Conjugate heat and fluid analysis of SDP unit
Mathematical model of SDP unit |
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Temperature distribution plenum chamber wall |
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FE model for thermal analysis of cassette |
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Temperature distribution in cassette |
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Objective:
A ‘Surveillance Data Processor’ processes radar and surveillance data. It performs tracking and alert processing for aircraft violating separation minima with other aircraft or restricted airspace. The SDP typically has many heavily componentized cassettes in series and in close proximity to each other. When in operation the device generates copious amounts of heat, therefore, making it essential that the instrument cool itself satisfactorily to avoid burnout. A fluid-heat analysis was to be conducted to make the instrument airworthy.
Methodology:
A Conjugate Heat and Fluid Analysis was to be conducted on the SDP unit to check the air flow pattern and temperature distribution within the unit. It was modeled with 3D hexahedral elements by an iterative process for several modifications in the flow domain to optimize the flow pattern and temperature distribution. Flow of air was considered was incompressible and steady.
The instrument was later declared airworthy.
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Case Studies