Modeling of simultaneous deposition of powder in three parallel-oriented cylindrical dies

X. Xie, V. M. Puri

Research output: Contribution to conferencePaper

Abstract

Die filling is a critical unit operation that is far from being sufficiently understood. No models or methods published can be used to study or simulate the feed shoe filling process or pressure (mass) increase for real-world problems involving a large number of 3D particles of various shapes and sizes. In order to further the understanding of the die filling process, models were developed and verified to simulate the pressure ratio increase for the entire filling process by using the second generation pressure deposition tester (PDT-II). The results indicated that the entire pressure increase profile could be divided into 10 stages, and all the stages could be simulated by a rate equation, based on the data collected and the physics of the filling process. Based on the powder deposition characteristics, the overall rate equation for all the ten stages was: dPP/dτ = αP pF(τ) + β. Furthermore, for stage 1 with the largest amount of powder deposited, the rate equation was dPp/dτ = αP p/(e -1), The average, maximum, and minimum values of the root mean square error (RMSE) for totally 17 locations in the vicinity of the center (r ≤ 4 mm) of the center die were 0.13, 0.19, and 0.11, respectively. The average, maximum, and minimum values of the average relative difference (ARD) for totally 17 locations in the vicinity of the center (r ≤ 4 mm) of the center die were 0.07, 0.09, and 0.06, respectively.

Original languageEnglish (US)
StatePublished - Dec 1 2006
Event2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology - Orlando, FL, United States
Duration: Apr 23 2006Apr 27 2006

Other

Other2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology
CountryUnited States
CityOrlando, FL
Period4/23/064/27/06

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Xie, X., & Puri, V. M. (2006). Modeling of simultaneous deposition of powder in three parallel-oriented cylindrical dies. Paper presented at 2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology, Orlando, FL, United States.