Upload
crescent
View
19
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Dynamics of Thread Movement in Turbulent F low Field. James Hallendorff Suman Sinha Ray Alexander L. Yarin. Motivation. Investigate instability mechanism in melt blowing. Initial setup. Used to measure Lagrangian motion. Lagrangian Results. Lagrangian Results. Eulerian Behavior. - PowerPoint PPT Presentation
Citation preview
James HallendorffSuman Sinha RayAlexander L. Yarin
• Investigate instability mechanism in melt blowing
• Used to measure Lagrangian motion
• Fast Fourier Transform
• Many harmonics, few that make a difference
• Determine correlation between string length and snapping length or air velocity and snapping length
• Gravity causes artificial snapping point-makes unreliable results
• New setup
• Using a fixed-length criteria skews results
• Compare ratios of width to snapping length
• Use the frequencies found in the FFT to augment theoretical model
• Analyze the movement of the string in a vertical position
• Use polymer solution to simulate melt blowing and to compare it to the thread movement modelConclusion: 2 months is not enough
• "MELT BLOWN TECHNOLOGY." UT Knoxville | College of Engineering. Web. 16 July 2009. <http://www.engr.utk.edu/mse/pages/Textiles/Melt%20Blown%20Technology.htm>.
• EEC-NSF Grant #0755115
• Dr. Takoudis
• Dr. Jursich
• Qian Tao