Front Cover -- Related titles -- Developments in Turbomachinery Flow: Forward Curved Centrifugal Fans -- Copyright -- Dedication -- Contents -- List of figures -- List of tables -- About the authors -- Preface -- 1 - General introduction of forward-curved squirrel-cage fan -- 1.1 Introduction -- 1.2 Fan geometry -- 1.3 Flow field -- 1.4 Fan performance and noise measurements -- 1.5 Fluid-flow simulation in centrifugal fans -- 1.6 Velocity measurement techniques and their considerations -- 1.7 Final remarks -- Further reading -- 2 - Inlet configuration -- 2.1 Why the inlet is important? -- 2.2 Bell-mouth inlet -- 2.3 Outward inlet -- 2.4 Final remarks -- Further reading -- 3 - Rotor -- 3.1 Half-cone rotors -- 3.2 Lean angle in rotor blades -- Further reading -- 4 - Volute -- 4.1 Volute flow -- 4.2 Slip factor -- 4.3 Volute optimization -- 4.4 Volute width -- 4.5 Double-outlet volute -- 4.6 Final remarks -- Further reading -- 5 - Noise in forward-curved centrifugal fans -- 5.1 Sound parameters -- 5.2 Different types of noise -- 5.3 Modelling of sound generation in fans -- 5.4 Effect of fan components on sound generation -- 5.5 Sound generation of double-outlet squirrel-cage fans -- 5.6 Final remarks -- Further reading -- 6 - Contribution of jet-wake-volute interactions to flow characteristics and turbulence models -- 6.1 Role of nonintrusive measurements on examination of complicated turbulent flows -- 6.2 Jet-wake interactions with the volute flow -- 6.3 Geometrical characteristics of tensorial-flow quantities -- 6.4 Challenges in turbulence modelling -- 6.5 Final remarks -- References -- Index.
Developments in Turbomachinery Flow: Forward Curved Centrifugal Fans explores the forward curved squirrel cage fan as an excellent instrument for fluid mechanics research in turbomachines. The book explores phenomena such as jet/wake interaction, circulation, separation and noise in turbomachines, also addressing the characteristics that are specific to this fan and applications in other centrifugal turbomachines. Chapters begin with a general introduction that includes research techniques and a survey of older research, and then proceed into a detailed description of improvements for different parts of the fan, including the inlet, the rotor and the volute. Final sections include a comprehensive discussion on geometrical modifications that could improve performance without impacting cost. Explores how forward curved centrifugal fans have wide industrial application Discusses the strong trade-off between fan aerodynamics and construction cost Provides a wide selection of optimums for geometrical configuration Introduces new geometries that can improve performance and reduce noise for the same construction cost Presents fluid phenomena as a potential research field for this fan.