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Showing 1 to 11 of 11 for “"Coating flow"”.
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Selected topics in viscous flow: Coating flow with rotation
… two parts concerning rotational molding and spin coating, respectively. Both parts consider coating flows which have relevance to industrial applications. The main theme of the thesis is to make appropriate simplifications to the mathematical descriptions of the flows in order to achieve …
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Fluid Mechanics of High Speed Deformable Roll coating. An experimental and theoretical study of film thickness and stability in high speed deformable roll coating flow with Newtonian and non-Newtonian liquids
High operation speeds and thin coating films are desirable in many industrial applications. But the quality of the product, which is primarily determined by an optimum process window, is affected by non-uniformities and instabilities originating at higher operation speeds. Unlike other academic …
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Stability analysis of gravity-driven viscosity-stratified coating flows
… of a gravity-driven and viscosity-stratified coating flow useful in covering a planar surface with one or more liquid layers. The challenging stability analysis of a coating flow on a curved substrate surface is discussed. The mathematical foundation on which to analyse the stability of this …
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Flow Imaging of the Fluid Mechanics of Multilayer Slide Coating. Flow visualisation of layers formation in a 3-layers slide coating die, measurement of their thicknesses and interfacial and free surface flow instabilities
Coating onto a moving substrate several films simultaneously on top of each other is a challenging exercise. This is due to the fact, depending on operating conditions (thickness and velocity of individual layers and the physical properties of the coating fluids), flow instabilities may arise at …
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Stability of rigid and deformable roll coating flows
… of instabilities in rigid and deformable roll coating flows. Consideration is restricted to Newtonian, incompressible fluids in the absence of inertia. In each coating flow analysed the steady two dimensional base state solutions of the system axe explored before the stability of the system is …
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Instabilities in particle-laden flows
… industrial processes and in nature. Dry granular flows and suspensions have been well studied and present a broad range of problems in terms of rheology and instabilities. In both cases, new phenomena are continually discovered. Indeed, complex behavior can be exhibited whether the granular media …
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An experimental investigation of roll coating phenomena
… appear to have escaped the attention of the Coating Community at large prior to the research work reported here being carried out. A detailed description of how the key features of an industrial roll coater can be reproduced using a piece of simple but well designed experimental apparatus, …
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MOVING WALL JET FLOW NEAR CHANNEL EXIT AT MODERATE REYNOLDS NUMBER
The two-dimensional jet flow of a Newtonian fluid at moderate Reynolds number, emerging from a channel and flowing along one moving plate, while the other plate is stationary, is examined theoretically in this study. In this case, the equations of motion are reduced by expanding the flow field …
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Vermeidungsstrategien fluiddynamischer Effekte beim Einsatz von Schnellerwärmungstechnologien in der Warmumformung
Aufgrund fluiddynamischer Effekte bei der Schnellerwärmung für die Warmumformung wird die Applikation der Technologie erschwert. Die vorliegende Arbeit thematisiert diesen Effekt und evaluiert die Triebkräfte sowohl numerisch als auch im Experiment. Aufbauend darauf werden Vermeidungsstrategien …
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Chemical Application of Silicon-Based Resonant Microsensor
… research, a measurement setup with a custom-made flow cell for liquid-phase chemical measurements and a coating system to locally deposit polymer sensitive films onto the resonators were developed. To improve the film adhesion on the resonator surface in liquid, physical and chemical binding …
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Chemically-bonded enamel-coated steel pipelines for corrosion protection and flow efficiency
… to explore and develop chemically-bonded enamel coating (200-300 um) on steel pipes, when subjected to soil and thermal environments, in order to improve the corrosion protection and safety of hazardous liquid and natural gas pipelines while reducing pressure loss. Out of five types of enamels …