A Mesh Free Moving Node Method To Analyze Flow Through Spirals of Orbiting Scroll Pump
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A Mesh Free Moving Node Method To Analyze Flow Through Spirals of Orbiting Scroll Pump

Authors: I.Banerjee, A.K.Mahendra, T.K.Bera, B.G.Chandresh

Abstract:

The scroll pump belongs to the category of positive displacement pump can be used for continuous pumping of gases at low pressure apart from general vacuum application. The shape of volume occupied by the gas moves and deforms continuously as the spiral orbits. To capture flow features in such domain where mesh deformation varies with time in a complicated manner, mesh less solver was found to be very useful. Least Squares Kinetic Upwind Method (LSKUM) is a kinetic theory based mesh free Euler solver working on arbitrary distribution of points. Here upwind is enforced in molecular level based on kinetic flux vector splitting scheme (KFVS). In the present study we extended the LSKUM to moving node viscous flow application. This new code LSKUM-NS-MN for moving node viscous flow is validated for standard airfoil pitching test case. Simulation performed for flow through scroll pump using LSKUM-NS-MN code agrees well with the experimental pumping speed data.

Keywords: Least Squares, Moving node, Pitching, Spirals.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1079076

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[1] AGARD-R-702."Compendium of unsteady aerodynamic measurements." August 1982
[2] Batina JT. "Unsteady airfoil solutions using unstructured dynamic meshes" AIAA Journal, Vol 28, PP 1381-1388 (1990)
[3] Cui. M. M. "Numerical Study of Unsteady Flows in a Scroll Compressor" International Journal of Fluids Engineering, Vol. 128 / (947-955), September (2006)
[4] Ghosh A.K., Deshpande S.M., "A robust least square kinetic upwind scheme for Euler equation" Int. Conference on Numerical Method (ICNMFD-14) (1994)
[5] I.Banerjee, "CFD simulation of flow through single and multi vane spiral pump using moving node LSKUM-NS" M.Sc. thesis, HBNI, Mumbai, (2012)
[6] Kim Tiow Ooi, Jiang Zhu, "Convective heat transfer in a scroll compressor chamber: a 2-D simulation", International Journal of Thermal Sciences 43, 677- 688, (2004)
[7] Luo Hong, Joseph D Baum, Lo ¨ hner Rainald. "An accurate, fast, matrix-free implicit method for computing unsteady flows on unstructured grids." Comput Fluids;30:137-59, (2001)
[8] Mahendra A.K., "application of least squares kinetic upwind method to strongly rotating viscous flow" , M.Sc. thesis, IISC, Bangalore, (2003)
[9] Mahendra A.K, R.K.Singh, G.Gouthaman, "Meshless Kinetic Upwind method for compressible, viscous rotating flows", computers and fluids (2011).
[10] Mandal J.C., Deshpande S.M, "Kinetic flux vector splitting for Euler equations", computers and fluids 23(2), 447-478(1994)
[11] Ramesh V, Deshpande SM. Least squares kinetic upwind method on moving grids for unsteady Euler computations. Comput Fluids J;30(5):621-41, (2001)
[12] Ramesh V, Deshpande SM. "Unsteady flow computations for flow past multiple moving boundaries using LSKUM" Comput Fluids J 36,1592- 1608, (2007)