Laboratories

In the TFE group we have various laboratories close to each other with joint large-scale and small-scale experimental facilities in Energy Technology, Combustion Technology and Process Technology. In addition a lab dedicated to microfabrication, the Microfab Lab, and to transport in porous media, the Darcy Lab, is housed. TFE has a joint laboratory staff. All required disciplines and technical support levels are provided by the laboratory staff.

The different labs are introduced below. Some information about the computer infrastructure is presented also.

Central laboratory

In the central laboratory the large-scale test rigs can be found.

Laser laboratories

For the experimental research use can be made of several specially equipped laser laboratories. The TFE lab possesses 3 continuous Ar-ion lasers (used for flow visualization and LDV), 4 pulsed Nd:yAg lasers (single-pulse 10 Hz and 30 Hz, and two double-pulse 15 Hz for PIV) and 1 tunable dye-laser (for spectroscopic measurements like LIF). For data recording, a number of camera’s are available, including a Princeton instruments ICCD-576 camera (for spectroscopic techniques), an ultra-fast Phantom v7.1 (34 kHz @ 192x256) camera, a PCO 1200HS (625fps @1600x1200) and five kodak ES-1.0 camera’s (for 2D-PIV/PTV measurements and flow visualization) and four kodak ES-2020 camera’s (for 3D-PTV measurements). In combination with several real-time data-acquisition systems (including a DVCR 5000 high-speed system for 3D-PTV) and commercial software (Dantec Flowmap, Dantec BSA and PIVtec), non-commercial software (3D-PTV algorithm developed at ETH, Switzerland) and software developed in-house for post-processing of the measurement data, it is possible to calculate velocity, temperature, and/or concentration fields.

Climate chamber

For specialized measurements in the area of heat transfer in humans, use can be made of a climate chamber in which the temperature can be controlled between 15 and 40 0C and the relative humidity between 10 and 90%. An infrared camera (temperature range from –20 to +350 0C and spectral range from 7.5 to 13μm) is available to measure human body temperatures.

Machine shop

A workshop exists within the laboratory, in which new set-ups and modifications of existing set-ups are constructed. The workshop contains one 3D CNC machining center, seven conventional machining devices and one CNC spark-erosion machine.

Computer software

A large part of the simulation software has been developed in the laboratory, using modern numerical methods. In some cases, especially for calculations in complex geometries, use is made of software packages for Computational Fluid Dynamics. The laboratory currently uses SEPRAN, Fluent, ComSol and kiva3V for this purpose. thermocouples) to construction of high-temperature (biomass gasifier), high-pressure (combustion cell) set-ups and full-scale process equipment.

Computer hardware

For very large numerical simulations use can be made of national supercomputer facilities in Amsterdam. For development and testing purposes and for somewhat smaller simulations, a number of Linux-cluster computer systems are available. The fastest are: a cluster of 6 quad-eight core AMD Opteron 6136 and 6 quad-six core Intel Xeon X5650, a cluster of 46 dual-quad core AMD Opteron 2378 processors, a cluster of 22 dual-dual core Xeon 5130 processors.