Simulating the Gas Flow Pattern

We first discuss simulation of the gas flow pattern. We will outline what it means to write finite difference equations for CFD simulations, and explain briefly the principle behind turbulence modeling. There exists an extensive literature on CFD, in general, and CFD in cyclones in particular. However, it is not possible to cover all the detail here, and so our discussion will have to be qualitative. The reader is referred to the literature for further information. 

The CFD technique is introduced in the book of Patankar (1980). This book is now dated in terms of computational capabilities, and in some of the most recent methods used, but it is an excellent and very lucid introduction to the principles behind CFD. We can warmly recommend it. Another introduction is by Versteeg and Malalasekra (1996). 

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