A Modified Free Surface Treatment for the Modeling of Puddle Formation in Planar Flow Casting Process
スポンサーリンク
概要
- 論文の詳細を見る
The planar flow casting (PFC) process for rapid solidification of metallic materials has been in commercial use to produce thin strips of glassy or microcrystalline materials. The conditions of melt puddle between nozzle and rotating wheel affect significantly the quality and dimensional uniformity of the downstream ribbon. A previous study had developed a mathematical model to analyze the shape of the puddle and the momentum transfer phenomena during the formation of puddle. The model was based on a computational fluid dynamics technique, called the SOLA-VOF scheme, which possesses the capability of treating transient fluid flow problems with evolution of free boundaries. The balance between the inertia effect and the surface tension effect has to be reached for the formation of a steady puddle. The previous model, however, had empolyed a rather simplified treatment for the free surface boundary conditions. In this study a more accurate treatment of the free surface boundary conditions is proposed. The results show that the modified treatment results in a wider puddle and a longer time is required for the steady puddle to be formed. With the model, we also evaluate the effects of different process variables on the puddle and compare the difference of the simplified treatments with the modified treatments for the free surface boundary conditions. The results reveal that the modified treatments of the free surface boundary conditions results in a more wider melt puddle near the substrate than the puddle near the nozzle. This is more consistent to the experimental observation.
- 社団法人 日本鉄鋼協会の論文
- 1995-04-15
著者
-
Hwang Weng-sing
Department Of Material Science And Engineering National Cheng Kung University
-
CHEN Chin-Wen
Department of Materials Science and Engineering, National Cheng Kung University
-
Chen Chin-wen
Department Of Materials Science And Engineering National Cheng Kung University
関連論文
- Numerical Study of Fluid Flow Behaviors in an Alkali-Free Glass Melting Furnace
- Effects of Graphite, SiO_2, and Fe_2O_3 on the Crushing Strength of Direct Reduced Iron from the Carbothermic Reduction of Residual Materials
- Numerical Study of Fluid Flow and Heat Transfer Behaviors in a Physical Model Similar in Shape to an Actual Glass Melting Furnace and Its Experimental Verification
- The Effects of Operating Parameters on Micro-Droplet Formation in a Piezoelectric Inkjet Printhead Using a Double Pulse Voltage Pattern
- Study of Micro-Droplet Behavior for a Piezoelectric Inkjet Printing Device Using a Single Pulse Voltage Pattern
- Simulation of Droplet Ejection for a Piezoelectric Inkjet Printing Device
- Effects of Process Conditions of Melting Furnace on Alkali-Free Glass Cleanliness
- Electrochemistry of Ethanol Oxidation on Ni-Pt Alloy Electrodes in KOH Solutions
- Experimental Investigation on Earing Behavior of Aluminum/Copper Bimetal Sheet
- The Simulation of Shape Evolution of Solder Joints during Reflow Process and Its Experimental Validation
- Characterization of SnO_2/TiO_2 Double-Layer Films as Alcohol Sensing Materials
- Effects of Solid Fraction on the Heat Transfer Coefficient at the Casting/Mold Interface for Permanent Mold Casting of AZ91D Magnesium Alloy
- Mold Filling Analysis in Lost Foam Casting Process for Aluminum Alloys and Its Experimental Validation
- Multi-phase Flow Simulations in Direct Iron Ore Smelting Reduction Process
- Influence of Interfacial Structure Development on the Fracture Mechanism and Bond Strength of Aluminum/Copper Bimetal Plate
- Forging Condition for Removing Porosities in the Hybrid Casting and Forging Process of 7075 Aluminum Alloy Casting
- Mathematical Modeling of Fluid Flow Phenomena during Tundish Filling and Subsequent Initial Casting Operation in Steel Continuous Casting Process
- Effects of Substrate Temperature and Oxygen Pressure on Crystallographic Orientations of Sputtered Nickel Oxide Films
- Effect of Film Thickness on Structural and Electrical Properties of Sputter-Deposited Nickel Oxide Films
- Effects of Basicity and FeO Content on the Softening and Melting Temperatures of the CaO-SiO_2-MaO-Al_2O_3 Slag System
- High Mechanical Properties of Polychloroprene/Montmorillonite Nanocomposites
- Transformation Characterization of Ni(OH)_2/NiOOH in Ni-Pt Films Using an Electrochemical Quartz Crystal Microbalance for Ethanol Sensors
- Numerical Simulation on Hardness Distribution for a FC250 Gray Cast Iron Brake Disc Casting and Its Experimental Verification
- Process Design Optimization through Numerical Experimentation for a Brake Disc Casting
- Effects of Pulse Voltage on the Droplet Formation of Alcohol and Ethylene Glycol in a Piezoelectric Inkjet Printing Process with Bipolar Pulse
- A Three Dimensional Cellular Automaton Model for the Prediction of Solidification Morphologies of Brass Alloy by Horizontal Continuous Casting and Its Experimental Verification
- Pasty Ranges and Latent Heat Release Modes for Sn-9Zn-xAg Lead-free Solder Alloys
- Numerical Simulation of Inclusion Removal in a Billet Continuous Casting Mold Based on the Partial-cell Technique
- Mathematical Modeling of Solidification Microstructure of Pure Copper by Vacuum Continuous Casting and Its Experimental Verification
- Study of Solid Accretion Formation inside Pyrometallurgical Vessels by a Wax Model and Similarity Conversion for Gas Bottom-Blown Process
- Preparation and Mechanical Properties of Polychloroprene–Montmorillonite Composites
- Dispersibility of Amphibious Montmorillonite
- The Analysis of Molten Steel Flow in Billet Continuous Casting Mold
- A Modified Free Surface Treatment for the Modeling of Puddle Formation in Planar Flow Casting Process