Cabin aerodynamics

Department Fluid Systems

The passenger's thermal comfort is an essential design-criterion for the air-conditioning and customization of an aircraft cabin. The state of the art in industry is to conduct costly and time-consuming test series with specifically built cabin mock-ups to obtain some information about the expected passenger's sensation of comfort already in the design process. In the future it is envisaged to predict the passenger's comfort by means of numerical simulations and to allow for an interactive layout of an optimized aircraft cabin. The CFD-computations of the air flow in the cabin's interior currently performed in the department concentrate on three configurations, the A380 mock-up, the Do728 cabin and the A320-cabin of DLR research passenger plane ATRA. Additionally, the flow through cabin air outlets is optimized with the help flow simulations to achieve design specifications. CFD-studies of the flow through generic air outlets are also performed to develop simple flow rectifiers that can be pasted into the diffuser of the air outlet.

 

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Fig. 1: Visualization of the computed distribution of the averaged in-plane velocity magnitude and respective velocity vectors in a cross section of the A380 cabin mock-up.

 

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Fig. 2: Computed flow through a generic cabin air outlet. The colored pressure distribution is visualized within the outlet while the velocity magnitude is presented in the meridian plane outside the outlet.

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Contact
Dr.rer.nat. Johannes Bosbach
German Aerospace Center

Institute of Aerodynamics and Flow Technology
, Fluid Systems
Tel: +49 551 709-2455

Fax: +49 551 709-2241

E-Mail: Johannes.Bosbach@dlr.de
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Department Fluid Systems (AS-FLY) (http://www.dlr.de/as/en/desktopdefault.aspx/tabid-4702/7791_read-12145/usetemplate-print/)