Computational Fluid Dynamics
for fans and plants – Part 2

Summary: After the mathematical fundamentals of the computational fluid dynamics (CFD) as well as the implementation and applications of CFD simulations had been dealt with in part 1 (ZKG 05/2011, p. 48), the second part deals with the description of examples of application for the optimization of large fans. The article is complemented by simulations on the web site www.zkg.de/fans .

1 Introduction

Computational Fluid Dynamics (CFD) is a method that is used for the computerized calculation of technical flows with state-of-the-art accuracy. With this method, it is possible to make far more precise statements regarding the behaviour of a technical or natural flow than could be made on the basis of classical partly-empirical, test-based approaches. CFD has been employed on an economic scale since around 1973, when it was first applied in the aircraft construction sector. The underlying partial differential equations according to Navier-Stokes, which precisely describe the flow...

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