Facilities

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Computational Facilities

In the computational field and besides the numerous latest version PCs and Work Stations, LTT/NTUA established in 1994, the supercomputing facility of NTUA, with a Silicon Graphics Power Challenge (14 R8000 processors) and an Inlet Paragon (48 nodes). This year LTT/NTUA’s initiative, the National Simulation Facility is created, which will possess Hewlett Packard platform, of a Linpack power of around 50 GFLOPS.

 

Experimental Facilities

Low-speed section

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3-D probe calibration tunnel

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Two Free Jet calibration stands

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Air Source (50 KW installed power, 800 mm of water ahead)

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Low speed axial compressor test rig

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Linear cascade tunnel

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Annular cascade tunnel

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Test stand for blower characteristics

High-speed section

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Axial and radial compressor test rig (750 KW installed power, maximum speeds 24000 to 80000 rpm. Transonic radial and transonic axial compressor stages  are available)

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Transonic peripheral cascade facility with rotating hub.

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Turbine-Compressor test rig (capacity of 420 KW, speed up to 80000 rpm)

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Turbocharger test stand

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Small gas turbine (50 KW power)

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Small Jet Engine (educational)

 Measuring equipment:

        Instrumentation for measuring almost all quantities related to operation of turbomachines is available namely:
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A variety of pressure transducers and corresponding conditioners

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Thermocouples and RTD's for temperature measurements

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Multihole probes for measurement in 2-D and 3-D flow fields

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Hot-wires for fast response flow velocity measurements in 2-D and 3-D flows

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Fast response pressure transducers

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A 3-D LDA system , with fiber optics, comprising a 1D and 2D system , for simultaneous three component velocity measurements

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Various accelerometers for vibration measurements

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Proximity probes for shaft position measurements

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Microphones, for acoustic measurements

 

    All measurements can be performed by computerized and remote controlling Data Acquisition. The following systems are available:
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A high speed system, with 32 simultaneous channels and maximum capability of 2 Ms/second.

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Several medium speed systems, with 16 channels each and maximum capability of 100 Ks/s.

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Several low speed systems, with 32 channels each and maximum capability of 25 Ks/second.

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Portable system, with 16 channels, 250 Ks/s, for in situ measurements.