Development of a High-pressure Rotational Rheometer for Investigation of Effects of Dissolved CO2
| dc.contributor.advisor | Park, Simon | |
| dc.contributor.author | Lee, Keonje | |
| dc.contributor.committeemember | Kim, Seonghwan | |
| dc.contributor.committeemember | Wong, Joanna | |
| dc.contributor.committeemember | Natale, Giovanniantonio | |
| dc.date.accessioned | 2018-01-23T00:23:31Z | |
| dc.date.available | 2018-01-23T00:23:31Z | |
| dc.date.issued | 2018-01-08 | |
| dc.description.abstract | Rheological information is often used to determine viscoelastic fluid properties, and to model and predict fluid behavior under influence of external stress or deformation. Many industrial processes involve the dissolution of gas under high pressure, so it is important to evaluate the rheological properties of viscoelastic materials under high pressure. In this research, a high pressure rotational rheometer was developed to measure the rheological parameters of viscoelastic fluids and investigate the influence of the dissolution of gases on rheology. The rheometer utilized a piezoelectric torque transducer, which enabled transient and dynamic rheological measurements under high pressure. First, the rheometer was designed, fabricated, and calibrated using a calibration fluid. Second, the capability of the rheometer was verified using polydimethylsiloxane (PDMS), which is a typical viscoelastic fluid. Viscosity and viscoelastic properties, such as storage/loss modulus, and complex viscosity, were evaluated. Thirdly, the effects of the dissolved CO2 on the rheological properties of PDMS were investigated. The effects of temperature and dissolved CO2 were investigated individually at the temperature of 25, 50, 80°C and CO2 saturation pressures of 1, 2, 3 MPa. Then, the combined effect was correlated using a generalized Arrhenius model. The proposed model expressed viscosity as a function of temperature and pressure without the need for thermodynamic and volumetric information of the fluid. The achievement of this research provides an alternative method to measure rheological properties of viscoelastic materials under high pressure and enables the prediction of the viscosity of a fluid with dissolved gas through modelling. | en_US |
| dc.identifier.citation | Lee, K. (2018). Development of a High-pressure Rotational Rheometer for Investigation of Effects of Dissolved CO2 (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. | en_US |
| dc.identifier.doi | http://dx.doi.org/10.11575/PRISM/5387 | |
| dc.identifier.uri | http://hdl.handle.net/1880/106306 | |
| dc.language.iso | en | en_US |
| dc.publisher.faculty | Schulich School of Engineering | en_US |
| dc.publisher.institution | University of Calgary | en |
| dc.rights | University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. | en_US |
| dc.subject.classification | Chemistry--Polymer | en_US |
| dc.subject.classification | Engineering--Chemical | en_US |
| dc.subject.classification | Materials Science | en_US |
| dc.subject.classification | Engineering--Mechanical | en_US |
| dc.title | Development of a High-pressure Rotational Rheometer for Investigation of Effects of Dissolved CO2 | en_US |
| dc.type | master thesis | en_US |
| thesis.degree.discipline | Engineering – Mechanical & Manufacturing | en_US |
| thesis.degree.grantor | University of Calgary | en_US |
| thesis.degree.name | Master of Science (MSc) | en_US |
| ucalgary.item.requestcopy | true | |
| ucalgary.thesis.checklist | I confirm that I have submitted all of the required forms to Faculty of Graduate Studies. | en_US |