شبیه‌سازی عددی انتقال حرارت و افت فشار سیال شبه‌پلاستیک در مبدل حرارتی لوله‌ای با نوار تابیده اصلاح‌شده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی مکانیک، موسسه غیرانتفاعی اروندان، خرمشهر، ایران

2 دانشگاه آزاد اسلامی واخد اهواز، دانشکده فنی مهندسی، گروه مهندسی مکانیک

3 مکانیک، دانشگاه صنعتی قوچان، قوچان، ایران

چکیده

در مقاله حاضر، انتقال حرارت و جریان سیال غیرنیوتنی رقیق‌شونده در یک لوله دایره‌ای تحت شار حرارتی ثابت با نوار تابیده اصلاح‌شده به‌صورت عددی در رژیم آرام، پایا و سه‌بعدی موردبررسی قرارگرفته است. برای حل عددی معادلات حاکم، روش حجم محدود استفاده‌شده و در تحلیل وابستگی میان نرخ تنش و برش، مدل پاورلا اصلاح‌شده بکار رفته است. مدل فیزیکی مسئله یک لوله دایره‌ای دارای نوار تابیده استاندارد و کاهش عرض آن، همچنین یک لوله دایره‌ای با نوار تابیده توخالی و افزایش حفره مرکزی نوار است. کاهش عرض نوار در لوله با نوار تابیده ازنظر بازدهی حرارتی، نامناسب ارزیابی شد. برای بهبود بازدهی حرارتی بجای کاهش عرض نوار، از نوار تابیده توخالی با نسبت‌های مختلف استفاده گردید. همچنین نتایج تحلیل نشان می‌دهد که در نسبت حذف (بخش مرکزی نوار نسبت به عرض اولیه) برابر 3/0 می‌توان در سیالات ذکرشده، به ترتیب 95/17، 49/18 و 69/19 درصد افزایش عملکرد حرارتی نسبت به بهترین حالت عملکرد حرارتی نوار تابیده استاندارد (با نسبت کاهش عرض 9/0) به دلیل تولید آشفتگی و چرخش بیشتر در جریان به دست آورد؛ بنابراین حذف از بخش مرکزی نوار تابیده یک روش مناسب برای افزایش عملکرد حرارتی ارزیابی گردید.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Numerical simulation of heat transfer and pressure drop of pseudo-plastic fluid in a pipe heat exchanger equipped with a modified twisted tape

نویسندگان [English]

  • bahador fathipour 1
  • Ashkan Ghafouri 2
  • kazem mohammadzadeh 3
1 Department of Mechanical Engineering, Arvandan Nonprofit Higher Education Institute, khoramshahr, Iran
2 Departmant of Mechanical Engineering, Islamic Azad University Ahvaz branch, Ahvaz, Iran
3 department of energy engineering, quchan univercity of tecnology, quchan, iran, P.O. box 947771-67335
چکیده [English]

The present paper, heat transfer and flow of shear-thinning non-Newtonian fluids in a circular tube under constant heat flux with a modified twisted tape, have been numerically studied in a laminar, steady-state and three-dimensional regime. The finite volume method was used to numerically solve the governing equations, modified power-law model be used to describe the dependence between the stresses and shear rates. The physical model is a circular tube with a standard twisted tape with decreasing its width, also a hollow tape in circular tube with an increase in the central cavity of the tape. The heat transfer and the overall performance are unfavorable by cutting off the tape edge. Instead, a decrease in tape width ratio, hollow tape with different removal ratios was used to improve thermal efficiency. the numerical results show that the removal ratio (hollow width of the tape divided by the initial width) equal to 0.3 in the fluids with behavioral indexes 0.86, 0.55 and 0.41 can cause 17.95%, 18.49% and 19.69% increase in thermal performance compared to the best thermal performance mode, respectively. Therefore, the hollow twisted tape is a promising technique for laminar convective heat transfer enhancement.

کلیدواژه‌ها [English]

  • Pseudo-plastics fluid
  • Modified twisted tape
  • Heat transfer enhancement
  • Pipe heat exchanger
  • Modified power-law
[1] A. Bejan, Convection heat transfer, John wiley & sons, 2013.
[2] T.L. Bergman, F.P. Incropera, A.S. Lavine, D.P. DeWitt, Introduction to heat transfer, John Wiley & Sons, 2011.
[3] S.-N. Li, H.-N. Zhang, X.-B. Li, Q. Li, F.-C. Li, S. Qian, S.W. Joo, Numerical study on the heat transfer performance of non-Newtonian fluid flow in a manifold microchannel heat sink, Applied Thermal Engineering, 115 (2017) 1213-1225.
[4] A. Esmaeilnejad, H. Aminfar, M.S. Neistanak, Numerical investigation of forced convection heat transfer through microchannels with non-Newtonian nanofluids, International Journal of Thermal Sciences, 75 (2014) 76-86.
[5] J.C. Kurnia, A.P. Sasmito, A.S. Mujumdar, Laminar heat transfer performance of power law fluids in coiled square tube with various configurations, International Communications in Heat and Mass Transfer, 57 (2014) 100-108.
[6] P. Li, Y. Xie, D. Zhang, Laminar flow and forced convective heat transfer of shear-thinning power-law fluids in dimpled and protruded microchannels, International Journal of Heat and Mass Transfer, 99 (2016) 372-382.
[7] P. Li, D. Zhang, Y. Xie, G. Xie, Flow structure and heat transfer of non-Newtonian fluids in microchannel heat sinks with dimples and protrusions, Applied Thermal Engineering, 94 (2016) 50-58.
[8] D. Martínez, A. García, J. Solano, A. Viedma, Heat transfer enhancement of laminar and transitional Newtonian and non-Newtonian flows in tubes with wire coil inserts, International Journal of Heat and Mass Transfer, 76 (2014) 540-548.
[9] R.M. Manglik, A.E. Bergles, Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes: Part II—Transition and turbulent flows, Journal of Heat Transfer, 115(4) (1993) 890-896.
[10] R.M. Manglik, A.E. Bergles, Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes: part I—laminar flows, (1993).
[11] P. Promvonge, Thermal performance in circular tube fitted with coiled square wires, Energy Conversion and Management, 49(5) (2008) 980-987.
[12] S. Gunes, V. Ozceyhan, O. Buyukalaca, Heat transfer enhancement in a tube with equilateral triangle cross sectioned coiled wire inserts, Experimental Thermal and Fluid Science, 34(6) (2010) 684-691.
[13] K. Bilen, M. Cetin, H. Gul, T. Balta, The investigation of groove geometry effect on heat transfer for internally grooved tubes, Applied Thermal Engineering, 29(4) (2009) 753-761.
[14] Y. Wang, Y.-L. He, Y.-G. Lei, J. Zhang, Heat transfer and hydrodynamics analysis of a novel dimpled tube, Experimental thermal and fluid science, 34(8) (2010) 1273-1281.
[15] P. Promvonge, S. Skullong, S. Kwankaomeng, C. Thiangpong, Heat transfer in square duct fitted diagonally with angle-finned tape—Part 1: Experimental study, International Communications in Heat and Mass Transfer, 39(5) (2012) 617-624.
[16] S. Skullong, P. Promvonge, Experimental investigation on turbulent convection in solar air heater channel fitted with delta winglet vortex generator, Chinese Journal of Chemical Engineering, 22(1) (2014) 1-10.
[17] S. Liu, M. Sakr, A comprehensive review on passive heat transfer enhancements in pipe exchangers, Renewable and sustainable energy reviews, 19 (2013) 64-81.
[18] M. Ebrahimi-Dehshali, S.Z. Najm-Barzanji, A. Hakkaki-Fard, Pool boiling heat transfer enhancement by twisted-tape fins, Applied Thermal Engineering, 135 (2018) 170-177.
[19] R. Ellahi, A. Zeeshan, F. Hussain, T. Abbas, Thermally charged MHD bi-phase flow coatings with non-Newtonian nanofluid and hafnium particles along slippery walls, Coatings, 9(5) (2019) 300.
[20] R. Ellahi, A. Zeeshan, F. Hussain, T. Abbas, Two-phase couette flow of couple stress fluid with temperature dependent viscosity thermally affected by magnetized moving surface, Symmetry, 11(5) (2019) 647.
[21] S. Ponnada, T. Subrahmanyam, S. Naidu, A comparative study on the thermal performance of water in a circular tube with twisted tapes, perforated twisted tapes and perforated twisted tapes with alternate axis, International Journal of Thermal Sciences, 136 (2019) 530-538.
[22] S. Zhang, L. Lu, C. Dong, S.H. Cha, Performance evaluation of a double-pipe heat exchanger fitted with self-rotating twisted tapes, Applied Thermal Engineering, 158 (2019) 113770.
[23] R. Bhadouriya, A. Agrawal, S. Prabhu, Experimental and numerical study of fluid flow and heat transfer in an annulus of inner twisted square duct and outer circular pipe, International Journal of Thermal Sciences, 94 (2015) 96-109.
[24] X. Tang, X. Dai, D. Zhu, Experimental and numerical investigation of convective heat transfer and fluid flow in twisted spiral tube, International Journal of Heat and Mass Transfer, 90 (2015) 523-541.
[25] M. Khoshvaght-Aliabadi, Z. Arani-Lahtari, Forced convection in twisted minichannel (TMC) with different cross section shapes: a numerical study, Applied Thermal Engineering, 93 (2016) 101-112.
[26] J. Cheng, Z. Qian, Q. Wang, Analysis of heat transfer and flow resistance of twisted oval tube in low Reynolds number flow, International Journal of Heat and Mass Transfer, 109 (2017) 761-777.
[27] W. Yan, X. Gao, W. Xu, C. Ding, Z. Luo, Z. Zhang, Heat transfer performance of epoxy resin Flows in a horizontal twisted tube, Applied Thermal Engineering, 127 (2017) 28-34.
[28] A. Feizabadi, M. Khoshvaght-Aliabadi, A.B. Rahimi, Numerical investigation on Al2O3/water nanofluid flow through twisted-serpentine tube with empirical validation, Applied Thermal Engineering, 137 (2018) 296-309.
[29] M. Khoshvaght-Aliabadi, A. Feizabadi, S. Khaligh, Empirical and numerical assessments on corrugated and twisted channels as two enhanced geometries, International Journal of Mechanical Sciences, 157 (2019) 25-44.
[30] S. Eiamsa-Ard, C. Thianpong, P. Eiamsa-Ard, P. Promvonge, Convective heat transfer in a circular tube with short-length twisted tape insert, International communications in heat and mass transfer, 36(4) (2009) 365-371.
[31] S. Eiamsa-Ard, C. Thianpong, P. Eiamsa-Ard, P. Promvonge, Thermal characteristics in a heat exchanger tube fitted with dual twisted tape elements in tandem, International Communications in Heat and Mass Transfer, 37(1) (2010) 39-46.
[32] P. Murugesan, K. Mayilsamy, S. Suresh, Heat transfer and friction factor studies in a circular tube fitted with twisted tape consisting of wire-nails, Chinese Journal of Chemical Engineering, 18(6) (2010) 1038-1042.
[33] W. Liu, K. Yang, Z. Liu, T. Ming, A. Fan, C. Yang, Mechanism of heat transfer enhancement in the core flow of a tube and its numerical simulation, Open Transport Phenomena Journal, 2 (2010) 9-15.
[34] Y. Wang, M. Hou, X. Deng, L. Li, C. Huang, H. Huang, G. Zhang, C. Chen, W. Huang, Configuration optimization of regularly spaced short-length twisted tape in a circular tube to enhance turbulent heat transfer using CFD modeling, Applied Thermal Engineering, 31(6-7) (2011) 1141-1149.
[35] M.P. Mangtani, K. Watt, Effect Of Twisted-Tape Inserts On Heat Transfer In A Tube—A Review, Int. J. Mech. Eng. & Rob. Res., 4(2) (2015).
[36] A. Savekar, D. Jangid, M. Gurjar, V. Patil, C. Sewatkar, Analysis of Heat Transfer in Pipe With Twisted Tape Inserts, in: Second International Conference on Fluid Flow, Heat and Mass Transfer, Ottawa, ON, Canada, Apr, 2015.
[37] S. Abolarin, M. Everts, J.P. Meyer, Heat transfer and pressure drop characteristics of alternating clockwise and counter clockwise twisted tape inserts in the transitional flow regime, International Journal of Heat and Mass Transfer, 133 (2019) 203-217.
[38] J.P. Meyer, S. Abolarin, Heat transfer and pressure drop in the transitional flow regime for a smooth circular tube with twisted tape inserts and a square-edged inlet, International Journal of Heat and Mass Transfer, 117 (2018) 11-29.
[39] M.H. Esfe, H. Mazaheri, S.S. Mirzaei, E. Kashi, M. Kazemi, M. Afrand, Effects of twisted tapes on thermal performance of tri-lobed tube: an applicable numerical study, Applied Thermal Engineering, 144 (2018) 512-521.
[40] Y. Hong, J. Du, Q. Li, T. Xu, W. Li, Thermal-hydraulic performances in multiple twisted tapes inserted sinusoidal rib tube heat exchangers for exhaust gas heat recovery applications, Energy conversion and management, 185 (2019) 271-290.
[41] P. Acharya, R. Mamadapur, S. Dalvi, Effect of Twisted Tape insert on Heat Transfer in Tube, International Journal of Recent Advances in Engineering & Technology (IJRAET) 4(8) (2016).
[42] M.M. Bhuyan, U.K. Deb, M. Shahriar, S. Acherjee, Simulation of Heat Transfer in a Tubular Pipe Using Different Twisted Tape Inserts, Open Journal of Fluid Dynamics, 7(03) (2017) 397.
[43] P. Murugesan, K. Mayilsamy, S. Suresh, P. Srinivasan, Heat transfer and pressure drop characteristics in a circular tube fitted with and without V-cut twisted tape insert, International Communications in Heat and Mass Transfer, 38(3) (2011) 329-334.
[44] A. Hasanpour, M. Farhadi, K. Sedighi, Experimental heat transfer and pressure drop study on typical, perforated, V-cut and U-cut twisted tapes in a helically corrugated heat exchanger, International Communications in Heat and Mass Transfer, 71 (2016) 126-136.
[45] A. Saysroy, S. Eiamsa-ard, Periodically fully-developed heat and fluid flow behaviors in a turbulent tube flow with square-cut twisted tape inserts, Applied Thermal Engineering, 112 (2017) 895-910.
[46] S. Eiamsa-ard, P. Seemawute, K. Wongcharee, Influences of peripherally-cut twisted tape insert on heat transfer and thermal performance characteristics in laminar and turbulent tube flows, Experimental Thermal and Fluid Science, 34(6) (2010) 711-719.
[47] M. Nakhchi, J. Esfahani, Numerical investigation of rectangular-cut twisted tape insert on performance improvement of heat exchangers, International Journal of Thermal Sciences, 138 (2019) 75-83.
[48] K. Ruengpayungsak, M. Kumar, V. Chuwattanakul, S. Eiamsa-ard, Experimental Study of the Effects of Inclusion of Rectangular-Cut Twisted Tapes on Heat Transfer and Pressure Drop in a Round Tube, Arabian Journal for Science and Engineering, 44(12) (2019) 10303-10312.
[49] Y. He, L. Liu, P. Li, L. Ma, Experimental study on heat transfer enhancement characteristics of tube with cross hollow twisted tape inserts, Applied Thermal Engineering, 131 (2018) 743-749.
[50] K.I. Patil, D. S.Mayadevi, D. S.V.Anekar, G.S.Kamble, D.G. B.S., laminar flow heat transfer augmenation by using inserts, International Journal of Advance Engineering and Research Development, 5(2) (2018).
[51] G. Biswas, K. Torii, D. Fujii, K. Nishino, Numerical and experimental determination of flow structure and heat transfer effects of longitudinal vortices in a channel flow, International Journal of Heat and Mass Transfer, 39(16) (1996) 3441-3451.
[52] A. Ebrahimi, S. Kheradmand, Numerical simulation of performance augmentation in a plate fin heat exchanger using winglet type vortex generators, International Journal of Mechanical Engineering and Mechatronics, 1(2) (2012) 109-121.
[53] S. Ferrouillat, P. Tochon, C. Garnier, H. Peerhossaini, Intensification of heat-transfer and mixing in multifunctional heat exchangers by artificially generated streamwise vorticity, Applied Thermal Engineering, 26(16) (2006) 1820-1829.
[54] A. Ebrahimi, B. Naranjani, S. Milani, F.D. Javan, Laminar convective heat transfer of shear-thinning liquids in rectangular channels with longitudinal vortex generators, Chemical Engineering Science, 173 (2017) 264-274.
[55] R. Bhatia, Effect of molecular mass, concentration and temperature on the rheological properties of non-newtonian aqueous polymeric solutions, University of Cincinnati, 2011.
[56] A. Metzner, J. Reed, Flow of non‐newtonian fluids—correlation of the laminar, transition, and turbulent‐flow regions, Aiche journal, 1(4) (1955) 434-440.
[57] S.C. Siw, M.K. Chyu, T.I.-P. Shih, M.A. Alvin, Effects of pin detached space on heat transfer and pin-fin arrays, Journal of Heat Transfer, 134(8) (2012) 081902.
[58] G. Xie, J. Liu, W. Zhang, G. Lorenzini, C. Biserni, Numerical prediction of flow structure and heat transfer in square channels with dimples combined with secondary half-size dimples/protrusions, Numerical Heat Transfer, Part A: Applications, 65(4) (2014) 327-356.
[59] A. Ebrahimi, E. Roohi, S. Kheradmand, Numerical study of liquid flow and heat transfer in rectangular microchannel with longitudinal vortex generators, Applied Thermal Engineering, 78 (2015) 576-583.
[60] A. Ebrahimi, B. Naranjani, An investigation on thermo-hydraulic performance of a flat-plate channel with pyramidal protrusions, Applied Thermal Engineering, 106 (2016) 316-324.
[61] N. Piriyarungrod, M. Kumar, C. Thianpong, M. Pimsarn, V. Chuwattanakul, S. Eiamsa-ard, Intensification of thermo-hydraulic performance in heat exchanger tube inserted with multiple twisted-tapes, Applied Thermal Engineering, 136 (2018) 516-530.
[62] P. Samruaisin, S. Kunlabud, K. Kunnarak, V. Chuwattanakul, S. Eiamsa-ard, Intensification of convective heat transfer and heat exchanger performance by the combined influence of a twisted tube and twisted tape, Case Studies in Thermal Engineering, 14 (2019) 100489.
[63] S. Zhang, L. Lu, C. Dong, S.H. Cha, Thermal characteristics of perforated self-rotating twisted tapes in a double-pipe heat exchanger, Applied Thermal Engineering, 162 (2019) 114296.
[64] E.Y. Rios-Iribe, M.E. Cervantes-Gaxiola, E. Rubio-Castro, J.M. Ponce-Ortega, M.D. González-Llanes, C. Reyes-Moreno, O.M. Hernández-Calderón, Heat transfer analysis of a non-Newtonian fluid flowing through a circular tube with twisted tape inserts, Applied Thermal Engineering, 84 (2015) 225-236.
[65] S.N. Sarada, A.S.R. Raju, K.K. Radha, L.S. Sunder, Enhancement of heat transfer using varying width twisted tape inserts, International Journal of Engineering, Science and Technology, 2(6) (2010).
[66] 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.
[67] O.A. Akbari, H.H. Afrouzi, A. Marzban, D. Toghraie, H. Malekzade, A. Arabpour, Investigation of volume fraction of nanoparticles effect and aspect ratio of the twisted tape in the tube, Journal of Thermal Analysis and Calorimetry, 129(3) (2017) 1911-1922.
[68] S. Alzahrani, S. Usman, CFD simulations of the effect of in-tube twisted tape design on heat transfer and pressure drop in natural circulation, Thermal Science and Engineering Progress, 11 (2019) 325-333.
[69] S. Kumar, P. Dinesha, A. Narayanan, R. Nanda, Parametric study on the heat transfer characteristics in a circular tube with helical tape insert under laminar flow conditions, Heat Transfer—Asian Research, (2019).