JMBC Contact Groups

Multiphase Flow

The objective of the Contactgroup Multiphase Flow is to stimulate interaction and collaboration between researchers, developers, and users in the area of multiphase flow from universities, institutes and industries. This is done through organizing regular meetings (once or twice per year) aimed at getting to know each other's activities and to learn about developments and applications of multiphase flow technology. This will provide a good forum to identify the needs of the users and to bring to the attention new possibilities for applying multiphase flow research results. Industry, a research institute or a university in turn act as host of the meetings. The program consists of a series of lectures on a specific theme and a visit of some of the local multiphase flow facilities. Examples of themes covered are: dynamic multiphase flows, multiphase flows with surface-active agents, multiphase flow  measurements and innovation with multiphase flow.
Prof.dr.ir. RAWM Henkes | TUD and Dr.ir. NG Deen | UT

Computational Fluid Dynamics (CFD)

The purpose of the contactgroup CFD is to give CFD-researchers and users of CFD in universities, laboratories and industries in The Netherlands and Belgium the opportunity to get to know each other and to get acquainted with each other's work. The 58th meeting was held April 3, 2008 at TU Eindhoven. It was organized together with the Werkgemeenschap Scientific Computing (WSC). Eight young researchers were given the opportunity to present their PhD projects. The meeting attracted about 45 attendants.
Prof.dr.ir. AEP Veldman | RUG

Combustion

The JMBC has groups active in combustion research at the universities of Delft, Eindhoven, Groningen, Nijmegen and Twente. The contactgroup combustion is an informal network between these groups. The groups play an important role in the organisation of the symposia of the Dutch section of the Combustion Institute, which is part of the international Combustion Institute, an international forum for scientific combustion research. These groups also have formed the STW-platform 'Clean and Efficient Combustion' to enhance the mutual collaboration between the different groups and to interest more industrial parties for the fundamental research on combustion. The COMBURA (Combustion Research and Application) symposium, was held on October 10, 2008, as a joint initiative of the Platform Clean and Efficient Combustion, the NVV (Nederlandse Vlamvereniging, and the Dutch Section of the Combustion Institute. The Combustion Technology Group at the Eindhoven University of Technology organised a conference on 'DNS and LES of reactive flows', held in Maastricht, October, 22-24, 2008. In 2008 the members of the combustion group have been very successful in acquiring funding for their research. STW has granted eight new projects in the frame of the research program on 'Clean combustion concepts (CCC)'. CCC's are a set of new revolutionary combustion methods which combine very high efficiency with extremely low emissions of unwanted pollutants. The program was proposed by five JMBC professors in collaboration with representatives from industrial partners (Corus, Shell, Daf). Program leader is Prof. Philip de Goey from TU/e and program co-leader is Peter Hoppesteyn from Corus. The budget, including an industrial contribution of more than 25%, is over 6 M€. The approved projects all with participation of JMBC groups, are:
flexFLOX: Flameless combustion conditions and efficiency improvement of single- and multi-burner-FLOX furnaces in relation to changes in fuel and oxidizer composition. Submitted by TU Delft (Roekaerts, Tummers and de Jong)
XCiDE: Crossing the Combustion modes in Diesel Engines. Submitted by TU/e (Somers, Dam and de Goey))
ALTAS: Advanced low NOx flexible fuel gas turbine combustion, aero and stationary. Submitted by TU/e (Bastiaans, van Oijen and de Goey))
MoST: Multi-scale modification of swirling combustion for optimized gas turbines. Submitted by TU/e(Bastiaans, de Goey)) and U Twente (Geurts, van der Meer)
HiTAC Boiler: Heavy Fuel-oil combustion in a HiTAC boiler. Submitted by U Twente (van der Meer, Kok) and TU Delft (Roekaerts, Tummers).
ULRICO: Ultra Rich Combustion of Hydrocarbons and Soot Formation. Submitted by U Twente (Kok) and TU Delft (Roekaerts)
MILDNOX: NO Formation and fuel flexibility in dilute combustion. Submitted by U Groningen (Levinsky, Mokhov) and TU/e (van Oijen, de Goey)
BiOxyFuel: Torrefied Biomass Combustion under Oxy-fuel Conditions in Coal Fired Power Plants. Submitted by U Twente (Brem, van der Meer, Geurts) and TU/e (van Oijen, de Goey.
Prof.dr. DJEM Roekaerts | TUD

Lattice-Boltzmann Techniques

The contactgroup "Lattice-Boltzmann techniques" was established in 2002. It has initiated the JMBC course "Particle-based modeling". The lattice-Boltzmann research in the Netherlands covers a broad spectrum of applications. To mention a few: flow and scalar transport in porous media, biological flows, suspension dynamics, chemically reacting flows, turbulent flows. Lattice-Boltzmann schemes are part of the family of particle-based simulation techniques. In the lattice-Boltzmann method, (fictitious) particles move and collide on a regular lattice. With the proper collision rules and lattice topology, such a system mimics the dynamics of a real fluid. The power of the method lies in the geometrical flexibility, in the locality of its computational operations (intrinsic parallelism), and in the intuitive way in which multicomponent fluids can be represented.
Prof.dr. F Toschi | TUE

Turbulence

The objective of the contactgroup turbulence is to organize meetings between researchers of the J.M. Burgers Centre active in the field of turbulence. The purpose of these meetings is give the AIO/OIO's and other university researchers the opportunity to present their research results in an informal atmosphere and at the same time to promote a discussion on these results. The meetings also strengthen the contact between the researchers of the J.M. Burgers Centre and allows exchange of results and experience. During 2007 a meeting has been organized on April 19th by Prof.dr. D. Roekaerts at the Technical University of Delft. On this day the following presentations were given:
Dr. Ir. N.G. Deen (UT) - Detailed 3D modeling of mass transfer processes in two phase flows
with dynamic interfaces
Dr.ir. M. Tummers (TUD ) - Experiments in a turbulent diffusion flame
Ir. V. Huijnen (TU/e) - Modeling of soot in a turbulent diffusion flame
Dr.ir. R. de Lange (TU/e) - Boundary layer transition to turbulence through streak-streak interactions
Dr.ir. W.J.S. Uijttewaal (TUD) - The role of turbulence in shallow flows
Ir. P. Moore (TUD) - Computation and measurement of far field jet noise
Prof.dr.ir. BJ Boersma | TUD

Experimental Techniques

The Contact Group Experimental Techniques was initiated in 2002 when a number of the teachers and participants who were present at the JMBC course on Experimental Methods in Fluid Mechanics, felt the need for a platform on which experiments and experimental techniques can be discussed and evaluated. The main function of the contact group is to organize meetings in which the practice of experimenting can be discussed. In 2008/2009 we plan to organize another JMBC course on Experimental Methods in Fluid Mechanics. The course gives a broad overview of advanced experimental techniques commonly used in fluid mechanics laboratories.
Prof.dr.ir. J Westerweel | TUD and Dr. M Versluis | UT

Biological Fluid Mechanics

More and more research is conducted at the border between biology and fluid mechanics. This happens within many disciplines, from physiology (e.g. the interaction between blood flow and vessel walls) to aerodynamics (e.g. flapping flight). However, all deal with the interaction between fluids and a complex,
changing geometry. One of the main challenges is to bridge the gaps between physics (esp. fluid mechanics) and medical and health sciences. To stimulate this relatively young field of research and bring together researchers, a new contact group was started in 2006. While the contactgroup is formally a part of the J.M. Burgerscentrum, the participation from researchers from non-affiliated universities, medical centers and institutes is encouraged. Recent activities include mini-symposia in Delft (3ME-lab AHD, April 4, 2007), Rotterdam (Erasmus MC Thorax Centre, 15 November, 2007) and Wageningen (Experimental Zoology Group, September 9, 2008). Topics that were presented included: the role of shear stress in atherosclerosis, in vivo experimental techniques, cell - shear stress interaction, flapping flight, temperature control during cardiac surgery and the physics of ultrasound contrast bubbles. For autumn 2009 a new mini-symposium is tentatively scheduled. Besides, following the successful first JMBC course on "Biological Fluid Dynamics" in 2004, in 2009 a new course will be organized by C. Poelma (TU Delft), F.N. van de Vosse (TU Eindhoven) and A.A. van Steenhoven (TU Eindhoven, also chairman of SIG37 of ERCOFTAC). The JM Burgers Centre and the ERCOFTAC organization jointly support the course by advertising the course amongst their members, via the website and by some financial means. Topics will include: swimming and flying, interaction of plankton and turbulence, microcirculation, hemodynamics in large arteries, flow in flexible tubes, respiratory system, etc. Examples of relevant experimental techniques, as well as simulation techniques will be discussed. The last day a workshop will be held where participants will give a lecture about their PhD-work on Bio-fluid Mechanics. Finally, members of the contactgroup are active in the definition of a new FOM-program in the biofluid mechanics field.
Prof.dr.ir. AA van Steenhoven | TUE and Dr.ir. C Poelma | TUD

Microfluidics

The contact group "Microfluidics" was established in 2005 with a first meeting in Delft. The purpose of the contact group is to bring together students and postdocs interested in fluid dynamic aspects of microfluidics and give them a regular forum for presenting their results and exchanging ideas. Topics of interest include wetting and capillarity-driven flows, two-phase flow, drop generation and emulsification, contact line dynamics, flow visualization and measurement techniques. In 2008, a "topical day: two-phase flow" was organized together with the contact groups "two-phase flow" and "computational fluid dynamics" within the framework of the workshop on Micro- and Nanofluidics at the Lorentz Center in Leiden. In 2009, contact group members organize the first JMBC course "Capillarity-driven flows in microfluidics". The group will also organize a special session "Microfluidics, wetting, and thin film
flows" at the joint FOM-JMBC-industry meeting in June 2009. An additional scientific meeting will in fall will bring together students and postdocs of the contact group in fall 2009.
Prof.dr. F Mugele | UT, Prof.dr. J den Toonder | TUE, Philips Research, Prof.dr.ir. J Westerweel | TUD