The ferro-oils viscosity depended simultaneously on the temperature and magnetic oil particles concentration η = η(t,ϕ). Part 2

• Autorzy: Frycz M.

Identyfikatory

DOI

10.5604/12314005.1216458

• Języki publikacji: EN

Abstrakty

EN

The purpose of this article is to determine and describe the viscosity characteristics of the ferro-oils at context of temperature changes depend on different concentrations of magnetic particles. These characteristics were determined for the following test conditions: atmospheric pressure, constant shear rate and absent of an external magnetic field. In Part I of the paper there was determined and described four mathematical-physical models of fittings of the viscosity characteristics: exponential, fourth-degree polynomial and two homographic models – second- and third-degree. In present Part II of the paper above mentioned models have been developed. That has been done their depending on parameter of concentrations of magnetic particles ϕ in ferro-oil. There have been also undertaken comparison of the accuracy of estimation of reached results by selected mathematical models as well as these results have been rated according to their compliance with theoretical assumptions. Tests were performed for selected concentrations of magnetic particles in ferro-oil ranging: 1%, 2%, 4%, 6% and 8%. Tested ferro-oil was product from Unterensingen FerroTec Company (Germany) which is a mixture of colloidal mineral engine oil LongLife Gold Pennzoil class SAE 15W-40 with addition of Fe3O4 magnetic particles and a surfactant. Analysis of the results, identifying and fitting of characteristics has been made by means of software StatSoft STATISTICA ver. 9.1. The obtained characteristics going to be used by author in his future work to build mathematical models of viscosity changes of ferro-oils in the aspect of changes of parameters such as temperature, pressure, shear rate and the value of the external magnetic field. The determined parameters of physical properties will be used in analytical and numerical studies of flow and operating parameters of slide journal bearings lubricated with ferro-oils.

Słowa kluczowe

EN

ferro-oil; dynamic viscosity; magnetic particles concentration

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 3
• Strony: 127--134
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Frycz M.

• Maritime University Gdynia Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Amulevicius, A., Baltrunas, D., Mazeika, K., Fannin, P. C., Perfiliev, Y. D., A study of magnetic properties of fixed ferrite nanoparticles in ferrofluid, Journal of Molecular Liquids, Vol. 133, pp. 152-158, 2007.
• [2] Bou-Said, B., Boucherit, H., Lahmar, M., On the influence of particle concentration in a lubricant and its rheological properties on the bearing behaviour, Mechanics and Industry Journal, Vol. 12, pp. 111-121, 2012.
• [3] Henjes, K., Maxwell’s equations and vorticity: A note on a viscosity of magnetic fluids, Journal of Magnetism and Magnetic Materials, Vol. 146, pp. 236-240, 1995.
• [4] Hong, R. Y., Ren, Z. Q., Han, Y. P., Li, H. Z., Zheng, Y., Ding Y., Rheological properties of water-based Fe3O4 ferrofluids, Chemical Engineering Science, Vol. 62, pp. 5912-5924, 2007.
• [5] Hosseini, M. S., Vafajoo, L., Ghasemi, E., Salman, B. H., Experimental investigations the effect nanoparticle concentration on the rheological behaviour of paraffin-based nickel ferrofluid, International Journal of Heat and Mass Transfer, Vol. 93, pp. 228-234, 2016.
• [6] Jamon, D., Donatini, F., Monin, J., Rasa, M., Socoliuc, V., Filip, O., Bica, D., Sofonea, V., Concentration dependence of magnetization and magneto-optical effect in a ferrofluid with double layer stabilized particles, Journal of Magnetism and Magnetic Materials, Vol. 201, pp. 174-177, 1999.
• [7] Lopez, J. L., Pfannes, H. D., Paniago, R., Tourinho, F. A., Influence of particle size on super-paramagnetic relaxation of MnFe2O4 particles in ferrofluids, Journal of Magnetism and Magnetic Materials, Vol. 226-230, pp. 1878-1880, 2001.
• [8] Odenbach, S., Magnetoviscous Effects in Ferrofluids, Springer, Berlin 2002.
• [9] Rinaldi, C., Chaves, A., Elborai, S., He, X., Zahn, M., Magnetic fluid rheology and flows, Current Opinion in Colloidal & Interface Science, Vol. 10, pp. 141-157, 2005.
• [10] Rosenswaig, R. E., Ferrohydrodynamics, Dover Publ. INC, Mineola, New York 1997.
• [11] Wah-Keat, L., Ilavsky, J., Particle size distribution in ferrofluids macro-clusters, Journal of Magnetism and Magnetic Materials, Vol. 330, pp. 31-36, 2013.
• [12] Wang, D. K., Avashia, A., On the viscosity of magnetic fluid, Journal of Magnetism and Magnetic Materials, Vol. 153, pp. 359-365, 1996.
• [13] Wang, L., Wang, Y., Yan, X., Wang, X., Feng, B., Investigation on viscosity of Fe3O4 nanofluid under magnetic field, International Communications in Heat and Mass Transfer, Vol. 72, pp. 23-28, 2016.
• [14] Zubarev, A. Yu., Iskakova, L. Yu., Rheological properties of ferrofluids with drop-like agregates, Physica A, Vol. 376, pp. 38-50, 2007.
• [15] Zubarev, A. Yu., Iskakova, L. Yu., Yuskhov, A., Dynamical properties of dense magnetic suspension, Journal of Magnetism and Magnetic Materials, Vol. 201, pp. 226-229, 1999.
• [16] Zubarev, A. Yu., Iskakova, L. Yu., Abu-Bakr, A. F., Effect of interparticle interaction on magnetic hyperthermia in ferrofluids, Physica A, Vol. 438, pp. 487-492, 2015.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.