Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Dilute polymer solutions"”.
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The Toms phenomenon : turbulent pipe flow of dilute polymer solutions.
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1967.
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Triggered laminar-to-turbulent transition in pipe flows of dilute polymer solutions.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1968.
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Polymer-induced turbulence modifications in an impinging jet
This effort explores the impact of dilute polymer solutions on the turbulence characteristics in a submersed liquid impinging-jet configuration. Turbulent impinging jets are commonly used in technological applications such as drying, scouring, cooling or heating due to an enhancement in transport …
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Contraction/expansion flow of dilute elastic solutions in microchannels
… on the nature of extensional flows of mobile dilute polymer solutions in microchannel. By observing such fluids on the microscale it is possible to generate large strain rates ([approximately] 50,000 s⁻¹) that are greater than values which have been observed in macroscale contraction flows. …
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An experimental and theoretical investigation of the rheological properties and degradation of mucin solutions : (or why saliva becomes watery when removed from your mouth)
… 78]. In general, these biological fluids are polymeric, and as a result tend to be viscoelastic. However, as a result of protease and enzymatic activity, these fluids are often unstable and can degrade with time [23, 65]. This was observed in the case of saliva by Aggazzotti nearly a century …
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Hydrodynamic interactions of complex fluids and fibrous media
… to investigate the convection and diffusion of dilute polymer solutions through cylindrical paths of vertically aligned carbon nanotubes. The experiments demonstrate the ability to systematically control the thickness and uniformity of adsorbed polymers on the carbon nanotubes through variation …
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Single polymer dynamics in semi-dilute solutions: linear and ring polymers
"Synthetic and biological polymers are ubiquitous in nature and modern technologies. Traditional characterization methods of polymeric materials rely on bulk level measurements that can provide useful information on material properties. However, these methods generally cannot access underlying …
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Physico-chemical hydrodynamics of droplets on textured surfaces with engineered micro/nanostructures
… surfaces to water, non-Newtonian fluids such as dilute polymer solutions are widely used to maximize the deposition rate of aqueous droplets sprayed onto textured liquid-repellent target surfaces. The drop impact dynamics of complex liquids on such surfaces is studied to develop a systematic …
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The dynamics of polymer solutions: Effects of concentration, chain architecture, and flow
The dynamics and rheology of polymer solutions are crucial to understanding and designing a broad range of polymer processing applications and biological systems. The microscopic conformational dynamics of polymers are directly related to the rheological response of solutions in processing flows. …
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ΕΙΣΑΓΩΓΗ ΚΑΙ ΜΕΛΕΤΗ ΜΙΑΣ ΝΕΑΣ ΚΡΙΣΙΜΗΣ ΣΥΓΚΕΝΤΡΩΣΗΣ ΣΤΗ ΠΕΡΙΟΧΗ ΤΩΝ ΑΡΑΙΩΝ ΜΑΚΡΟΜΟΡΙΑΚΩΝ ΔΙΑΛΥΜΑΤΩΝ
A VISCOMETRIC STUDY OF TERNARY SYSTEMS POLYMER A - POLYMER B - SOLVENT, WE DETERMINED A NEW CRITICAL CONCETRATION C** WHICH SEPERATE THE DILUTE SOLUTIONS IN TOW REGIMES. THE REGIME OF VERY DILUTE SOLUTIONS C C<C** AND THE REGIME OF DILUTE SOLUTION (C>C**). IT IS PROPOSED A MODEL WHICH DESCRIBE THIS …