Sökning: "rheological models"
Visar resultat 6 - 10 av 25 avhandlingar innehållade orden rheological models.
6. On the measurement and application of cement grout rheological properties
Sammanfattning : The rheological properties of cement-based grouts play a key role in determining the final spread in grouted rock formations. Rheologically, cement grouts are known to be complex thixotropic fluids, but their steady flow behavior is often described by fitting the simple Bingham constitutive law to flow curve data. LÄS MER
7. Fibre orientation, rheological behaviour and simulation of the compression moulding process for composite materials
Sammanfattning : Compression moulding is a common manufacturing process for composite materials. In order to better predict the processing and performance of components, simulation tools are becoming more important. In this thesis the behaviour of the compression moulding raw material has been studied to provide a platform for better simulations. LÄS MER
8. In-line rheology of cement grouts - Feasibility study of an ultrasound based non-invasive method
Sammanfattning : Grouting is used in underground construction to reduce the water flow into tunnels and caverns and to limit the lowering of the surrounding groundwater table. Due to their wide availability and low cost relative to other materials, cement based materials are commonly used as grouts and, in this context, the rheology of the cement grout is an important factor. LÄS MER
9. Blood Flow variations in Large Arteries due to non-Newtonian rheology
Sammanfattning : The blood is a complex fluid that contains, in addition to water, cells, macro-molecules and a large number of smaller molecules. The physical properties of the blood are therefore the result of non-linear interactions of its constituents, which are influenced by the local flow field conditions. LÄS MER
10. Thin sheet approximations for geodynamic applications
Sammanfattning : Thin sheet approximations are widely used in geodynamics because of their potential for fast computing of 3D lithospheric deformations using simple numerical techniques. However, this simplicity imposes limits to boundary conditions, rheological settings and accuracy of results. LÄS MER