Sökning: "fibre cfd"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden fibre cfd.
1. Fibre Orientation Modelling Applied to Contracting Flows Related to Papermaking
Sammanfattning : The main goal of this work was to develop numerical models for studying the behaviour of fibres in an accelerated flow. This is of special interest for e.g. papermaking. LÄS MER
2. ANALYZING THE HYDRO DYNAMICS AND THE CHEMICAL REACTIONS IN PULP DIGESTER SYSTEMS USING CFD MODELLING
Sammanfattning : The aim of this thesis is to use differential analysis and finite volume method (FVM) to model and analyze a continuous pulp digester in order to create a detailed picture of the flow behaviour and chemical reactions in the digester. This information will be used to optimize wood chip flow and reactions and to diagnose and avoid faults such as hang-ups and channelling. LÄS MER
3. Network Disruption and Turbulence in Fibre Suspensions
Sammanfattning : The production of paper pulp involves the handling of large quantities of fibre suspensions. Today's call for energy efficiency and environmentally sound processes has led to the development of MC (Medium Consistency) technology. LÄS MER
4. Fluid dynamics and flow structures of wood fibres suspended in gas flows
Sammanfattning : The flow of wood fibres suspended in gas plays a major role in the MDF (Medium Density Fibreboard) production process. Development of machinery in this industry has traditionally been based on experience. Only recently has the use of numerical methods such as CFD (Computational Fluid Dynamics) become an important part of the development process. LÄS MER
5. 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