کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
520873 867739 2011 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flows with suspended and floating particles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Flows with suspended and floating particles
چکیده انگلیسی

The evolution of the configuration of a set of particles dispersed in a flowing liquid is crucial in many applications such as sedimentation, slurry transport, rheology and structured arrays of micro- and nano-particles. Direct simulation based on what is called fictitious domain method coupled with finite element method has been used to study particulate flows and sedimentation process. Here we extend the previously proposed formulations to naturally include buoyancy force and the capillary driven attraction or repulsion of particles located at fluid interfaces. The set of differential equations is discretized using a fully implicit-fully coupled fictitious domain/finite element approach, avoiding numerical instabilities that may arise from explicit integration. The proposed formulation and implementation are validated by comparing the predictions of simple 2D flows to available numerical or analytical solutions. The method is then used to analyze the flotation of 2D particles and capillary driven aggregation at fluid interfaces.


► Flows with suspended particles floating on an interface between immiscible fluids.
► Modeling of capillary forces leading to cluster formation.
► Fully implicit-fully coupled finite element formulation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 230, Issue 20, 20 August 2011, Pages 7736–7754
نویسندگان
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