Interpolation Techniques in Computational Particle Tracking inside a Direct-Injection Diesel Engine Cylinder

Lok Bee Seng; Muhammad Ahmar Zuber; Wan Mohd Faizal Wan Mahmood; Zulkhairi Zainol Abidin; Zambri Harun

doi:10.4028/www.scientific.net/AMM.663.381

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 663Interpolation Techniques in Computational Particle...

Interpolation Techniques in Computational Particle Tracking inside a Direct-Injection Diesel Engine Cylinder

Abstract:

Radial Basis Function (RBF) interpolation and trilinear interpolation techniques are compared in the soot particle tracking inside the cylinder of a direct injection engine. The interpolation techniques are used separately in an efficient routine written in Matlab codes which is developed to track the movement or pathline of soot particles in the engine operation cycle ranged from inlet valve closing (IVC) to exhaust valve opening (EVO). Soot particles are treated as a massless body and in spherical shape which will move under the influence of bulk gases flow inside the cylinder. Movement of soot particles are examined through the selection factors of particle's initial coordinate (r,Ɵ,z) and soot concentration level at different instant crack angle. Results obtained from both interpolation techniques are compared and good agreement is achieved with some minor relative difference. However, RBF interpolation has wider applications potential where it can be applied to variety type of mesh geometry as compared to trilinear interpolation which is best used in mesh with hexahedral shape.

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Periodical:

Applied Mechanics and Materials (Volume 663)

Pages:

381-386

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.663.381

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Online since:

October 2014

Authors:

Lok Bee Seng*, Muhammad Ahmar Zuber, Wan Mohd Faizal Wan Mahmood, Zulkhairi Zainol Abidin, Zambri Harun

Keywords:

Interpolation, Particle Tracking, Radial Basis Function, Soot, Trilinear

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