Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21798
Title: An efficient Petrov-Galerkin Chebyshev spectral method coupled with the Taylor-series expansion method of moments for solving the coherent structures effect on particle coagulation in the exhaust pipe
Authors: Chan, TL 
Xie, ML
Cheung, CS 
Keywords: Coagulation
Exhaust pipe
Moment method
Nanoparticles
Spectral
Issue Date: 2009
Publisher: Norcross
Source: CMES - computer modeling in engineering and sciences, 2009, v. 51, no. 3, p. 191-212 How to cite?
Journal: CMES - Computer Modeling in Engineering and Sciences 
Abstract: An efficient Petrov-Galerkin Chebyshev spectral method coupled with the Taylor-series expansion method of moments (TEMOM) was developed to simulate the effect of coherent structures on particle coagulation in the exhaust pipe. The Petrov-Galerkin Chebyshev spectral method was presented in detail focusing on the analyticity of solenoidal vector field used for the approximation of the flow. It satisfies the pole condition exactly at the origin, and can be used to expand the vector functions efficiently by using the solenoidal condition. This developed TEMOM method has no prior requirement for the particle size distribution (PSD). It is much simpler than the method of moment (MOM) and quadrature method of moments (QMOM), and is a promising method to approximate the aerosol general dynamics equation (GDE). The coupled fluid and particle fields were presented with three non-dimensional parameters (i.e., Reynolds number, Re; Schmidt number based on particle moment, ScM, and Damkohler number, Da in the governing equations). The temporal evolutions of the first three moments were discussed for different Damkohler numbers. The particle volume increases at all locations in the flow field, the larger the Damkohler number, the greater generation rate of large-scale particles. Far away from the eddy structure, the effect of the fluid convection on particle coagulation is small; however, the particle coagulation within the eddy core has an obvious wave-like distribution because of the large-scale eddy. The results reveal that the coherent structures play a significant role in the particle coagulation inside an exhaust pipe.
URI: http://hdl.handle.net/10397/21798
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

3
Last Week
0
Last month
0
Citations as of Apr 30, 2016

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
0
Citations as of Feb 20, 2017

Page view(s)

13
Last Week
0
Last month
Checked on Feb 19, 2017

Google ScholarTM

Check



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.