Pre-Evap­o­ra­tor Test Stand / Op­ti­cal High-Pres­sure Atom­iser (OHZ)

Time-resolved shadow images
Time-re­solved shad­ow im­ages
Image 1/5, Credit: DLR (CC-BY 3.0)

Time-resolved shadow images

Mea­sur­ing sec­tion with mea­sur­ing set-up for pulsed LED il­lu­mi­na­tion for time-re­solved shad­ow im­ages.
Measuring section OSSI
Mea­sur­ing sec­tion OS­SI
Image 2/5, Credit: © DLR. All rights reserved

Measuring section OSSI

Op­ti­cal Swirling Spray In­jec­tor (OS­SI) with open spray cham­ber and PDA mea­sur­ing set-up.
Overview
Overview
Image 3/5, Credit: DLR (CC-BY 3.0)

Overview

Overview of the test track at the OHZ test stand.
Overview
Overview
Image 4/5, Credit: DLR (CC-BY 3.0)

Overview

Overview of the test track at the OHZ test stand.
Assembly
As­sem­bly
Image 5/5, Credit: © DLR. All rights reserved

Assembly

As­sem­bly of the mea­sur­ing sec­tion OS­SI (Op­ti­cal Swirling Spray In­jec­tor).

This measurement facility at the DLR Institute of Propulsion Technology in Cologne offers the possibility of investigating the atomisation, evaporation and mixing of kerosene under realistic conditions using optical methods.

Optical investigation of fuel in gas turbines

Researchers at German Aerospace Center (DLR) are investigating the precise processing of liquid kerosene in newly developed burners at the OHZ facility in Cologne, also referred to as the Pre-Evaporator Test Stand. Flow rate and the high operating pressures and temperatures typically found in combustion chambers have a significant influence on the atomisation, evaporation and mixing of liquid fuel.

The OHZ and its Optical Swirling Spray Injector (OSSI) measuring facility were designed precisely for these areas of operation. The introduced kerosene is catalytically post-combusted in the exhaust gas system. The high-pressure windows enable the use of numerous laser-optical measurement methods. As a result, the test stand has already been used to obtain novel experimental data, which has gone on to be used in the design processes of several European engine manufacturers. In addition, data sets published by various research partners are used to validate numerical simulations.

The aim of the system is to optically investigate the fuel preparation process for gas turbine burners under realistic operating conditions and thus gain important insights into their operating behaviour and emissions.

Contact
  • Volker Speelmann
    Head of Cen­tral Ex­pen­di­ture Man­age­ment
    Ger­man Aerospace Cen­ter (DLR)
    Telephone: +49 2203 601-4103
    Fax: +49 2203 601 4115
    Linder Höhe
    51147 Cologne
    Contact
  • Ingo Otterpohl
    Ger­man Aerospace Cen­ter (DLR)
    In­sti­tute of Propul­sion Tech­nol­o­gy
    Com­bus­tor
    Telephone: +49 2203 601-3286
    Linder Höhe
    51147 Cologne
    Contact

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