Abstract
Wide gap coaxial rheometers with vane-in-cup systems are widely used to determine rheological properties of cement paste, mortar and concrete. Available analytical models allow the calculation of average shear stress with acceptable accuracy. However, they exhibit serious oversimplifications, e.g. torque contributions of other parts than the vertical cylinder equivalent surface or neglecting of stress peaks. Hence, the accuracy of calculated shear stress values may be questionable depending on the actual purpose.
In the present contribution, experimental investigations of Newtonian fluids in a wide gap rheometer with both, a coaxial smooth steel cylinders and a vane-in-cup system, are presented. Accuracy of analytical models is discussed with respect to shear rate distributions over gap and over cylinder resp. vane probe surfaces determined from Computational Fluid Dynamics (CFD) simulations. A modified analytical model is proposed. As will be shown, the averaged shear rates over one revolution calculated from CFD simulations are comparable with the modified analytical model. Further results are discussed and an outlook for future research is given.
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References
Koehler EP, Fowler DW (2004) Development of a portable rheometer for fresh portland cement concrete, Research report ICAR-105-3
Rabia A, Yahiaoui S, Djabourov M, Feuillebois F, Lasuye T (2014) Optimization of the vane geometry. Rheol Acta 53:357–371
Ovarlez G, Mahaut F, Bertrand F, Chateau X (2011) Flows and heterogeneities with a vane tool: magnetic resonance imaging measurements. J Rheol 55:197–223
Hamedi N, Revstedt J, Tornberg E, Innings F (2014) A new numerical method for correction of wide gap rheometry data by CFD. Transactions of the Nordic Rheology Society, vol 22
Tattersall GH, Banfill PFG (1983) The rheology of fresh concrete, pp 53–57
Wallevik OH, Feys D, Wallevik JE, Khayat KH (2015) Avoiding inaccurate interpretations of rheological measurements for cement-based materials. Cem Concr Res 78:100–109
Feys D, Wallevik JE, Yahia A, Khayat KH, Wallevik OH (2013) Extension of the Reiner-Riwlin equation to determine modified Bingham parameters measured in coaxial cylinders rheometers. Mater Struct 46:289–311
Munson BR, Young DF (2002) Fundamentals of fluid mechanics, pp 16–18
Estellé P, Lanos C, Perrot A, Amziane S (2008) Processing the vane shear flow data from Couette analogy. Appl Rheol 18(3):34037
Steffe JF (1996) Rheological methods in food process engineering, 2nd edn. Freeman Press, East Lansing
ANSYS Inc. (2009) ANSYS FLUENT 12.0, user’s guide, pp 147–148
Schleibinger Testing Systems. http://www.schleibinger.com/cmsimple/
Schramm G (1998) A practical approach to rheology and rheometry, pp 36–39
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Eslami Pirharati, M., Ivanov, D., Krauss, HW., Schilde, C., Lowke, D. (2020). Numerical Simulation of the Flow Behavior of Newtonian Fluids in a Wide Gap Rheometer by CFD. In: Mechtcherine, V., Khayat, K., Secrieru, E. (eds) Rheology and Processing of Construction Materials. RheoCon SCC 2019 2019. RILEM Bookseries, vol 23. Springer, Cham. https://doi.org/10.1007/978-3-030-22566-7_68
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DOI: https://doi.org/10.1007/978-3-030-22566-7_68
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