Penggunaan Hukum Hagen-Poiseuille dalam Penentuan Koefisien Viskositas Zat Cair dengan Prinsip Kontrol Berat Berbantuan Software Logger Pro

Lia Adini, Okimustava Okimustava

Abstract


Pengukuran koefisien viskositas zat cair menggunakan hukum Hagen-Poiseuille dengan metode Microcomputer Based Laboratory telah dilakukan. Viskositas merupakan ukuran penolakan fluida terhadap perubahan bentuk di bawah tekanan shear. Hukum Hagen-Poiseuille digunakan dalam penelitian ini karena zat cair yang digunakan merupakan zat cair Newtonian. Tangki viskometer kapiler yang dikaitkan ke sensor gaya diisi zat cair untuk kemudian dialirkan keluar melalui pipa kapiler dengan panjang (9,8±0,09)10-2 m dan diameter dalam (2,1620±0,0096) 10-3 m. Data penurunan massa zat cair direkam menggunakan sensor gaya buatan Vernier Tecnology dan analisis fitting data menggunakan software Logger Pro. Nilai karakteristik waktu diperoleh dari hasil fitting data digunakan untuk perhitungan koefisien viskositas zat cair menggunakan hukum Hagen-Poiseuille. Dari percobaan ini diperoleh nilai koefisien viskositas air sebesar (1,063±0,113) mPa.s yang sesuai dengan nilai acuan teori yaitu 1,002 mPa.s, oli SAE 10W-30 sebesar (79,01±8,90) Pa.s sesuai dengan nilai acuan teori 76,8 Pa.s, dan gliserin sebesar (593,4±56,7) mPa.s sesuai dengan nilai acuan teori 612 mPa.s.


Measurement of liquid viscosity coefficient using Hagen-Poiseuille law with Microcomputer-Based Laboratory method has been done. Viscosity is the fluid declination measure of form changes under sheer pressure. Hagen-Poiseuille law is used in this study because the liquid used is a Newtonian liquid. Capillary viscometer tanks attached to force sensors are filled with liquid to be streamed out through capillary tubes of length (9.8 ± 0.09)10-2 m and the inner diameter (2.1620 ± 0.0096)10-3 m. Data on the mass degradation of liquids was recorded using a Vernier Technology force sensor while the data fitting analysis using Logger Pro software. The time characteristic values which obtained from the data fittings are used in the calculation of the liquid viscosity coefficient using Hagen-Poiseuille law. From this experiment, the obtained water viscosity coefficient value is (1.063± 0.113) mPa.s corresponds to the reference value of the theory is 1.002 mPa.s, the SAE oil 10W-30 is (79.01± 8.90) Pa.s corresponds to the reference value of the theory 76.8 Pa.s, and glycerin is (593.4± 56.7) mPa.s corresponds to the reference value of the theory 612 mPa.s.


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References


Kwon K, Sammalah P, dan Sanjeev R. 1999. “Experiments On Viscosity of Aqueous Glycerol Solutions Using a Tank-Tube Viscometerâ€. Chemical Engineering Education Division of ASEE. 1999

Nevers, N.D. 1991. Fluids mechanics for Chemical Engineer, 2nd ed. McGraw-Hill.New York

McCabe, W.L, Smith, J.C., and Harriot, P. 1993. Unit Operations of Chemical Engineers, 5th ed. McGrawhill.New York

Hermawati Y.M, Sri W Suciyati, dan Warsito. 2013. “Uji Viskositas Fluida Menggunakan Transduser Ultrasonik sebagai Fungsi Temperatur dan Akuisisinya pada Komputer Menggunakan Universal Serial Bus (USB)â€. Jurnal Teori dan Aplikasi Fisika Vol, 01, No. 01, Januari 2013

Kestin J, Sokolov M, dan Wakeham W.A.1978. Viscosity of Liquid Water in The Range -8c to 150Ëšc. Journals of Physics. Chemistry. Ref.Data, Vol. 7, No. 1978.

KEW Engineering Ltd. 2017. “Oil Viscosity Explainedâ€. http://www.kewengineering.co.uk/Auto_oils/oil_viscosity_explained.htm. diakses pada: 12 Mei 2017

Segur, J.B. dan Helen. E. Oberstar.1949. “Viscosity of Glycerol and Its Aqueous Solutionsâ€. The Miner Laboratories Industrial and Engineering Chemistry. Vol. 43, No. 9.

Nauenberg, M. 2014. “A Paradox with the Hagen-Poiseuille Relation for Viscous Fluid Flowâ€. American Journals of Physics, Vol. 82, No. 1, Januari 2014

Waxman, M.A. 2010. Using Physics to Investigate Blood Flow in Arteries: A Case Study for Premed Students. American Journals of Physics. Vol 78, 970-973

Digilov, R. M. dan M. Reiner, 2005, “Weight-Controlled Capillary Viscometerâ€. American Journals of Physics Teacher. 73 (11), November 2005

Fairman S J, Joseph A. Johnson, dan Thomas A. Walkiewicz. 2003. “Fluid Flow with Logger Proâ€. The Physics Teacher. Vol 41. September 2003




DOI: http://dx.doi.org/10.12928/jrkpf.v4i2.8165

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