Sökning: "dense suspensions"

Hittade 4 uppsatser innehållade orden dense suspensions.

  1. 1. Rheology of dense particle suspensions in linear over-damped flow

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Salar Zamani Salimi; [2021]
    Nyckelord :;

    Sammanfattning : Suspensions are composed of mixtures of particles and fluid and are omnipresent in natural phenomena and in industrial processes. While hydrodynamic interactions or lubrication forces between the particles are important in the dilute regime, they become of lesser significance when the concentration is increased, and direct particle contacts become dominant in the rheological response of concentrated suspensions, particularly those close to the maximum volume fraction where the suspension ceases to flow. LÄS MER

  3. 2. An analytical and numerical study of droplet formation and break-off for jetting of dense suspensions

    Master-uppsats, KTH/Mekanik

    Författare :Kurian Jomy Vachaparambil; [2016]
    Nyckelord :Thixotropy; Jetting; COMSOL; Solder paste laments;

    Sammanfattning : The jet printing of solder paste from a uid dynamics perspective involves viscosity change due to varying shear rate and eventual break o of the ejected solder paste droplet from the uid in the printer head. The ability to model the jetting process in a simulation package is important as it can be used as a tool for future development of the jetting device. LÄS MER

  4. 3. Characterization of casein micelles and sodium caseinate in dense suspensions

    Master-uppsats, Lunds universitet/Förpackningslogistik

    Författare :Andrew Vasina; [2016]
    Nyckelord :casein micelles; sodium caseinate; dense suspensions; charge density; rheology; Agriculture and Food Sciences;

    Sammanfattning : This thesis describes the characterization of the rheological properties of dense suspensions of sodium caseinate and micellar casein with respect to changes in concentration (100-200g/L), pH (7.0-5.3), charge density (Δα), and temperature (5-40°C). LÄS MER

  5. 4. Synthesis and characterization of amine-functionalized microgel particles and their subsequent assembly into colloidal molecule-like clusters by droplet-based microfluidics

    Kandidat-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Emil Gustafsson; [2015]
    Nyckelord :Physical chemistry; fysikalisk kemi; Chemistry;

    Sammanfattning : The ability of thermoresponsive, amine-functionalized microgel particles to take part in microgelmicrogel inter-cross-linking has previously been reported in the literature, in connection to applications such as for example the formation of stimuli-responsive colloidal gels and colloidosomes [1]. This thesis deals with the synthesis of such thermoresponsive, cross-linkable microgels and their subsequent assembly into clusters using droplet-based microfluidics, with the goal of forming responsive colloidal molecules with well-defined valency. LÄS MER