Description
Areas of application
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Inlet parameters: Investigation of the influence of inflow parameters on the operating behavior of exhaust gas diffusers
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Support ribs: Analysis of the effects of support fins on the secondary flow in ring diffusers
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Optimization: Development of more efficient design guidelines for exhaust gas diffusers
Technical setup and operation
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Air flow: Ambient air is directed radially-axially into the ring diffuser via a pre-swirl generator, which is optionally equipped with support ribs
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Trailing vanes: Rotating spoke wheel simulates realistic turbine outflows and generates wake dents
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Variable parameters: Adjustable parameters such as mass flow, speed, pre-swirl and gap flow to simulate different turbine operating points
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Calming chamber: Air flows through a conical diffuser into a calming chamber with honeycomb rectifier
Measurement technology
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Pressure and temperature measurement: Steady and unsteady pressure sensors, temperature measurement technology type K
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Traversing: Radial traversing with multi-hole flow vector probes and hot-wire probes
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Flow analyses: 3D CTA and 2D LDA probes for velocity and turbulence measurements
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PIV: Particle Image Velocimetry for visualizing complex flow fields
Specifications
Mass flow rate | 7 kg/s |
Mach number at the diffuser inlet | 0,1 |
Reynolds number at the diffuser inlet | 4x105 |
Wake generator | max. 3.000 1/min |
Various diffuser geometries | |
Variable angular momentum at the inlet | |
Variable gap mass and angular momentum flow rate |