"This handbook is a guide to numerical and experimental processes that are used to analyze and improve the efficiency of vertical axis rotors. Chapters present information that is required to optimize the geometrical parameters of rotors or understand how to augment upstream water velocity.
 
The authors of this volume present a numerical model to characterize the water flow around the vertical axis rotors using commercial CFD code in Ansys Fluent®. The software has been used to select adequate parameters and perform computational simulations of spiral Darrieus turbines. The contents of the volume explain the experimental procedure carried out to evaluate the performance of the spiral Darrieus turbine, how to characterize the water flow in the vicinity of the tested turbine and the method to assess the spiral angle influence on the turbine performance parameters. Results for different spiral angles (ranging from 10° to 40°) are presented.
 
 
 
This volume is a useful handbook for engineers involved in power plant design and renewable energy sectors who are studying the computational fluid dynamics of vertical axis turbines (such as Darrieus turbines) that are used in hydropower projects.
 
 
 
Key features:
 
- 4 chapters that cover the numerical and experimental analysis of vertical axis rotors and hydrokinetic turbines
 
- Simple structured layout for easy reading (methodology, models and results)
 
- Bibliographic study to introduce the reader to the subject
 
- A wide range of parameters included in experiments
 
- A comprehensive appendix of tables for mechanical parameters, statistical models, rotor parameters and geometric details."


Vertical Axis Hydrokinetic Turbines: Numerical and Experimental Analyses: Volume 5

End User License Agreement (for non-institutional, personal use)

6. Comparison Between Experimental and Computational Outcomes

Performance Investigation of Spiral and Spherical Turbines

Bentham Science Publishers

Mabrouk Mosbahi

Ahmed Ayadi 

"This book focuses on cases and studies of interest to mechanical engineers and industrial technicians. The considered applications in this volume are widely used in several industrial fields particularly in the automotive and aviation industries. Readers will understand the theory and techniques which are used in each application covered in each chapter.
 
 
 
The book contents include the following topics:
 
 
 
Numerical analysis of hydrokinetic turbines
 
Computational fluid dynamics of a CuO based nanofluid in mini-channel cross-sections
 
Orthodontic biomechanics of a NiTi arch wires
 
Reynold’s number effects on fluid flow through Savonius rotors
 
Effect of operating parameters on Zn-Mn alloys deposited from additive-free chloride bath
 
Optical properties and stability of a blue-emitting phosphor (Sr2P2O7:Eu2+) Under UV and VUV excitation
 
Numerical study of the influence of nanofluid type on thermal improvement in a three dimensional mini channel
 
Electrochemical studies and characterization of Zn-Mn coatings deposited in the presence of novel organic additives
 
Prediction of fire and smoke propagation under a range of external conditions
 
Structural design of a 10 kW H-Darrieus wind turbine
 
 
 
The presented case studies and development approaches aim to provide the readers, such as graduate students, PhD candidates and professionals with basic and applied information broadly related to mechanical engineering and technology."


Mechanical Engineering Technologies and Applications

Zied Driss

"Solar Chimney Power Plants: Numerical Investigations and Experimental Validation summarizes the effect of the geometrical parameters of a solar chimney on the airflow behavior inside a solar chimney power plant. Chapters in this experimental handbook are presented in two parts with the goal of equipping readers with the information necessary to study and determine key factors which affect the performance of the solar chimney power plant.
In the first part, the authors present a simulation developed by using computational fluid dynamics (CFD) modeling software ANSYS Fluent to model the airflow. The adopted CFD models include k-ɛ turbulence model, the DO radiation model and the convection heat flux transfer model. These models have been validated with anterior experimental results.
In the second part, the simulated models are then tested with alternate geometric configurations of the solar chimney power plant. The numerical studies allow readers to consider ways to expand on the design optimizing of the solar chimney when constructing a prototype. Geometrical parameters include the height, the diameter of the chimney and the dimensions of the solar collector and their effect on the temperature and air pressure is documented to validate models used for experimental simulations.
The handbook also includes a study of an experimental prototype, constructed at ENIS. The researchers have gathered data on the environmental temperature, distribution of the temperature, air velocity and the power output generated by the turbine, the solar radiation and the gap of temperature in the collector of the prototype. "


Solar Chimney Power Plants: Numerical Investigations and Experimental Validation

Haythem Nasraoui,

Moubarek Bsisa,

"This book focuses on cases and studies of interest to mechanical engineers and industrial technicians. The considered applications in this volume are widely used in several industrial fields particularly in the automotive and aviation industries. Readers will understand the theory and techniques which are used in each application covered in each chapter.
 
 
 
Volume 2 includes the following topics:
 
 
 
Numerical investigation of turbulent slot jets with various nanoparticle shapes
 
Experimental study on a sweeping gas membrane distillation unit
 
Development of design processes for multi-spindle drilling using a neural network and expert systems
 
Experimental investigation of a new hybrid solar collector (PV/t) system
 
Theoretical study of the effects of combustion duration on engine performance
 
Effects of preheating temperature and fuel-air equivalence ratio on pollution control in hydrocarbon combustion
 
Numerical study of natural convection between two concentric ellipses with different shapes and imposed temperatures
 
Theoretical study of the geometrical parameters effect on the behavior of a solar chimney power plant
 
Numerical investigations of the effect of packed bed porosity on the flow behavior
 
Comparison between a conventional and a four-stage Savonius wind rotor 
 
 
 
The presented case studies and development approaches aim to provide readers with basic and applied information broadly related to mechanical engineering and technology."


Mechanical Engineering Technologies and Applications: Volume 2

This book focuses on cases and studies of interest to mechanical engineers and industrial technicians. The considered applications in this volume are widely used in several industrial fields particularly in the automotive and aviation industries. Readers will understand the theory and techniques which are used in each application covered in each chapter.
 
 
 
Volume 3 includes the following topics:
 
 
 
Numerical simulations of three-dimensional laminar mixed convection heat transfer of water-based-Al2O3 nanofluid in an open cubic cavity with a heated block.
Nonlinear formulations of Element-Free Galerkin Method (EFGM) for large deformation analysis of Ogden’s hyperelastic materials, emphasizing incompressibility and mesh distortion avoidance.
Development of a 3D numerical model with LS-DYNA using a coupled SPH-FEM method to simulate hydraulic behavior of a Ski-Jump Spillway with dentates, showcasing precision through validation.
Exploration of enhancing the inlet system of an LPG-H2 fueled engine using a static inclined blade turbine, analyzed through Computational Fluid Dynamics (CFD) simulations.
Effective utilization of Artificial Neural Networks (ANN) in heat transfer applications, addressing issues like fouling in heat exchangers, showcasing their accuracy compared to experimental data.
Investigation of the impact of nitrogen concentration on the structure and properties of ZrN coatings deposited by magnetron sputtering, evaluating variations in structural and mechanical properties.
Forced convection in a horizontal cylindrical pipe with pseudoplastic fluid, considering uniform constant heat flux and uniform temperature as boundary conditions.
Modeling and experimental study of a water solar collector coupled to an optimized solar still, aiming to enhance freshwater production in a solar distillation system under specific climatic conditions.
Exploration of the effect of film thickness on the structure and properties of Ti-N films deposited by magnetron sputtering, utilizing theoretical and experimental analysis to confirm the rock salt TiN structure.
 
 
The presented case studies and development approaches aim to provide readers with basic and applied information broadly related to mechanical engineering and technology.
 
 
 
Readership
 
Graduate students, PhD candidates and professionals seeking basic and applied information related to mechanical engineering and technology.

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Vertical Axis Hydrokinetic Turbines: Numerical and Experimental Analyses: Volume 5

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