[1] K. Kamani, R. Rafai. "Investigation of heat transfer and laminar flow of nanofluids from the perspective of the second law of thermodynamics in a counterflow heat exchanger." Modeling in Engineering 13, no. 41(2015): 47-57. (in Persian)
[2] M. Ziaei-Rad, M. Beigi Harchegani. "Numerical study of heat transfer and pressure drop in forced flow of nanofluid inside a toothed tube." Modeling in Engineering 15, no. 49 (2017): 65-76. (in Persian)
[3] M. Dehghan, N. Tirandaz, M.S. Valipour. "Spiral two-tube heat exchanger filled with porous medium under asymmetric heat flux." Modeling in Engineering 16, no. 52 (2018): 409-418. (in Persian)
[4] A. Nematpour Keshtali, M. Sheikholsalami. "Numerical investigation of freezing behavior inside a three-pipe heat exchanger containing phase change materials using fins." Modeling in Engineering 17, no. 57 (2019): 327-338. (in Persian)
[5] M. Omidi, M. Farhadi, and M. Jafari. "A comprehensive review on double pipe heat exchangers." Applied Thermal Engineering 110 (2017): 1075-1090.
[6] B. Samutpraphut, S. Eiamsa-ard, V. Chuwattanakul, C. Thianpong, N. Maruyama, and M. Hirota. "Influence of sawtooth twisted tape on thermal enhancement of heat exchanger tube." Energy Reports 9 (2023): 696-703.
[7] N.F. Hamza, and S. Aljabair. "Numerical and experimental investigation of heat transfer enhancement by hybrid nanofluid and twisted tape." Engineering and Technology Journal 41, no. 1 (2023): 69-85.
[8] L.S. Sundar. "Heat transfer, friction factor and exergy efficiency analysis of nanodiamond-Fe3O4/water hybrid nanofluids in a tube with twisted tape inserts." Ain Shams Engineering Journal 14, no. 9 (2023): 102068.
[9] A. Kumar, M. Ashraf Ali, R. Maithani, N. Kumar Gupta, S. Sharma, S. Kumar, L. Sharma et al. "Experimental analysis of heat exchanger using perforated conical rings, twisted tape inserts and CuO/H2O nanofluids." Case Studies in Thermal Engineering 49 (2023): 103255.
[10] V. Chuwattanakul, K. Wongcharee, P. Ketain, S. Chamoli, C. Thianpong, and S. Eiamsa-ard. "Aerothermal performance evaluation of a tube mounted with broken V-ribbed twisted tape: effect of forward/backward arrangement." Case Studies in Thermal Engineering 41 (2023): 102642.
[11] M.M. Soltani, M. Gorji-Bandpy, A. Vaisi, and R. Moosavi, "Heat transfer augmentation in a double-pipe heat exchanger with dimpled twisted tape inserts: an experimental study." Heat and Mass Transfer (2022): 1-16.
[12] P.B. Dehankar, K. Joshi, V.A. Bhosale, and R.N. Mulik. "Assessment of twist tape thermal performance in heat transfer passive augmentation technique." Beni-Suef University Journal of Basic and Applied Sciences 11, no. 1 (2022): 1-19.
[13] B.K. Dandoutiya and A. Kumar. "W-cut twisted tape's effect on the thermal performance of a double pipe heat exchanger: a numerical study." Case Studies in Thermal Engineering 34 (2022): 102031.
[14] M. Noorbakhsh, S.S.M. Ajarostaghi, M. Zaboli, and B. Kiani. "Thermal analysis of nanofluids flow in a double pipe heat exchanger with twisted tapes insert in both sides." Journal of Thermal Analysis and Calorimetry (2022): 1-12.
[15] S.K. Singh and J. Sarkar. "Improving hydrothermal performance of double-tube heat exchanger with modified twisted tape inserts using hybrid nanofluid." Journal of Thermal Analysis and Calorimetry 143, no. 6 (2021): 4287-4298
[16] M. A. Hassan, M. A. Kassem, and A. Kaood, "Numerical investigation and multi-criteria optimization of the thermal–hydraulic characteristics of turbulent flow in conical tubes fitted with twisted tape insert," Journal of Thermal Analysis and Calorimetry, pp. 1-22, 2021.
[17] J. Moya-Rico, A. Molina, J. Belmonte, J. C. Tendero, and J. Almendros-Ibáñez. "Experimental characterization of a double tube heat exchanger with inserted twisted tape elements." Applied Thermal Engineering 174 (2020): 115234.
[18] A. Vaisi, R. Moosavi, M. Lashkari, and M.M. Soltani. "Experimental investigation of perforated twisted tapes turbulator on thermal performance in double pipe heat exchangers." Chemical Engineering and Processing-Process Intensification 154 (2020): 108028.
[19] K. Sivakumar, K. Rajan, T. Mohankumar, and P. Naveenchnadran. "Analysis of heat transfer characteristics with triangular cut twisted tape (TCTT) and circular cut twisted tape (CCTT) inserts." Materials Today: Proceedings 22 (2020): 375-382.
[20] S. Sharma, A. Kumar, and R. Maithani. "Influence of twisted tape with collective protruded rib parameters of thermal–hydraulic performance of Al2O3-H2O nanofluid flow in heat exchanger tube." Materials Today: Proceedings 50 (2022): 1129-1133.
[21] S.K. Singh and A. Kumar. "Experimental study of heat transfer enhancement from dimpled twisted tape in double pipe heat exchanger." Int. J. Mech. Prod. Eng. Res. Dev 10 (2020): 469-482.
[22] S. Zhang, L. Lu, C. Dong, and S.H. Cha. "Performance evaluation of a double-pipe heat exchanger fitted with self-rotating twisted tapes." Applied Thermal Engineering 158 (2019): 113770.
[23] S. Zhang, L. Lu, C. Dong, and S.H. Cha. "Thermal characteristics of perforated self-rotating twisted tapes in a double-pipe heat exchanger." Applied Thermal Engineering 162 (2019): 114296.
[24] C. Qi, G. Wang, Y. Yan, S. Mei, and T. Luo. "Effect of rotating twisted tape on thermo-hydraulic performances of nanofluids in heat-exchanger systems." Energy Conversion and Management 166 (2018): 744-757.
[25] N.R. Kumar, P. Bhramara, A. Kirubeil, L.S. Sundar, M.K. Singh, and A.C. Sousa. "Effect of twisted tape inserts on heat transfer, friction factor of Fe3O4 nanofluids flow in a double pipe U-bend heat exchanger." International Communications in Heat and Mass Transfer 95 (2018): 53-62.
[26] S. Eiamsa-ard, C. Thianpong, and P. Promvonge. "Experimental investigation of heat transfer and flow friction in a circular tube fitted with regularly spaced twisted tape elements." International Communications in Heat and Mass Transfer 33, no. 10 (2006): 1225-1233.
[27] Lienhard, John H. A heat transfer textbook. Phlogistron, 2005.
[28] ANSYS Fluent Theory Guide 2015.
[29] M.M. Elias, I.M. Shahrul, I.M. Mahbubul, R. Saidur, and N.A. Rahim. "Effect of different nanoparticle shapes on shell and tube heat exchanger using different baffle angles and operated with nanofluid." International Journal of Heat and Mass Transfer 70 (2014): 289-297.
)