Study on local drag reduction effects of wedge-shaped components in elbow and T-junction close-coupled pipes

Building Simulation

Volumn 7, Issue 2, 2014, Pages 175-184

  Li, Angui ^a   Chen, Xi ^a   Chen, Lei ^b   Gao, Ran ^a  

^a XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY   (China)

^b China Railway Tunnel Survey Design and Institute Co Ltd   (China)

Author keywords

CFD; drag reduction; elbow and T junction close coupled pipe; SST k model

Indexed keywords

EID: 84891057360     PISSN: 19963599     EISSN: 19968744     Source Type: Journal    
DOI: 10.1007/s12273-013-0113-z     Document Type: Article

References (24)

1. Bassett MD, Winterbone DE, Pearson RJ (2001). Calculation of steady flow pressure loss coefficients for pipe junctions. Journal of Mechanical Engineering Science, 265: 861-881.
2. Balachandran P (2011). Engineering Fluid Mechanics. New Delhi: Prentice Hall of India.
3. Freeman JR (1941). Experiments upon the Flow of Water in Pipe and Pipe Fittings. New York: American Society of Mechanical Engineers.
4. Fluent (2006). FLUENT User's Guide, Version 6. 3. Fluent Inc.
5. Gan G, Riffat SB (1995). k-factors for HVAC ducts: Numerical and experimental determination. Building Service Engineering Research and Technology, 16: 133-139.
6. He YY, Zhao YJ, Sun SQ, Mao SM (2004). Interaction of local loss between bends in pipe line. Journal of Hydraulic Engineering, 35(2): 17-20. (in Chinese).
7. Hui RN (2005). Study of Pressure Loss Coefficient in HVAC Fittings. Master Thesis, Xi'an University of Architecture and Technology, China. (in Chinese).
8. Hoffmann M, Schlüter M, Räbiger N (2006). Experimental investigation of liquid-liquid mixing in T-shaped micro-mixers using μ-LIF and μ-PIV. Chemical Engineering Science. 61: 2968-2976.
9. Koch P (2006). The influence of Reynolds Number and size effects on pressure loss factors of ductwork components. Building Service Engineering Research and Technology, 27: 261-283.
10. Li T (2005). Numerical and Experimental Study of Pressure Loss Coefficient in HVAC Fittings. Master Thesis, Xi'an University of Architecture and Technology, China.
11. Lu Y (2008). Practical Heating and Air Conditioning Design Manual. Beijing: China Building Industry Press. (in Chinese).
12. Miller DS (1971). Internal Flow: A Guide to Losses in Pipe and Duct Systems. Cranfield, UK: British Hydromechanics Research Association.
13. Mumma AS, Mahank TA, Yu-Pei, K (1998). Analytical determination of duct fitting loss coefficients. Applied Energy, 61: 229-247.
14. Mylaram NK, Idem S (2005). Pressure loss coefficient measurement of two close-coupled HVAC elbows. HVAC&R Research, 11: 133-146.
15. Pan G, Meng H (2001). Experimental study of turbulent mixing in a tee mixer using PIV and PLIF. AIChE Journal, 47: 2653-2665.
16. Rahmeyer WJ (1999a). Pressure loss coefficients of threaded and forged weld pipe fittings for ells, reducing ells and pipe reducers. ASHRAE Transactions, 105(2): 334-354.
17. Rahmeyer WJ (1999b). Pressure loss coefficients of threaded and forged weld pipe Tees. ASHRAE Transactions, 105(2): 355-385.
18. Rahmeyer WJ (2002). Pressure loss coefficients for close-coupled pipe ells. ASHRAE Transactions, 108(1): 390-406.
19. Shao L, Riffat SB (1995). Accuracy of CFD for predicting pressure losses in HVAC duct fittings. Applied Energy, 51: 233-248.
20. Sethuraman S (2000). Laboratory Study to Determine the Loss Coefficient of Two Close-Coupled Fittings. Master Thesis, Tennessee Technological University, USA.
21. Sami S, Cui J (2004). Numerical study of pressure losses in close-coupled fittings. HVAR&R Research, 10: 539-552.
22. Townsend B, Khodabakhsh F, Idem S (1996a). Loss coefficient measurements in divided-flow flat oval fittings. ASHRAE Transactions, 102(2): 151-158.
23. Townsend B, Khodabakhsh F, Idem S (1996b). Loss coefficient measurements for flat oval elbows and transitions. ASHRAE Transactions, 102(2): 159-169.
24. Zhang XJ (2008). Study on the Fluid Flow in Elbow, Junction Closed-Coupled Pipes by 2DPIV and CFD. Master Thesis, Xi'an University of Architecture and Technology, China. (in Chinese).