• Fajar Subekti Universitas Brawijaya
  • Slamet Wahyudi Universitas Brawijaya
  • Femiana Gapsari Universitas Brawijaya



Heat Sink, Rippled Fins, Natural Convection, Numerical Investigation


This study aims to determine the effect of the geometry shape of the copper material heat sink fins on the surface temperature distribution of the heat sink. The material used in this research is pure copper, the shape of the heat sink fins is made rippled with the addition of the number of fins 5, 6, and 7 and the input temperature is varied from 40 C to 80 C with airflow variations from 0.2 m/s to 1 m/s. The first step is to create a heat sink design with Autodesk Inventor. Then the plan is simulated with Autodesk CFD to solve the continuity, momentum, turbulence, and energy equations. Based on the method that has been carried out, it is found that the addition of variations in the number of fins affects the decrease in surface temperature. The highest temperature drop on fin 5 ripples is 24.1 C. The heat energy transfer rate increased by 0.4657 W. The convection heat transfer coefficient  increased by 3.47 W/m²C. Nusselt number shows an increase of 271. Fin performance has increased efficiency by  63.4 %, and effectiveness by 1.61. The results of this study are expected to provide practical alternatives that can be widely adopted on a heatsink plate that is very promising for future thermal developments.

Author Biographies

Slamet Wahyudi, Universitas Brawijaya

Lecture and Senior Researcher at Mechanical Engineering Department

Femiana Gapsari, Universitas Brawijaya

Lecture and Senior Researcher at Mechanical Engineering Department


X. Zhang, “Variant Modern Solutions to Central Processing Units’ Overheating Problem and Evaluations on Applications,” in Journal of Physics: Conference Series, Institute of Physics, 2022. doi: 10.1088/1742-6596/2386/1/012038.

Z. Harun, N. Jie Suang, W. M. Faizal W Mahmood, M. Faris Abdullah, and E. Reda Lotfy, “Computational Fluid Dynamics Simulation on the Heat Sink Performance of a Graphics Processing Unit Thermal Management (Simulasi Pengkomputeran Dinamik Bendalir terhadap Penyerapan Haba bagi Pengurusan Terma Unit Pemprosesan Grafik),” Jurnal Kejuruteraan, vol. 31, no. 1, pp. 139–147, 2019, doi: 10.17576/jkukm-2019-31(1)-17.

M. A. Harun and N. A. Che Sidik, “A Review on Development of Liquid Cooling System for Central Processing Unit (CPU),” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 98, no. 113, pp. 98–113, 2020, doi: 10.37934/ARFMTS.78.2.98113.

P. Deb Nath and M. Ariful Islam, “Investigation on the Performance Test on Liquid Cooling System for CPU of Desktop Computer Cost Effective Enhancement Investigation on the Performance Test on Liquid Cooling System for CPU of Desktop Computer Cost Effective Enhancement View project,” in International Conference on Mechanical, Industrial, and Energy Engineering, Khulna, Dec. 2020, pp. 1–7. [Online]. Available:

P. S. Raj and Ch. Sekhar, “Comparative Study on CPU, GPU and TPU,” International Journal of Computer Science and Information Technology for Education, vol. 5, no. 1, pp. 31–38, May 2020, doi: 10.21742/IJCSITE.2020.5.1.04.

J. Cui, J. Liu, J. Huang, and L. T. Yang, “SmartHeating: On the Performance and Lifetime Improvement of Self-Healing SSDs,” IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 40, no. 1, pp. 52–65, Jan. 2021, doi: 10.1109/TCAD.2020.2990896.

C. Zambelli, L. Zuolo, L. Crippa, R. Micheloni, and P. Olivo, “Mitigating self-heating in solid state drives for industrial internet-of-things edge gateways,” Electronics (Switzerland), vol. 9, no. 7, pp. 1–17, Jul. 2020, doi: 10.3390/electronics9071179.

M. Hepisuthar and Priyankasharma, “Comparative Analysis Study on SSD, HDD, and SSHD,” Turkish Journal of Computer and Mathematics Education, vol. 12, no. 3, pp. 3635–3641, 2021.

S. Durgam, B. Ghodake, and S. Mohite, “Numerical Investigation on Heat Sink Material for Temperature Control of Electronics,” in Journal of Physics: Conference Series, Institute of Physics, 2022. doi: 10.1088/1742-6596/2312/1/012016.

H. T. Dhaiban and M. A. Hussein, “The optimal design of heat sinks: A review,” Journal of Applied and Computational Mechanics, vol. 6, no. 4, pp. 1030–1043, Oct. 2020, doi: 10.22055/jacm.2019.14852.

H. Patel and V. K. Matawala, “Performance Evaluation and parametric optimization of a Heat Sink for Cooling of Electronic Devices with Entropy Generation Minimization,” European Journal of Sustainable Development Research, vol. 3, no. 4, Aug. 2019, doi: 10.29333/ejosdr/5896.

A. C. Kusuma, C. Harsito, R. A. Rachmanto, and Z. Arifin, “The Effect of Copper-Aluminium Perforated Heat Sink to Improve Solar Cell Performance,” IOP Conf Ser Mater Sci Eng, vol. 1096, no. 1, pp. 12038–12048, Mar. 2021, doi: 10.1088/1757-899x/1096/1/012048.

M. I. Wani, A. Shinde, and A. S. Shinde, “Analysis of Fins with Varying Shapes for their thermal behavior in heat sink: A Review,” International Journal of Advances in Engineering and Management (IJAEM), vol. 4, no. 8, pp. 1267–1279, Aug. 2022, doi: 10.35629/5252-040812671279.

M. I. Hassan Ali, O. Al-Ketan, N. Baobaid, K. Khan, and R. K. Abu Al-Rub, “A study on the fluid flow and heat transfer for a porous architected heat sink using the idea of CFD modelling,” in ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), American Society of Mechanical Engineers (ASME), 2019. doi: 10.1115/IMECE2019-11498.

H. H. Jasim, “Thermal performance improvement based on the hybrid design of a heat sink,” Engineering Science and Technology, an International Journal, vol. 23, no. 5, pp. 1144–1152, Oct. 2020, doi: 10.1016/j.jestch.2019.10.007.

A. Sathe and S. Sanap, “Free convection heat transfer analysis of slitted fin heat sink of vertical orientation using CFD,” International Journal of Ambient Energy, vol. 43, no. 1, pp. 2662–2672, 2022, doi: 10.1080/01430750.2020.1758785.

I. El Ghandouri, A. El Maakoul, S. Saadeddine, and M. Meziane, “Design and numerical investigations of natural convection heat transfer of a new rippling fin shape,” Appl Therm Eng, vol. 178, Sep. 2020, doi: 10.1016/j.applthermaleng.2020.115670.

M. Mirmanto, I. B. Alit, and Y. Anggani, “Unjuk Kerja Kotak Pendingin Peltier Dengan Unit Pembuang Panas Heat Sink Fin-Fan dan Single Fan Heat Pipe,” Jurnal Rekayasa Mesin, vol. 10, no. 1, pp. 1–8, May 2019, doi: 10.21776/ub.jrm.2019.010.01.1.

Y. A. Çengel, J. M. Cimbala, and R. H. Turner, Fundamentals of thermal-fluid sciences, Fifth Edition. New York: McGraw-Hill Education, 2017.

V. Dang-Thai and T. Dinh-Sy, “Optimizing Dimension of Heat Sink’s Plate Fin with The Effect of Wind Velocity in Site Router Teccomunication System,” Journal of Science and Technology, vol. 12, no. 133, pp. 19–22, 2019.

M. A. Hussein, vinous majeed hameed, and H. T. Dhaiban, “An Implementation Study on Heat Sink with Different Fin Configurations Under Natural Convective Conditions,” SSRN Electronic Journal, vol. 30, pp. 1–11, Nov. 2022, doi: 10.2139/ssrn.3958745.

M. Y. Yazici, M. Avci, and O. Aydin, “Combined effects of inclination angle and fin number on thermal performance of a PCM-based heat sink,” Appl Therm Eng, vol. 159, Aug. 2019, doi: 10.1016/j.applthermaleng.2019.113956.

C. Y. Khor, M. U. Rosli, M. A. M. Nawi, W. C. Kee, and D. Ramdan, “Influence of inlet velocity and heat flux on the thermal characteristic of various heat sink designs using CFD analysis,” in Journal of Physics: Conference Series, IOP Publishing Ltd, Oct. 2021. doi: 10.1088/1742-6596/2051/1/012013.

G. Xu, Y. Huang, B. Dong, Y. Quan, Q. Yin, and J. Chai, “Design and performance evaluation of a novel thin-film heat flux sensor,” Case Studies in Thermal Engineering, vol. 47, Jul. 2023, doi: 10.1016/j.csite.2023.103121.

I. Zahid et al., “Thermal Performance Analysis of Various Heat Sinks Based on Alumina NePCM for Passive Cooling of Electronic Components: An Experimental Study,” Energies (Basel), vol. 15, no. 22, Nov. 2022, doi: 10.3390/en15228416.

T. K. Ibrahim, A. T. Al-Sammarraie, M. S. M. Al-Jethelah, W. H. Al-Doori, M. R. Salimpour, and H. Tao, “The impact of square shape perforations on the enhanced heat transfer from fins: Experimental and numerical study,” International Journal of Thermal Sciences, vol. 149, Mar. 2020, doi: 10.1016/j.ijthermalsci.2019.106144.

M. Bezaatpour and M. Goharkhah, “A novel heat sink design for simultaneous heat transfer enhancement and pressure drop reduction utilizing porous fins and magnetite ferrofluid,” Int J Numer Methods Heat Fluid Flow, vol. 29, no. 9, pp. 3128–3147, Sep. 2019, doi: 10.1108/HFF-12-2018-0810.

M. Rahimie et al., “Graphing Behaviour of Heat Transfer In Terms of Nusselt and Reynolds,” Journal of Computing Research and Innovation (JCRINN), vol. 6, no. 2, pp. 41–52, 2021, [Online]. Available:

V. Uruba, “Reynolds number in laminar flows and in turbulence,” in AIP Conference Proceedings, American Institute of Physics Inc., Jun. 2019. doi: 10.1063/1.5114728.

S. Basu and A. A. M. Holtslag, “Turbulent Prandtl number and characteristic length scales in stably stratified flows: steady-state analytical solutions,” Environmental Fluid Mechanics, vol. 21, no. 6, pp. 1273–1302, Dec. 2021, doi: 10.1007/s10652-021-09820-7.

P. Purwadi, Y. Angga, and S. Mungkasi, “Efficiency and Effectiveness of a Rotation-Shaped Fin Having the Cross-Section Area Dependent on the One-Dimensional Position,” European Alliance for Innovation n.o., Sep. 2021. doi: 10.4108/eai.20-9-2019.2292097.

A. Mostafavi and A. Jain, “Thermal Management Effectiveness and Efficiency of a Fin Surrounded by a Phase Change Material (PCM),” Int J Heat Mass Transf, vol. 191, Aug. 2022, doi: 10.1016/j.ijheatmasstransfer.2022.122630.

Faradiba, “Metode Pengukuran Fisika,” 2020.




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