Abstract
Smoothed Particle Hydrodynamics method has been developed rapidly as an alternative numerical method to solve the fluid physics problem. This meshless method is able to identify the physical entity of each fluid by interpolating the corresponding physical entity associated with the neighboring particles within the influence domain. Three-dimensional fluid flows on circular vertical pipe contraction were studied by using this method. The numerical model will be simulated by varying the number of fluid particles and the number of kernel particles within the influence domain. The conservation of mass, conservation of energy and the minor loss coefficient will be evaluated. The mass conservation and energy conservation will be reached by considering the appropriate number of initial particles and kernel particles. The results of the minor loss coefficient achieved from the numerical simulation are between 1.992 and 2.836.
Highlights
Smoothed Particle Hydrodynamics (SPH) Method used as one alternative numerical method to solve the fluid physics problem has developed rapidly
Not like the grid-based method, SPH method does not depend on the free surface, deformable boundary, and node variables that change in space and time
The research uses the conservation law of mass and the conservation law of energy to observe the stability of the results
Summary
Smoothed Particle Hydrodynamics (SPH) Method used as one alternative numerical method to solve the fluid physics problem has developed rapidly. One of the testings that use the SPH method for simulating three-dimensional flow on vertical pipe contraction has been researched before by Lydiana (2017) [1] with the rectangular vertical pipe model. The research uses the conservation law of mass and the conservation law of energy to observe the stability of the results. The simulation represents as two-dimensional water flow behavior. Our study interested to get the condition of threedimensional flow, the development is done with considering the y-axes particles changing the vertical pipe from the rectangular vertical pipe to circular vertical pipe, so it can be reached the realistic result for the real condition of three-dimensional flow
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