Sökning: "Boger fluid"

Hittade 3 avhandlingar innehållade orden Boger fluid.

1. 1. Evaluation of a Measuring System for Determining Extensional Properties

   Författare :Magda Nyström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LPTT-model; Viscoelastic fluid; Boger fluid; numerical simulation; FENE-CR model; extensional rheology; White-Metzner model; hyperbolic contraction flow;

   Sammanfattning : Effective and reliable characterisations of fluids are important to gain knowledge of thebehaviour and to govern the properties of a fluid. Since food products often are non-Newtonian, viscoelastic liquids, the characterisation becomes more complicated. LÄS MER

3. 2. Extensional rheometry through hyperbolic contraction

   Författare :Magda Nyström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dysphagia; Boger fluid; hyperbolic contraction flow; extensional rheology; axisymmetric contraction–expansion; numerical simulation; Viscoelastic fluid; pressure drop;

   Sammanfattning : To understand fluid rheology, properties such as consistency and viscosity are determined in both shear and extensional flow. Many commonly-used materials and formulations exhibit complex rheological properties and in order to determine the behaviour as well as predict and govern their properties, effective and reliable characterisation of these fluids is important. LÄS MER

4. 3. Assessment of human swallowing using in-vivo and in-vitro approaches

   Författare :Muhammad Waqas; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; in-vitro manometery; In-vitro simulations; In-vivo analysis; microstructure analysis; extensional rheology; dysphagia; Ultrasound viscometry; Bolus Rheology;

   Sammanfattning : Texture modification is the most vital strategy to manage dysphagia: a condition in which food and beverages are difficult to swallow. Typically thickeners in the form of starch or gums are added to the food to increase the viscosity and thereby reduce the speed of bolus flow. LÄS MER