'Introduction to CFD' Collection
- How to Get Started with Computational Fluid Dynamics
- How to Ensure that CFD for Industrial Applications is Fit for Purpose
- International Journal of CFD Case Studies Vol. 9
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C. T. Shaw
First Published - March 2002
Softback, 35 Pages
This booklet reviews how CFD simulations are run and the requirements needed to do this in terms of software, hardware and suitably skilled people. It has been written toguide those who make commercial decisions about the use of CFD technology andso it is aimed mainly at the industrial user. However, it also has relevance for other users, such as academics seeking to start work in this field.
It discusses the steps that are needed to develop a CFDanalysis capability including assessing the need for CFD, obtaining suitable hardware and software, finding and training staff, validating test cases andestablishing CFD procedures.
It is hoped that the reader might avoid the common pitfallsthat occur when getting started with CFD and will be confident in establishinga CFD capability tuned to their organisation’s requirements.
C. J. Lea
First Published - July 2010
Softback, 92 Pages
This book examines the issues which should be considered when making decisions on the allocation of resources. It aims to show how to maximise the usefulness of CFD simulation by making optimum use of resources.It provides examples and guidance on how to undertake CFD which is fit for purpose.
It is often the case that idealisation and thus simplification of the flow problem and CFD modelling approach is the key to ensuring that simulations fulfil project requirements. Therefore, a major focus of this book is on the areas in which idealisation and simplification can be fruitful.
The scope of the book is primarily the application of CFD to complex industrial flows. However, there is often no clearly defined boundary between industrial and other flows. For example, although the prime aim of a simulation may be to ensure that drug delivery to the lungs is effective – and this is clearly a biomedical flow - this may in turn require the modelling and optimisation of the design of a spray inhaler. In addition, examination of the treatment of complex flows in other application areas can lead to a use fulcross-fertilisation of ideas. With this in mind, the book also draws on examples from application areas such as fire safety in the built environment,marine hydrodynamics, as well as biomedical flows. Furthermore, although the book focuses on complex CFD applications, the principles and practice of CFD which is ‘fit for purpose’ are applicable to all CFD simulations – whether complex or otherwise.
The book is written for the relatively new CFD user who is faced with a range of industrial applications of significant complexity, rather than experienced users with considerable CFD knowledge in their particular application areas. In fact, this book seeks to close the gap between the relative newcomer and the expert user. It shows how to make the best use ofresources, by outlining the principles and practice of idealisation and simplification.
The book is of most relevance to the users of general-purpose and application specific CFD software that provides a wide range of options when meshing, in selecting physical and numerical sub-models and boundary conditions, in obtaining and interpreting flow solutions. Nevertheless, users of all manner of CFD tools should find some benefit from this book. In general, the book focuses on turbulent industrial flows in which the Reynolds averaged Navier-Stokes equations are solved. Mention is made of more advanced approaches to the simulation of turbulence, namely Large Eddy Simulation, but details of this approach are beyond the scope of the present volume.
Published - June 2011
Softback, 65 Pages
The ninth volume of the Journal presents a selection ofpapers where authors have faced the task of using CFD where industrial engineering reality demands additional thought or application.
Each paper presents models or techniques to extend or enhance the standard CFD modelling. The paper by Kahrimanovic et al deals with the design of high temperature duty cyclones where the wall roughness model is extended to account for joints between the refractory brick lining.
The heat transfer in an automotive headlamp, discussed in the paper by Mielke et al, requires an approach where CFD is conjoined with other software to simulate the high levels of thermal radiation.
The increasing trend of replacing expensive experimental tests by simulation or “virtual testing” is contributed to in the paper bySayma. Here a method is proposed that allows for the simulated variation of rotational speed and throttle changes of a gas turbine compressor, mimickingits performance in a test rig.
The paper by Schöck et al deals with the laminar mixing of highly viscous fluids where, with normal methods, numerical diffusion would dominate the actual molecular diffusion. A trajectory method is applied to overcome this limitation.
The simulation of industrial paint dryers requires accurate heat transfer methods when applied to complicated shapes. The difficulty in industrial applications is selecting the right turbulence model and deciding appropriate local wall mesh density. This is discussed in the paper by Ye et al.