Next generation and innovative instrumentation Joint Research Activity

Tasks

Task 1: High speed processing module (VRI-E)

In this task, VRI-E (http://www.visionresearch.com/About-VRI/) shall develop a high-speed processing module that is used in combination with a CineMag-enabled high-speed CMOS camera manufactured by VRI-E (http://www.visionresearch.com/Products/Accessories--Options/CineMag--Cinestation/). Design of the module is done entirely by VRI-E. The module contains one or more Xilinx FPGA’s, associated memory, a control
processor and external access circuitry. This module enables specialized data processing and enables a new level of performance and analysis. Two prototype modules are to be produced by this program.

Task 2: Instrumented particles (SMARTINST)

The goal of this task is to develop the Instrumented Particle (IP or smartPART) concept for turbulence measurements of acceleration, pressure and optical absorption. In IPs, the signal from on-board sensors is conditioned and sent via a radio link to the smartCENTER, where it is decoded and stored in real time. The IP shall be customized for use in facilities using liquids as working fluids, such as TTF, GTF, and Coriolis, with a tailored radio-reception demodulation device and acquisition software.

The smartPART is based on original work performed at CNRS-a on the Lagrangian dynamics of turbulence. It was developed for the study of heat transport in Rayleigh-Bénard convection [Rev. Sci. Instr. 78 (2007)], where it has demonstrated the leading role of thermal plumes [Phys. Rev. Lett. 99 (2007), Physics Today Jan (2008)]. Further developments are underway to add pressure and acceleration measurements to the particles.

SmartPARTs are density matched for operation in water with a diameter of 25mm. They are, at present, mainly used in low speed flows, such as those in chemical engineering processes. Instrumentation and hardware developments are required to reach the high speed and resolution requirements for operation in turbulent flows generated in EuHIT facilities using water or water-gas flows. Development allows for local acceleration and pressure measurements. Optical absorption measurements shall be added because of its interest for 2-phase flow analysis. IPs will then perform simultaneous acceleration and pressure (or acceleration and absorption) measurements. Related software developments concern both the IP embarked firmware and the processing stage in the smartCENTER unit. A milestone of this task after 18 month [missing MS at M18 in milestones list] is the availability of a working smartPART prototype and associated smartCENTER, together with a progress and performance report. This leads to a GO-noGO decision. The final deliverable, after 24 months, consists in smartPART and smartCENTER units with industry-grade reliability and available as an "off the shelf" product for TNAs.

Task 3: Laser-Cantilever-Anemometer (UNOL)

This task leads to the development of an optimized 2D Laser-Cantilever-Anemometer for resolving 2D (vx,vy) wind fields at a spatial resolution in a 100μm region with a frequency resolution up to 100kHz. The Laser-Cantilever-Anemometer (LCA) in its 1D & 2D versions was developed in the UNOL research group by three PhD students and several Diploma students [Rev. Sci. Instr. 76, (2005)]. It is based on the principle of
an atomic force microscope (AFM). The small, micro-structured cantilever is brought into the flow where the deflection of the cantilever contains the information about the flow velocity. The deflection is detected by the reflection of a laser beam, which is focused on the tip of the cantilever. The reflected beam hits a position sensitive detector (PSD) whose output signal depends linearly on the position of the reflected laser beam. With the specially designed cantilever (including a vane) UNOL succeeded to measure the bending and twisting at the same time, resulting in 2D velocity measurements. At the project start, the LCA has the status of a prototype that has been operated by a person experienced to it. In the project, the handling of the 2D LCA shall be improved by changing the support of the cantilever. Thereafter, an optimized calibration procedure shall be established to enable untrained persons to operate the 2D LCA. Within the course of project, the WP partners will test the LCA and build a small number of prototypes (D19.3) for the use at these TNA facilities, where the cantilevers’ size have to be adapted for each experiment and facility, respectively.