We present the current understanding and state-of-the-art of atomization fundamentals, their realization in atomizer systems and their application in a wide variety of engineering branches, including spray drying, spray coating, spray cooling, fuel injection, etc. The course is offered by the profile area Thermo-Fluids & Interfaces in cooperation with DFG SFB/TRR 75.
From theory to practice
These aspects are first addressed theoretically in terms of hydrodynamic instabilities of liquid jets and sheets – primary atomization. This is followed by considerations about the break-up of single droplets – secondary atomization. Engineering solutions for realizing the different atomization mechanisms are then presented.
The second day is devoted to experimental descriptors and diagnostics of sprays and droplets. Both non-optical and optical techniques are addressed. Focus is placed on drop size and velocity determination, but an overview is also given about more advanced techniques, allowing temperature and composition to be determined.
Modeling and Simulation
The third day presents possibilities for simulating atomization and spray processes. Modelling of primary atomization is discussed, as well as transport processes within sprays and spray/wall interactions.
The final day of the course covers a wide variety of applications and how spray systems have been developed and customized to meet specific requirements and constraints.
Discuss with renowned experts and get in touch with people from the industry
The program foresees intensive discussions between the participants and the lecturers and also among the participants. The aim is to address on-going development and application problems suggested by the participants. Industrial exhibitors of spray diagnostics will be available on the second day for demonstrations and discussions.
For detailed description and program see the course flyer an the website.
The course language is English.
Monday, February 19: Fundamentals
8:30 Registration, Distribution of Lecture Notes
9:00 Welcome, Introductions, Overview of the Course (Tropea)
9:30 Techniques of Atomization: Overview of Atomizers and Their Applications (Tropea)
11:00 Stability Analysis of Liquid Jets and Sheets (Brenn)
13:00 Design of Spraying Devices I (Walzel)
13:45 Fundamentals of Atomization (Roisman)
15:00 Design of Spraying Devices II (Ashgriz)
15:45 Secondary Atomization (Roisman)
16:30 Drop-Drop Interactions (Brenn)
17:15 Close of First Day with Beer and Pretzels
Tuesday, February 20: Characterisation and Diagnostics
9:00 Spray Characterisation – Quantifiers and Standards (Tropea)
9:45 Imaging Techniques (Leick)
11:00 Phase Doppler Techniques (Tropea)
13:00 Other Optical Techniques (Tropea)
13:45 Measurement of Drop Temperature and Composition (Lemoine)
15:15 Atomization of Highly Viscous Liquids (Ashgriz)
16:00 Atomization of Complex Fluids (Brenn)
16:45 Flash Boiling Atomization (Sher)
17:30 Close of Second Day
Wednesday, February 21: Modeling and Simulation
9:00 Direct Numerical Simulation of Primary Jet Breakup (Weigand)
11:00 A Survey on Numerical Simulation Methods for Multiphase Flows (Bothe)
11:45 Volume-of-Fluid Method for Drop Collision (Bothe)
13:30 Fundamentals of Modelling (Yarin)
14:15 Heat and Mass Transfer from Drops: Fundamentals (Brenn)
15:30 Powder Production in Spray Processes (Fritsching)
17:00 Case Studies in Atomizer Design (Walzel)
17:45 Close of Third Day
19:00 Course Dinner
Thursday, February 22: Applications & Advanced Topics
9:00 Atomizers for Fuel Injection (Leick)
10:00 Drop/Wall Interactions (Yarin)
11:15 Spray Painting (Chandra)
12:00 Atomization in Forensic and High Power Applications (Yarin)
13:45 Spray Coating (Chandra)
14.30 Droplet Impingement Cooling with Evaporation (Stephan)
15:15 Spray Cooling (Roisman)
16:00 Close of Short Course