| View Larger Image | Motion of micro-particles in channel flow [An article from: Atmospheric Environment] | Digitalby C.F. You (Author), G.H. Li (Author), H.Y. Qi (Author), X.C. Xu (Author)
| List Price: | $8.95 | | | Available: | Available for download now |
| | Binding: | Digital | | Publisher: | Elsevier | | Publication Date: | April 01, 2004 |
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Product Description
This digital document is a journal article from Atmospheric Environment, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: The motion of micro-particles in channel flow was investigated using the DNS method for Re=3300 (based on center velocity and half channel width). The calculations used the fractional projection method to directly solve the Navier-Stokes equations, and the explicit third-order Runge-Kutta method for the time integration. A higher order finite difference scheme was used to discretize the fluid dynamics equations. The numerical results provided the two-phase flow field in the near-wall region with micro-particles. The simulation results showed that particles with Stokes number on the order of 0.1 tend to congregate near the wall while the micro-particles 1@mm in diameter distribute homogeneously in the whole flow field. Simulations of micro-particulate matter movement using the @k-@e turbulence model applied to the same problem as the DNS analysis showed that the turbulence model could not accurately predict the micro-particle motion in the turbulent flow near the wall, with higher particle concentrations close to the centerline and lower concentrations near the wall. |
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