International Journal of Mechanical Engineering and Applications

Volume 2, Issue 5, October 2014

  • Numerical Study on Flow Length in Injection Molding Process with High-Speed Injection Molding

    Pham Son Minh, Tran Minh The Uyen

    Issue: Volume 2, Issue 5, October 2014
    Pages: 58-63
    Received: Oct. 01, 2014
    Accepted: Oct. 16, 2014
    Published: Oct. 30, 2014
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    Abstract: In thin-wall injection molding, due to the very fast polymer melt heat transfer to the mold wall, the freeze layer appears quickly during the filling stage. In this study, high-speed injection molding (up to 1400 mm/s injection speed) was studied. A mold of spiral shape, 0.4 mm thick, is used to verify the ability of melt filling under different in... Show More
  • Heat Release Rate in a Reduced-Scale Model of a Subway Car on Fire

    Won-Hee Park

    Issue: Volume 2, Issue 5, October 2014
    Pages: 64-69
    Received: Jul. 30, 2014
    Accepted: Oct. 28, 2014
    Published: Oct. 30, 2014
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    Abstract: The heat release rate of a subway car on fire is measured for various positions of an ignition source and simulated materials differing in combustibility by using a reduced-scale model. Although the maximum HRR value is nearly independent of the position of the ignition source, the time required to reach this value varies greatly for different igni... Show More
  • Experimental Study by Visualisation of Behavioural Properties of Vortex Structures on the Upper Surface of an Ogive of Revolution ß 52°

    Abderrahmane Abene

    Issue: Volume 2, Issue 5, October 2014
    Pages: 70-77
    Received: Oct. 20, 2014
    Accepted: Nov. 03, 2014
    Published: Nov. 10, 2014
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    Abstract: A large number of studies of flow visualisations, developed on the upper surface of delta or gothic wings and on that of ogives of revolution, have been carried out in the wind tunnel of the Valenciennes University aerodynamics and hydrodynamics laboratory (LAH). These studies have provided a better understanding of the development and the position... Show More