Unanticipated high heat flux amplification in thermal management schemes can compromise or limit the optimization in emerging engineering systems. A conjugate heat flux removal finite element analysis simulation was developed with excellent accuracy for predicting heat flux amplification and the peak inside wall temperature ( T w i max ) in single-side heated flow channels. The simulation was expanded in this work by developing a conceptual model that identifies some of the parameters controlling the amplification. Although the model appears to be fluid- and flow regime-independent, more work is required. The model was used to develop amplification and T w i max correlation comparisons for a single-side heated monoblock with a circular flow channel. At a 1.5 MW / m 2 incident absorbed heat flux, the model predictions had excellent agreement with the simulation and prototype predictions. At this heat flux, for example, the model amplification prediction was 1.20; i.e., the inside flow channel maximum heat flux was 20% higher than the incident heat flux. The corresponding amplifications for the simulation and prototype were 1.22 and 1.20, respectively. Finally, the model was developed to be applicable in the r i - ϕ 0 region and had very good inside wall radial heat flux and temperature circumferential distribution predictions.


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    Title :

    Thermal Management High Heat Flux Amplification Conceptual Model


    Contributors:

    Published in:

    Publication date :

    2013-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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