Abstract In this paper, a one-dimensional regenerator hydrodynamic model has been developed. In the model, the definition of regenerator friction factor under oscillating flow is different from that for steady flow. A dynamic experimental apparatus has been designed and constructed to investigate the oscillating-flow characteristics of regenerators. In the prototype experimental system, a linear compressor was used to generate the oscillating pressure wave. Three different length regenerators were tested. Detailed experimental data have been obtained for the oscillating pressure and velocity wave that define the flow amplitude and the phase shift characteristics of a high frequency pulse tube cryocooler regenerator. The operational frequency of the system was run at 30 Hz, 40 Hz, 50 Hz and 60 Hz. The oscillating flow friction factor at these operational frequencies is shown in the experimental data. It was found that the relationship between the friction factor under oscillating flow and steady flow varied with the value of the instantaneous Reynolds numbers during one cycle. The ratio is not simply a scaler-multiple relationship as has been reported in other References. The results can be used to predict the performance of a pulse tube cryocooler and should be helpful in the design of a cryogenic regenerator using numerical simulation models.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Experimental Flow Characteristics Study of a High Frequency Pulse Tube Regenerator


    Contributors:
    Wang, X. L. (author) / Zhao, M. G. (author) / Cai, J. H. (author) / Liang, J. T. (author) / Dai, W. (author)

    Published in:

    Publication date :

    2005-01-01


    Size :

    6 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Experimental Flow Characteristics Study of a High Frequency Pulse Tube Regenerator

    Wang, X. / Zhao, M. / Cai, H. et al. | British Library Conference Proceedings | 2005


    Flow tube wall regenerator performance

    DECHER, REINER | AIAA | 1990


    New Regenerator Materials for Use in Pulse Tube Coolers

    Kashani, A. / Helvensteijn, B. P. M. / Kittel, P. et al. | British Library Conference Proceedings | 2001


    New Regenerator Materials for Use in Pulse Tube Coolers

    Kashani, A. / Helvensteijn, B. P. M. / Kittel, P. et al. | Springer Verlag | 2002