Transport Phenomena in Engineering Problems: CFD-Based Computational Modeling
Computational Fluid Dynamics is a popular modeling approach which utilizes numerical methods and computer simulations to solve and analyze problems that involve transport phenomena in fluid flows. CFD-based models demonstrate high versatility and capabili
- PDF / 832,900 Bytes
- 14 Pages / 439.37 x 666.142 pts Page_size
- 89 Downloads / 285 Views
Abstract Computational Fluid Dynamics is a popular modeling approach which utilizes numerical methods and computer simulations to solve and analyze problems that involve transport phenomena in fluid flows. CFD-based models demonstrate high versatility and capability of dealing with a wide range of engineering problems. This chapter presents two examples of CFD-based computational modeling successfully applied for different fields of engineering: particle engineering by drying processes and thermal management. Keywords Computational fluid dynamics · Design · Modeling · Numerical simulations · Particle engineering · Thermal management · Transport phenomena
1 Introduction Many contemporary engineering problems involve flows of liquid and/or gas, transport of heat by conduction, convection and radiation mechanisms, mass transfer by diffusion and convection, flows of bubbles, drops or particles, combustion etc. These complex problems require fundamental understanding that cannot be provided only by available experimental techniques, and therefore theoretical and numerical modeling are essential. Recent progress in computer industry stimulated fast development of computational approaches, among them Computational Fluid Dynamics (CFD). This is a wide spread modeling approach which utilizes numerical methods and computer simulations to solve and analyze problems that involve transport phenomena in fluid flows. Lots of commercial and open computer codes are implementing CFD techM. Mezhericher (B) Department of Mechanical Engineering, Shamoon College of Engineering, Bialik/Basel Sts., Beer Sheva 84100, Israel e-mail: [email protected] G.-C. Yang et al. (eds.), IAENG Transactions on Engineering Technologies, Lecture Notes in Electrical Engineering 229, DOI: 10.1007/978-94-007-6190-2_15, © Springer Science+Business Media Dordrecht 2013
187
188
M. Mezhericher
nique: ANSYS FLUENT, ANSYS CFX, FLOW-3D, STAR-CD, COMSOL CFD, OpenFOAM, OpenFVM and many others. This book chapter presents two examples of CFD-based computational modeling successfully applied for different fields of engineering: particle engineering by drying processes and thermal management of a car compartment. In spite of apparent differences, these two models have common roots in description of transport phenomena of the fluid phase.
2 Particle Engineering by Drying Processes 2.1 Spray Drying Spray drying is a widely applied technology utilized to transform solutions, emulsions or suspensions into dry granules, and particle agglomerates, by feeding the liquid mixture as a spray of droplets into a medium with a hot drying agent. Because spray drying can be used either as a preservation method or simply as a fast drying technique, this process is utilized in many industries, such as food manufactures, pharmaceutical, chemical and biochemical industries. Spray drying is a rapid process (up to several seconds) compared to other methods of drying (e.g., pulse combustion drying, drum drying, freeze drying) due to the small spray droplet sizes and their large specifi
Data Loading...
