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Computer simulations of sodium formate solution in a mixing tank
106 viewed

Computer simulations of sodium formate solution in a mixing tank

Mousavi, S. M

Computer simulations of sodium formate solution in a mixing tank

Mousavi, S. M ; Sharif University of Technology | 2008

106 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.cnsns.2006.05.002
  3. Publisher: 2008
  4. Abstract:
  5. Traditionally, solid-liquid mixing has always been regarded as an empirical technology with many aspects of mixing, dispersing and contacting were related to power draw. One important application of solid-liquid mixing is the preparation of brine from sodium formate. This material has been widely used as a drilling and completion fluid in challenging environments such as the Barents Sea. In this paper, large-eddy simulations of a turbulent flow in a solid-liquid baffled cylindrical mixing vessel with large number of solid particles are performed to obtain insight into the fundamental aspects of a mixing tank. The impeller-induced flow at the blade tip radius is modeled by using the dynamic-mesh Lagrangian method. The simulations are four-way coupled, which implies that both solid-liquid and solid-solid interactions are taken into account. By employing a soft particle approach the normal and tangential forces are calculated acting on a particle due to viscoelastic contacts with other neighboring particles. The results show that the granulated form of sodium formate may provide a mixture that allows faster and easier preparation of formate brine in a mixing tank. In addition it is found that exceeding a critical size for grains phenomena, such as caking, can be prevented. The obtained numerical results suggest that by choosing appropriate parameters a mixture can be produced that remains free-flowing no matter how long it is stored before use. © 2006 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Brines ; Lagrange multipliers ; Mathematical models ; Mixing tank ; Sodium formate ; Solid-liquid mixing ; Mixing ; Computer simulation ; Dissolution ; Fluid structure interaction ; Large eddy simulation ; Sodium compounds ; Turbulent flow ; Mixing
  8. Source: Communications in Nonlinear Science and Numerical Simulation ; Volume 13, Issue 2 , 2008 , Pages 380-399 ; 10075704 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1007570406000918