Three-dimensional boundary element simulations of concentrated suspensions in a spinning ball rheometer.
The spinning ball rheometer has been proposed as a method to measure rheological properties of concentrated suspensions. Recent experiments have shown that the measured extra torque on the spinning ball decreases as the radius of the spinning ball becomes comparable to the size of the suspended particle. We have performed a series of three dimensional boundary element calculations of the rheometer geometry to probe the microstructure effects that contribute to the apparent 'slip.' We will present a series of snap-shot results as well as several transient calculations which are compared to the available experimental data. The computational limitations of these large-scale simulations shall also be discussed.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 964529
- Report Number(s):
- SAND2004-3656J
- Journal Information:
- Proposed for publication in Communications in Numerical Methods in Engineering., Journal Name: Proposed for publication in Communications in Numerical Methods in Engineering.
- Country of Publication:
- United States
- Language:
- English
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Three-dimensional boundary element simulations of concentrated suspensions in a spinning ball rheometer.