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Numerical investigation of the effect of sprue base design on the flow pattern of aluminum gravity casting

Baghani, A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/DDF.344.43
  3. Publisher: 2013
  4. Abstract:
  5. Effects of sprue base size and design on flow pattern during aluminum gravity casting have been investigated by employing different sprue base sizes and using computational fluid dynamics (CFD). Calculations was carried out using SUTCAST simulation software based on solving Navier-Stokes equation and tracing the free surface using SOLA-VOF algorithm. Flow pattern was analyzed with focusing on streamlines and velocity distribution in sprue base, runner and in-gate. Increasing well size was produced a vortex flow at the bottom of sprue base which increased the surface velocity of liquid metal in runner. Using a rather big sprue well could eliminate vena contracta, but in-gate velocity was observed independent from well size. It assumes that in-gate velocity may be more influenced by other casting considerations. Using a curved sprue base could remove vortex flow at the bottom of sprue while keeping a nearly full contact between liquid metal and runner wall
  6. Keywords:
  7. Sprue base design ; Aluminum gravity castings ; Base design ; Gravity casting ; In-gate velocities ; Numerical investigations ; Simulation software ; Surface velocity ; Vena contracta ; Aluminum ; Computational fluid dynamics ; Computer software ; Design ; Lanthanum compounds ; Liquid metals ; Navier Stokes equations ; Velocity distribution ; Vortex flow ; Flow patterns
  8. Source: Defect and Diffusion Forum ; Volume 344 , October , 2013 , Pages 43-53 ; 10120386 (ISSN) ; 9783037859049 (ISBN)
  9. URL: http://www.scientific.net/DDF.344.43