The effect of interface gradient distribution on unrealistic flow in 3D droplet simulations

Name: The effect of interface gradient distribution on unrealistic flow in 3D droplet simulations
Author: Yılmaz, Anıl, Kayansalçik, Gökhan, Ertunç, Özgür

İsim	The effect of interface gradient distribution on unrealistic flow in 3D droplet simulations
Yazar	Yılmaz, Anıl, Kayansalçik, Gökhan, Ertunç, Özgür
Basım Tarihi:	2021-08-31
Basım Yeri	- Europe, Institute for Liquid Atomization and Spray Systems, ILASS
Konu	Drop dynamics, Gradient calculations, Multiphase flow, Parasitic current, VOF
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2-s2.0-85180802338
Kayıt Numarası	aa2e40f1-af1a-4c8c-bc23-6b476477448d
Lokasyon	Mechanical Engineering
Tarih	2021-08-31
Notlar	TÜBİTAK
Örnek Metin	The purpose of this study is to investigate the origin of the parasitic current to provide accurate prediction of droplet surface interactions in Volume of Fluid (VOF) framework. The deformation of the droplet due to parasitic current has been the most important problem in 3D simulations. Parasitic current is influenced by curvature and surface normal estimation in the Continuum Surface Force (CSF) model. It has been shown that the number of neighboring cells of the central cell influences the gradient calculations regarding the generation of parasitic current. It has been observed that the polyhedral cell structure delivers a smoother interface gradient distribution than the cartesian cell structure. To examine the dynamics in different physical conditions, we compared simulations with base experiments to understand whether those models work. We then simulated droplet cases on stationary and moving wall conditions, and simulation results were consistent with experimental results.

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The effect of interface gradient distribution on unrealistic flow in 3D droplet simulations

Yazar Yılmaz, Anıl, Kayansalçik, Gökhan, Ertunç, Özgür

Basım Tarihi 2021-08-31

Basım Yeri - Europe, Institute for Liquid Atomization and Spray Systems, ILASS

Konu Drop dynamics, Gradient calculations, Multiphase flow, Parasitic current, VOF

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2-s2.0-85180802338

Kayıt Numarası aa2e40f1-af1a-4c8c-bc23-6b476477448d

Lokasyon Mechanical Engineering

Tarih 2021-08-31

Notlar TÜBİTAK

Örnek Metin The purpose of this study is to investigate the origin of the parasitic current to provide accurate prediction of droplet surface interactions in Volume of Fluid (VOF) framework. The deformation of the droplet due to parasitic current has been the most important problem in 3D simulations. Parasitic current is influenced by curvature and surface normal estimation in the Continuum Surface Force (CSF) model. It has been shown that the number of neighboring cells of the central cell influences the gradient calculations regarding the generation of parasitic current. It has been observed that the polyhedral cell structure delivers a smoother interface gradient distribution than the cartesian cell structure. To examine the dynamics in different physical conditions, we compared simulations with base experiments to understand whether those models work. We then simulated droplet cases on stationary and moving wall conditions, and simulation results were consistent with experimental results.