Simulasi numerik kombinasi perpindahan panas konveksi alami dan radiasi pada square cavity

Authors

  • Syamsuri Syamsuri Institut Teknologi Adhi Tama Surabaya
  • Suheni Suheni Institut Teknologi Adhi Tama Surabaya
  • HS Maulana Institut Teknologi Adhi Tama Surabaya
  • Muhammad Syafii Institut Teknologi Adhi Tama Surabaya

DOI:

https://doi.org/10.24127/trb.v8i2.1070

Abstract

Natural convection is very important in some cases such as glass windows, solar collectors, electronic measuring devices (cooling devices for electronic instruments) and building materials that use insulation. In this research, will be seen the phenomenon of natural convection that occurs in square cavity. The method used for simulation is computational fluid dynamics or CFD. The model used is the 2D cavity model. In this simulation the value of Rayleigh Number (Ra) was varied i.e. 103,104,105 and 106. From this research, it is found that the higher the value of Ra in cavity, the higher the value of the average Nusselt Number (ð‘Ì…ð‘¢ ) on the wall which has a high temperature. Ra = 103 so that ð‘Ì…ð‘¢ = 1.17. Ra =104, so that ð‘Ì…ð‘¢ = 2.2. Ra = 105, so that ð‘Ì…ð‘¢ = 4.47. Ra = 106, and then so that ð‘Ì…ð‘¢ = 8.95. Based on the value and contour of the flow the smaller the Ra value in the square cavity, the isothermal line phenomenon that appears will be more vertical. The greater the Ra value in the cavity, the contour of the stream function will change to an ellipse and finally two vortices will appear.
Keywords: Numerical simulation, konveksi, radiasi, square cavity.

References

[1]. Syamsuri, Hasan Syafik, M., Iswanto, Y.P. 2018. Study the effect of angle of attack on flow characteristics at racing bike helmet using CFD, MATEC Web of Conferences 204, 06001.
[2]. Syamsuri, N.I. Riani .2017. Numerical cooling simulation on laptop heat sinks with variations of different airflow speeds, VANOS Journal of Mechanical Engineering Education Vol.2, No.2, December 2017, Page.97-104.
[3]. Syamsuri, Chern, MJ. & Vaziri, N. 2019 . Effect of Porous Media on Hydraulic Jump Characteristics by Using Smooth Particle Hydrodynamics Method, Int J Civ Eng (2019). https://doi.org/10.1007/s40999-019-00465-8.
[4]. Reyad Omari .2013. CFD simulations of lid driven cavity flow at moderate reynolds number, European Scientific Journal, vol.9, No.15, pp.22-35.
[5]. Muthuvel, N. Prakash, C. Manikandan, J. Godwin John. 2014. Numerical simulation of flow inside the square cavity, International Journal of Technical Research and Applications, Vol.2, Issue 3, pp. 87-94.
[6]. M. Ghalambaz, M. Sabour, I. Pop. 2016 .Free convection in a square cavity filled by a porous medium saturated by a nanofluid: Viscous dissipation and radiation effects, Engineering Science and Technology, an International Journal 19, pp.1244-1253.
[7]. K. Lari, M. Baneshib, S.A. Gandjalikhan Nassaba, A. Komiyab, S. Maruyama. 2011. Combined heat transfer of radiation and natural convection in a square cavitycontaining participating gases, International Journal of Heat and Mass Transfer 54, pp.5087–5099.
[8]. Firman Tuakia. 2008. Dasar-Dasar CFD Menggunakan Fluent, Cet. 1. Bandung: Informatika.

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Published

02-07-2020

Issue

Vol. 8 No. 2 (2019): Jurnal Turbo Desember 2019

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Articles

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