Pengaruh Tegangan Permukaan Terhadap Tumbukan Multiple Droplets Pada Permukaan Stainles Steel Yang Dipanaskan

Rafil Arizona

Abstract


The present study was conducted to investigate the dynamics of multiple droplets impact under various surface tensions. Here, the ethylene glycol with compositions of  0%, 5%, and 15% were injected through a nozzle into the stainless steel surface as the multiple droplets. The solid surface was heated at the temperatures of 150ºC. The dynamic of multiple droplets have been observed with frame rate of 2000 fps by a high speed camera. A technique of image processing was developed to determine the maximum droplets are spreading ratio. As the result, the surface tension contribute to the maximum spreading ratio significantly. When the droplet surface tension decreases, the maximum spreading ratio increases. The maximum spreading ratio appears when the percentage of the ethylene glycol is 15% at the temperature of 150ºC. From the visual observation, it was shown that a slower emergence of secondary droplets (droplet splashing) was carried out under low surface tension.


Keywords


Multiple Droplets, Spreading Factor, Surface Tension, Stainless Steel

Full Text:

PDF

References


Bernadin, J.D.dan Mudawar,I. (1997). Film Boiling Heat Transfer of Droplet Stream and sprays. International Journal of Heat and Mass Transfer, 40(11), (pp.579-593).

Bernardin, JD, Stebbins, CJ, Mudawar, I (1997), Mapping of impact and heat transfer regimes of water drops impinging on a polished surface, International Journal of Heat Mass Transfer, vol. 40, (pp. 247 – 267).

Chandra, S. dan Avedisian, C.T., (1991). On The Collision Of A Droplet With A Solid Surface. Proceedings Of The Royal Society A: Mathematical, Physical and Engineering Sciences, 431(1884), (pp. 13-41).

Cossali, G.E, Marengo, M, Santini, M, (2005), Secondary atomisation produced by single drop vertical impacts onto heated surfaces, Experimental Thermal and Fluid Science 29 (pp. 937–946).

Deendarlianto, Yasuki, T., Sumitorno, H., Indarto,Widyaparaga, A., Kamal, S., Purnomo, dan Kohno, M. (2014). Effect of Static Contact Angle on The Droplet Dynamics During The Evaporation of a Water Droplet on The Hot Walls. International Journal of Heat and Mass Transfer, 71, (pp.691-705).

Li, R., Ashgriz, N., & Chandra, S. (2010). Maximum spread of droplet on solid surface: low Reynolds and Weber numbers. Journal of Fluids Engineering, 132(6), 061302.

Rioboo, R., Marengo, M., dan Tropea, C. (2002). Outcomes from A Drop Impact on Solid Surfaces. Journal of Fluids Engineering, 132(6), (pp.112–124).

Vishaul Ravi, (2011). Effects on Interfacial and Viscous Properties of Pure Liquids and Polymeric Solutions on Drop Spread Dynamics, Thesis, Department of Mechanical, Industrial and Nuclear Engineering, Anna University, India.

Wibowo, T, Widyatana, A, Kamal, S, Indarto, Deendarlianto (2018), The effect of pressure and frequency on the dynamic behavior and evaporation time of successive water droplets impacting onto hot surface, MATEC Web of Conferences 154, 2018.

Yarin, A. L. (2006a) and (2006b). Drop impact dynamics: Splashing, spreading, receding, bouncing. Annual Review of Fluid Mechanics, 38(1), 159-192.




DOI: https://doi.org/10.18196/jqt.010102

Article Metrics

Abstract view : 55 times
PDF - 108 times

Refbacks

  • There are currently no refbacks.


Quantum Teknika : Jurnal Teknik Mesin Terapan is indexed by :

      

 

Office:

Program Studi D3 Teknik Mesin, UMY

Program Vokasi

Redaksi Quantum Teknika UMY, Jalan Brawijaya, Tamantirto, Kasihan, Bantul, Daerah Istimewa Yogyakarta 55183
Telp: (0274) 387656
Fax: (0274) 387646
WA: +62896-7470-8638 (Mirza Yusuf)
Email: jqt@umy.ac.id

Creative Commons License
Quantum Teknika : Jurnal Teknik Mesin Terapan is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.