.16 for the helical screw-tape hub and the twisted square hub, respectively.
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REFERENCES

References: 

[1] W. Wisnoe, E. S. Shukri, R. Zailani, M. H. Che Mi, and M. F. Zakaria, Numerical investigation of temperature distribution in a diffuser equipped with helical tape, Applied Mechanics and Materials, vol. 393, 2013, pp 793-798.
[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, vol. 20, 2012, pp.589-601.
[3] E. S. Shukri, W. Wisnoe, and R. Zailani, Numerical investigation of the heat distribution in an annular diffuser equipped with twisted rectangular hub, Applied Mechanics and Materials, vol. 465-466, 2014, pp. 582-586.
[4] P. K. Sarma, K. Hari Babu, and P.S. Kishore, An experimental study on convective condensation of steam in a horizontal tube at low pressure with twisted tape inserts, proceedings of the 4th WSEAS Int. Conf. on Heat Transfer Thermal Engineering and Environment, Greece, 2006, pp. 269-275.
[5] H. Gül, and D. Evinb, Heat transfer enhancement in circular tubes using helical swirl generator insert at the entrance, International Journal of Thermal Sciences, vol. 46, 2007, pp. 1297–1303.
[6] X. Zhang, Z. Liu, and 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, vol. 60, 2013, pp.490–498.
[7] S. Eiamsa-ard, K. Yongsiri, K.Nanan, and 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, vol. 20, 2013, pp. 145-155.
[8] S. Eiamsa-ard, C. Thianpong, and 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, vol. 34, 2010, pp. 53–62.
[9] A. Escue, and J. Cui, Comparison of turbulence models in simulating swirling pipe flows, Applied Mathematical Modeling, vol. 34, 2010, pp. 2840–2849.
[10] E. S. Shukri, W. Wisnoe, and R. Zailani, Numerical Simulation of Temperature distribution in an annular diffuser equipped with helical tape, Proceeding of 2013 IEEE Symposium on Business, Engineering, and Industrial Applications, 2013, pp. 520-523.
[11] E. S. Shukri, and W. Wisnoe, Numerical study on temperature distribution in an annular diffuser using twisted rectangular hub/pimpled hub as swirl generators, Jurnal Teknologi (Sciences & Engineering), vol. 75:8, 2015, pp. 19–23.
[12] D. Erdemir, S. Gunes, V. Ozceyhan, and 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, ISSN: 2227-4596) 2013, pp.167-172.
[13] K. Nanan a, C. Thianpong b, P. Promvonge b, and S. Eiamsa-ard, Investigation of heat transfer enhancement by perforated helical twisted-tapes, International Communications in Heat and Mass Transfer, vol. 52, 2014, pp.106–112.
[14] M. K. Bhuiya, M. U. Chowdhury, M. Shahabuddin, M. Saha, and L.A. Memone, Thermal characteristics in a heat exchanger tube fitted with triple twisted tape inserts, International Communications in Heat and Mass Transfer, vol. 48, 2013, pp. 124–132
[15] S. Suresh, K.P. Venkitaraj, P. Selvakumar, and M. Chandrasekar, A comparison of thermal characteristics of Al2O3/water and CuO/water nanofluids in transition flow through a straight circular duct fitted with helical screw tape inserts, Experimental Thermal and Fluid Science, vol. 39, 2012, pp. 37–44.
[16] D. Flórez-Orrego, W. Arias, D. López, and H. Velásquez, Experimental and CFD study of a single phase cone-shaped helical coiled heat exchanger: an empirical correlation, Proceedings of the 25th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 2012, pp. 375–394.

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