Volume 28 Issue 8
Aug.  2013
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CAO Jiao-kun, DING Shui-ting, DU Fa-rong, WANG Zhen-yu. Effects of porting arrangements on intake swirl and scavenging performance[J]. Journal of Aerospace Power, 2013, 28(8): 1711-1718.
Citation: CAO Jiao-kun, DING Shui-ting, DU Fa-rong, WANG Zhen-yu. Effects of porting arrangements on intake swirl and scavenging performance[J]. Journal of Aerospace Power, 2013, 28(8): 1711-1718.

Effects of porting arrangements on intake swirl and scavenging performance

  • Received Date: 2012-07-20
  • Publish Date: 2013-08-28
  • Effects of porting arrangements on intake swirl and scavenging performance were investigated numerically.A three-dimensional transient numerical model was established for the in-cylinder processes.Intake swirl was introduced by changing port tangential inclinations and scavenging performance was evaluated by normalized carbon dioxide mass fraction.The intake swirl intensity and scavenging performance with different porting arrangements were compared.The results show: (1) Rotation flow including swirl can be generated by port tangential inclination arrangements,and the swirl approximates to solid-body swirl approaching the top dead center.(2) Intake swirl results in short-circuiting during the scavenge processes and a concentrated carbon dioxide central core.(3) The short-circuiting can be reduced by increasing the axial inclination of inlet ports or extending the distance between inlet and exhaust ports in the flow direction.Swirl intensity can be decreased by reducing scavenge port tangential inclinations,leading to increase of short-circuiting.

     

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  • [1]
    Burkardt L A.General aviation light aircraft propulsion:from the 1940's to the next century [R].AIAA-1998-3116,1998.
    [2]
    Korres D M,Karonis D,Lois E,et al.Aviation fuel JP-5 and biodiesel on a diesel engine[J].Fuel,2008,87(1):70-78.
    [3]
    Cambone S A,Krieg K J,Pace P,et al.Unmanned aircraft systems (UAS) roadmap 2005-2030.Washington,US:Secretary of Defense,2005.
    [4]
    Rozenkranc M,Ernst J.Tactical UAV engines integration in IAI [R].AIAA 2003-6534,2003.
    [5]
    Eran S.Scavenging the two-stroke engine[J].Progress in Energy and Combustion Science,1990,16(2):95-124.
    [6]
    Heywood J B.Internal combustion engine fundamentals[M].New York:McGraw-Hill,1988.
    [7]
    Payri F,Benajes J,Margot X,et al.CFD modeling of the in-cylinder flow in direct-injection Diesel engines[J].Computers & Fluids,2004,33(8):995-1021.
    [8]
    Heywood J B,Sher E.The two-stroke cycle engine:its development,operation,and design[M].Philadelphia,US:Taylor & Francis,1999.
    [9]
    Sweeney M,Swann G,Kenny R,et al.Computational fluid dynamics applied to two-stroke engine scavenging [R].SAE Technical Paper 851519,1985.
    [10]
    Ahmadi-Befrui B,Brandstatter W,Kratochwill H.Multidimensional calculation of the flow processes in a loop-scavenged two-stroke cycle engine [R].SAE Technical Paper 890841,1989.
    [11]
    Creaven J P,Kenny R G,Fleck R,et al.A computational and experimental study of the scavenging flow in the transfer duct of a motored two-stroke cycle engine[J].Journal of Automobile Engineering,2001,215(9):1017-1031.
    [12]
    Creaven J P,Fleck R,Kenny R G,et al.Laser Doppler velocimetry measurements of flow within the cylinder of a motored two-stroke cycle engine-comparison with some computational fluid dynamics predictions[J].International Journal of Engine Research,2003,4(2):103-128.
    [13]
    Goldsborough S,Van Blarigan P.Optimizing the scavenging system for a two-stroke cycle,free piston engine for high efficiency and low emissions:a computational approach [R].SAE Technical Paper 2003-01-0001,2003.
    [14]
    Mao J,Zuo Z,Li W,et al.Multi-dimensional scavenging analysis of a free-piston linear alternator based on numerical simulation[J].Applied Energy,2011,88(4):1140-1152.
    [15]
    Shimada M.A study of stratified scavenging type in two cycle gasoline engine[J].JSAE Review,1998,19(3):277-279.
    [16]
    Payri F,Galindo J,Climent H,et al.Optimisation of the scavenging and injection processes of an air-assisted direct fuel injection 50cc 2-stroke S.I.engine by means of modelling.SAE Technical Paper 2001-01-1814,2001.
    [17]
    Rakopoulos C D,Kosmadakis G M,Dimaratos A M,et al.Investigating the effect of crevice flow on internal combustion engines using a new simple crevice model implemented in a CFD code[J].Applied Energy,2011,88(1):111-126.
    [18]
    Mohamed Ismail H,Ng H K,Gan S.Evaluation of non-premixed combustion and fuel spray models for in-cylinder Diesel engine simulation[J].Applied Energy,2012,90(1):271-279.
    [19]
    Versteeg H K,Malalasekera W.An introduction to computational fluid dynamics:the finite volume method[M].New York:Pearson Education Ltd.,2007.
    [20]
    Freen P D,Berenyi S G,Brouwers A P,et al.Lightweight two-stroke cycle aircraft Diesel engine technology enablement program.NASA-CR-174923-VOL-3,1985.
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