The dynamic viscosity of SiO2/22nm nanofluids created in a glycerine-water (30:70 by volume) mixed base liquid, referred to as GW70, was determined experimentally. At temperatures ranging from 20 to 80 degrees Celsius, nanofluids with concentrations of 0.2, 0.6, and 1.0 percent are generated, and viscosity measurements are taken with an LVDV-2T Brookfield Viscometer. The particle size and elemental composition of nanoparticles are determined using FESEM and EDX, while XRD images show the existence of SiO2 peaks in the crystalline structure. The rheology of nanofluids is affected by the concentration of nanoparticles. In the experimental temperature and concentration range, nanofluids behave Newtonian. The viscosity of nanofluids increased as particle concentration increased and reduced as temperature increased. At 20oC, the highest viscosity value is at 1.0 percent vol. concentration, whereas at 80oC, the lowest viscosity value is at 0.2 percent vol. concentration. The viscosity of the glycerine-water base fluid was also tested at 20, 40, 60, and 80 degrees Celsius. The viscosity ratio of all nanofluids to the base liquid is determined to be larger than one. This viscosity data may be used to determine the HTC of glycerine-water-based silica nanofluids.

Author(s) Details:

M. Mohammed Mohaideen,
Department of Aeronautical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad-500100, India.

P. H. V. Sesha Talpa Sai,
Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad-500100, India.

M. L. R. Chaitanya Lahari,
Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad-500100, India.

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