The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Yuanyuan Zhang - One of the best experts on this subject based on the ideXlab platform.

  • study on heat transfer of Leakage Flow in tooth tip clearance for single screw compressor based on fuzzy contourlet finite element method
    Numerical Heat Transfer Part A-applications, 2017
    Co-Authors: Bin Zhao, Lizhi Xu, Yuanyuan Zhang
    Abstract:

    ABSTRACTHeat transfer of Leakage Flow in tip clearance will reduce the working performance, and therefore it is necessary to study it in depth. To improve the computing effectiveness of heat transf...

  • study on heat transfer of Leakage Flow in tooth tip clearance for single screw compressor based on fuzzy contourlet finite element method
    Numerical Heat Transfer Part A-applications, 2017
    Co-Authors: Bin Zhao, Shuai Han, Chengjiang Shi, Diankui Gao, Yuanyuan Zhang
    Abstract:

    ABSTRACTHeat transfer of Leakage Flow in tip clearance will reduce the working performance, and therefore it is necessary to study it in depth. To improve the computing effectiveness of heat transfer of Leakage Flow in the tooth tip clearance of the single-screw compressor, the fuzzy contourlet finite element model is constructed by combining the contourlet finite element method and fuzzy finite element method. First, the related research progresses are summarized. Second, heat transfer model of Leakage Flow in the tip clearance of single-screw compressor is constructed. Third, the fuzzy contourlet wavelet finite element model is established. Finally, heat transfer simulation of Leakage Flow in the tip clearance of single-screw compressor is performed, and the variables with fuzziness are chosen, which are transformed to random variables based on information entropy theory. The comparing analysis among simulation analysis and test results is performed, and results show that the contourlet finite element m...

  • temperature field analysis of tangential clearance Leakage Flow for scroll compressor based on fuzzy ridgelet finite element method
    Numerical Heat Transfer Part B-fundamentals, 2017
    Co-Authors: Bin Zhao, Lizhi Xu, Sen Chen, Yuanyuan Zhang
    Abstract:

    ABSTRACTTo improve the computing precision and efficiency of temperature field analysis in tangential clearance of scroll compressor, the ridgelet finite element method is combined with fuzzy finite element method to construct the fuzzy ridgelet finite element method of analyzing temperature field in tangential clearance. First, the related research progresses on heat transfer of scroll compressor, wavelet finite element method, and fuzzy finite element method are summarized. Second, the Leakage Flow model of tangential clearance in scroll compressor is studied in depth. Third, the heat transfer model of Leakage Flow in tangential clearance of scroll compressor is established, and then the fuzzy ridgelet finite element model is constructed, the fuzzy finite element model is transformed to the random model based on information entropy, the corresponding calculating procedure is designed. Finally, the simulation analysis is performed based on fuzzy finite element method, fuzzy Daubechies wavelet finite elem...

Bin Zhao - One of the best experts on this subject based on the ideXlab platform.

Ajit P Yoganathan - One of the best experts on this subject based on the ideXlab platform.

  • passive Flow control of bileaflet mechanical heart valve Leakage Flow
    Journal of Biomechanics, 2008
    Co-Authors: Lakshmi Prasad Dasi, David Murphy, Ari Glezer, Ajit P Yoganathan
    Abstract:

    Blood damage and platelet activation are inherent problems with present day mechanical heart valve designs. We investigate the approach of passive Flow control applied to bileaflet mechanical heart valve (BMHV) Flows as a means of optimizing Leakage Flow hemodynamics at length scales relevant to blood damage and platelet activation. Rectangular and hemispherical vortex generator (VG) arrays were mounted on the downstream surfaces of a 25 mm St. Jude Medical valve adjacent to the b-datum leaflet edge (central line where the two leaflets touch in closed position). The effect of VGs on the Flow structure emanating from the b-datum line under both pulsatile and steady Flow conditions was measured using high resolution particle image velocimetry technique. The VGs were seen to spatially disperse and dissipate the coherent Leakage jet structure emanating from the b-datum line. This resulted in a significant diminution of turbulence stresses, particularly with the rectangular VG configuration. This study shows that passive Flow control techniques deployed on BHMVs is potentially beneficial as significant control of Flow at small length scales may be achieved without altering large scale designs of the valve.

Diankui Gao - One of the best experts on this subject based on the ideXlab platform.

  • study on heat transfer of Leakage Flow in tooth tip clearance for single screw compressor based on fuzzy contourlet finite element method
    Numerical Heat Transfer Part A-applications, 2017
    Co-Authors: Bin Zhao, Shuai Han, Chengjiang Shi, Diankui Gao, Yuanyuan Zhang
    Abstract:

    ABSTRACTHeat transfer of Leakage Flow in tip clearance will reduce the working performance, and therefore it is necessary to study it in depth. To improve the computing effectiveness of heat transfer of Leakage Flow in the tooth tip clearance of the single-screw compressor, the fuzzy contourlet finite element model is constructed by combining the contourlet finite element method and fuzzy finite element method. First, the related research progresses are summarized. Second, heat transfer model of Leakage Flow in the tip clearance of single-screw compressor is constructed. Third, the fuzzy contourlet wavelet finite element model is established. Finally, heat transfer simulation of Leakage Flow in the tip clearance of single-screw compressor is performed, and the variables with fuzziness are chosen, which are transformed to random variables based on information entropy theory. The comparing analysis among simulation analysis and test results is performed, and results show that the contourlet finite element m...

Chengjiang Shi - One of the best experts on this subject based on the ideXlab platform.

  • study on heat transfer of Leakage Flow in tooth tip clearance for single screw compressor based on fuzzy contourlet finite element method
    Numerical Heat Transfer Part A-applications, 2017
    Co-Authors: Bin Zhao, Shuai Han, Chengjiang Shi, Diankui Gao, Yuanyuan Zhang
    Abstract:

    ABSTRACTHeat transfer of Leakage Flow in tip clearance will reduce the working performance, and therefore it is necessary to study it in depth. To improve the computing effectiveness of heat transfer of Leakage Flow in the tooth tip clearance of the single-screw compressor, the fuzzy contourlet finite element model is constructed by combining the contourlet finite element method and fuzzy finite element method. First, the related research progresses are summarized. Second, heat transfer model of Leakage Flow in the tip clearance of single-screw compressor is constructed. Third, the fuzzy contourlet wavelet finite element model is established. Finally, heat transfer simulation of Leakage Flow in the tip clearance of single-screw compressor is performed, and the variables with fuzziness are chosen, which are transformed to random variables based on information entropy theory. The comparing analysis among simulation analysis and test results is performed, and results show that the contourlet finite element m...