1. optimal control
Algorithms of the control were derived and implemented in the code and were applied to test cases including both boundary layer flow and cylinder flow.
Particular attention was paid to the surface condition, such as drag reduction on oscillating bodies. A resonance frequency at which free-stream disturbance is greatly amplified was found at such oscillating conditions.
Reduced-order model of the evolution of free-stream disturbance was further developed, aiming at generating signal for control systems based on remote sensing. This has been tested in flow around a flat plate.
Other forms of drag reduction control were also tested including plasma-based actuation, flexible filaments, polymer materials, etc.
2. fluid & heat transfer
The interaction of fluid flow and heat transfer in a nanoscale pipe was thoroughly studied. An analytical solution was obtained and it is further validated by molecular dynamics simulations.
Drag reduction in lubricated pipe flow with a slip boundary condition and a sudden contraction was also studied and the results have been submitted for journal publication.
Coupled solver for fluid and heat transfer was developed for simulations in turbomachinery. It was observed that the heat transfer has limited influence to the fluid flow, which, however, imposes significant feedback to the heat transfer.
3. surface texture.
Experimental study was performed to design supericephobic surfaces in joint projects. This has been submitted for journal submission.
Various surfaces, such as superhydrophobic, deformable, permeable, etc, have been numerically modelled and simulated to find their drag reduction potentials.
13 journal papers were published / submitted.
Two conferences, two workshops and two summer schools are organized.
International conference on drag redution has been organised as a part of the Deliverable D5.3.
Project website to disseminatoin our activities and results was established as a part of the Deliverables D5.1.
Business modelling of the research conducted and the exploitation plan has been made as a part of the Deliverable D5.4.
Dissemination and communication report has been completed as a part of the Deliverable D5.5.
