Citation:
Fifi N.M. Elwekeel,Qun Zheng and Antar M.M. Abdala.Heat Transfer and Friction Characteristics in Rectangular Channel using Different Coolants[J].Journal of Marine Science and Application,2013,(4):484-492.[doi:10.1007/s11804-013-1220-z]
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Heat Transfer and Friction Characteristics in Rectangular Channel using Different Coolants
Fifi N.M. Elwekeel,Qun Zheng and Antar M.M. Abdala.Heat Transfer and Friction Characteristics in Rectangular Channel using Different Coolants[J].Journal of Marine Science and Application,2013,(4):484-492.[doi:10.1007/s11804-013-1220-z]
Info
- Title:
- Heat Transfer and Friction Characteristics in Rectangular Channel using Different Coolants
- Author(s):
- Fifi N.M. Elwekeel; Qun Zheng and Antar M.M. Abdala
- Affilations:
- Keywords:
- heat transfer; rib roughness; mist; rectangular channel; shear stress transport
- DOI:
- 10.1007/s11804-013-1220-z
- Abstract:
- Several industrial applications such as electronic devices, heat exchangers, gas turbine blades, etc. need cooling processes. The internal cooling technique is proper for some applications. In the present work, computational simulations were made using ANSYS CFX to predict the improvements of internal heat transfer in the rectangular ribbed channel using different coolants. Several coolants such as air, steam, air/mist and steam/mist were investigated. The shear stress transport model (SST) is selected by comparing the standard k-ω and Omega Reynolds Stress (ωRS) turbulence models with experimental results.The results indicate that the heat transfer coefficients are enhanced in the ribbed channel while injecting small amounts of mist. The heat transfer coefficients of air/mist, steam and steam/mist increase by 12.5%, 49.5% and 107% over that of air, respectively. Furthermore, in comparison to air, the air/mist heat transfer coefficient enhances by about 1.05 to 1.14 times when the mist mass fraction increases from 2% to 8%, respectively. The steam/mist heat transfer coefficient increases by about 1.12 to 1.27 times higher than that of steam over the considered range of mist mass fraction.
References:
Albeirutty MH, Algahamdi AS, Najjar Y (2004). Heat transfer analysis for a multistage gas turbine using different blade cooling schemes. Appl. Therm. Eng., 24, 563-577.
Alhajeri M (2012). Computational investigation of flow and heat transfer in rectangular duct with ribs mounted in a staggered arrangement. Int. J. of Thermal and Environmental Engineering, 4, 81-88.
Chandra PR, Alexander CR, Han JC (2003). Heat transfer and friction behaviors in rectangular channels with varying number of ribbed walls. Int. J. Heat Mass Transfer, 46, 481-495.
Chaube A, Sahoo PK, Solanki SC (2006). Analysis of heat transfer augmentation and flow characteristics due to rib roughness over Absorber plate of a solar air heater. Renew Energ., 31, 317-331.
Dhanasekaran TS, Wang T (2011). Mist/air cooling in a two- pass rectangular rotating channel with 45-deg angeled rib turbulators. ASME, Paper GT2011-45954.
Guo T, Wang T, Gaddis JL (2000). Mist/steam cooling in heated horizontal tube- Part 1: Experimental system. ASME J. Turbomachinary, 122, 360-365.
Guo T, Wang T, Gaddis JL (2000). Mist/steam cooling in heated horizontal tube- Part 2: Results and modeling. ASME J. Turbomachinary, 122, 366-374.
Haasenritter A, Amro M, Weigand B (2002). An experimental and numerical study of the transfer performance of sharp- edged and rounded ribs in square ducts. The 9th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, 10-14.
Han JC, Park JS (1988). Developing heat transfer in rectangular channels with rib turbulators. Int. J. Heat Mass Transfer, 31, 183-195.
Kanani H, Shams M, Ebrahimi R (2008). Numerical modeling of film cooling with and without mist injection. Heat Mass Transfer, 45, 727-741.
Kumari N, Bahadur V, Hodes M, Salamon T, Kolodner P (2010). Analysis of evaporation mist flow for enhanced convective heat transfer. Int. J. Heat Mass Transfer, 53, 3346-3356.
Lanjewar A, Bhagoria JL, Sarviya RM (2011). Heat transfer and friction in solar air heater duct with w-shaped rib roughness on absorber plate. Energy, 36, 4531-4541.
Lu B, Jiang PX (2006). Experimental and numerical investigation of convection heat transfer in a rectangular channel with angled ribs. Exp. Therm. Fluid Sci., 30, 513-521.
Najjar YSH, Alghamdi AS, Al-Beirutty MH (2004). Comparative performance of combined gas turbine systems under three different blade cooling schemes. Appl. Therm. Eng., 24, 1919-1934.
Novak N, Sadowski DL, Schoonover KG, Abdel-Khalik SI, Ghiaasiaan SM (2008). Heat transfer in two-component internal mist cooling, part I. experimental investigation. Nucl. Eng. Des., 238, 2341-2350.
Oisin FP Lyons, Tim P, Gerard B, Darina BM, (2008). Water mist/ air jet cooling of a heated plate with variable droplet size. ThETA 2, Cairo, Egypt, Dec. 17-20th.
Pakhomov MA, Terekhov VI (2011). Enhancement of turbulent heat transfer during interaction of an impinging axisymmetric mist jet with a target. J. Appl. Mech. Tech. Phys., 52, 96-106.
Salameh T, Sunden B (2010). An experimental study of heat transfer and pressure drop on the bend surface of a u-duct. ASME, Paper GT2010-22139.
Sanjay SO, Prasad BN, (2008). Influence of different means of turbine blade cooling on the thermodynamic performance of combined cycle. Appl. Therm. Eng., 28, 2315-2326.
Sanjay SO, Prasad BN (2009). Comparative performance analysis of cogeneration gas turbine cycle for different blade cooling means. Int. J. Therm. Sci., 48, 1432-1440.
Shokouhmand H, Ghaffari S (2010). Thermal Analysis of cooling process of a high- temperature vertical hollow cylinder using a water- air spray. World Congress on Engineering, London, UK.
Shui L, Gao J, Xu L, Wang X (2010). Numerical investigation of heat transfer and flow characteristics in a steam- cooled square ribbed duct. ASME, paper GT2010-22407.
Sikalo S, Delalic N, Ganic EN (2002). Hydrodynamics and Heat Transfer Investigation of Air-Water Dispersed Flow. Exp. Therm Fluid Sci., 25, 511-521.
Srinath VE, Han JC (1997). Detailed heat transfer distributions in two- pass square channels with rib turbulators. Int. J. Heat Mass Transfer, 40, 2525-2537.
Tanda G, Cavallero D (2002). Heat transfer coefficient measurements in ribbed channels using liquid crystal thermography. The 10th International Symposium on Flow Visualization, Kyoto, Japan, August 26-29, 2002
Tanda G (2004). Heat transfer in rectangular channels with transverse and v-shape broken ribs. Int. J. Heat Mass Transfer, 47, 229-243.
Taslim ME, Liu H (2005). A combined numerical and experimental study of heat transfer in roughened square channel with 45o ribs. Int. J. Rotating Mach., 1, 60-66.
Wang L, Sunden B (2007). Experimental investigation of local heat transfer in a square duct with various shaped ribs. Heat Mass Transfer., 43, 759-766.
Wang X, Wang W, Chou L, Han Y, Xu L, Shui L (2010). Flow and heat transfer of air and steam in internal cooling passages of turbine blade. ASME, Paper GT2010-22180.
Watchers LHJ, Westerling NA (1966). The heat transfer from a hot wall to impinging water drops in the spheriodal state. Chem. Eng. Sci., 21, 1047-1056.
Memo
- Memo:
- Supported by the China Scholarship Council (CSC) under Grant No. 2011BSZF88.
