Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System
The technique for processing the output signals of hydrodynamic measuring system of rheological parameters of non-Newtonian fluids is presented in the paper. Hydrodynamic measuring system is built on four serially connected bridge hydrodynamic converters. The paper shows that the error of determinat...
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| Language: | English |
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Lviv Polytechnic National University
2015-12-01
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| Series: | Energy Engineering and Control Systems |
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| Online Access: | https://science.lpnu.ua/jeecs/all-volumes-and-issues/volume-1-number-2-2015/evaluation-influence-wall-slip-measurement |
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| author | Hanna Krykh Halyna Matiko Lyudmyla Sadovska |
| author_facet | Hanna Krykh Halyna Matiko Lyudmyla Sadovska |
| author_sort | Hanna Krykh |
| collection | DOAJ |
| description | The technique for processing the output signals of hydrodynamic measuring system of rheological parameters of non-Newtonian fluids is presented in the paper. Hydrodynamic measuring system is built on four serially connected bridge hydrodynamic converters. The paper shows that the error of determination of rheological parameters directly from the experimental flow characteristic in consistent variables is considerable if the non-Newtonian fluid has the effect of wall slip on measuring surfaces of sensors of bridge transducers. The technique for processing the output signals of the measuring system enables to detect the wall slip and to correct the values of fluid flow-rate in each bridge hydrodynamic converter using the values of the wall slip coefficient. Corrected flow characteristic is the basis for the determination of rheological parameters of controlled fluid. The influence of wall slip on the evaluation of rheological model of non-Newtonian fluid and results of measurement of its parameters are analyzed in the paper. It is shown that taking into account the effect of wall slip significantly improves measuring accuracy of rheological parameters. |
| format | Article |
| id | doaj-art-f41ff2a17dfe413cb9f4a9c09b1c1007 |
| institution | OA Journals |
| issn | 2411-8028 2415-7287 |
| language | English |
| publishDate | 2015-12-01 |
| publisher | Lviv Polytechnic National University |
| record_format | Article |
| series | Energy Engineering and Control Systems |
| spelling | doaj-art-f41ff2a17dfe413cb9f4a9c09b1c10072025-08-20T02:03:08ZengLviv Polytechnic National UniversityEnergy Engineering and Control Systems2411-80282415-72872015-12-011213914610.23939/jeecs2015.02.139Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring SystemHanna Krykh0Halyna Matiko1Lyudmyla Sadovska2Lviv Polytechnic National UniversityLviv Polytechnic National UniversityLviv Polytechnic National UniversityThe technique for processing the output signals of hydrodynamic measuring system of rheological parameters of non-Newtonian fluids is presented in the paper. Hydrodynamic measuring system is built on four serially connected bridge hydrodynamic converters. The paper shows that the error of determination of rheological parameters directly from the experimental flow characteristic in consistent variables is considerable if the non-Newtonian fluid has the effect of wall slip on measuring surfaces of sensors of bridge transducers. The technique for processing the output signals of the measuring system enables to detect the wall slip and to correct the values of fluid flow-rate in each bridge hydrodynamic converter using the values of the wall slip coefficient. Corrected flow characteristic is the basis for the determination of rheological parameters of controlled fluid. The influence of wall slip on the evaluation of rheological model of non-Newtonian fluid and results of measurement of its parameters are analyzed in the paper. It is shown that taking into account the effect of wall slip significantly improves measuring accuracy of rheological parameters.https://science.lpnu.ua/jeecs/all-volumes-and-issues/volume-1-number-2-2015/evaluation-influence-wall-slip-measurementhydrodynamic measuring systembridge hydrodynamic transducernon-newtonian fluidrheological parameterswall slip |
| spellingShingle | Hanna Krykh Halyna Matiko Lyudmyla Sadovska Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System Energy Engineering and Control Systems hydrodynamic measuring system bridge hydrodynamic transducer non-newtonian fluid rheological parameters wall slip |
| title | Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System |
| title_full | Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System |
| title_fullStr | Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System |
| title_full_unstemmed | Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System |
| title_short | Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System |
| title_sort | evaluation of influence of wall slip on measurement of rheological parameters by means of a hydrodynamic measuring system |
| topic | hydrodynamic measuring system bridge hydrodynamic transducer non-newtonian fluid rheological parameters wall slip |
| url | https://science.lpnu.ua/jeecs/all-volumes-and-issues/volume-1-number-2-2015/evaluation-influence-wall-slip-measurement |
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