SCHOOL OF CHEMICAL ENGINEERING, SUNGKYUNKWAN UNIVERSITY
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Materials Technology HOMEResearchMaterials Technology
Materials Technology
Development of new materials is a core technology that has walked together with human history and technology movement. Studies on modern technology of new materials is focusing on the extraction of synergistic properties through a fusion of individual materials, which requires a profound understanding on the chemistry as a fundamental of the material and the chemical engineering as a toolkit for the realization. Our research group is fully constructing systematic resources for materials design, synthesis, characterization and manipulation, particularly based on the specialized organic and polymeric materials, from which we are directing the development of versatile materials for biomedical, electronic and industrial applications. Furthermore, under the academic banner of °?sustainable growth°Ø for the next generation, we are currently emphasizing studies on environmentally benign and low-energy consuming materials and processing.
 
섬유공정
진단/치료용 고분자소재
염색화학
고분자 소재합성
고분자화학
유변물성
고분자재료
나노소재 및 소자
고급전기시스템
Rheology
Major Research Areas
The main research interest of our group has been focused on the analysis of rheological constitutive equations and the viscoelastic flow modeling. Based on this basic idea, we can increase productivity and solve problems in polymer processing operations. We choose the well-posed constitutive equation for flow modeling and then develop computational tool to model viscoelastic flows in polymer processing. Our main goal is to understand various unstable flow phenomena observed in real flow situation and elucidate their origins.
Development of computational algorithm for timedependent viscoelastic flows
The correct numerical description of 1D transient behavior is very important in practical and academic aspects. It suggests a good starting point for computation of transient viscoelastic flow and may be applied to solving many industrial problems. So we choose the 1D poiseuille flow as a basic problem and test the developed algorithm. Then we implement this new algorithm into 2D and 3D finite element code for viscoelastic flow simulation.


Finite element analysis of viscoelastic flows with tensor-log formulation
High Deborah or Weissenberg number problems in viscoelastic flow modeling have been know formidably difficult even in the inertialess limit. However so-called tensor-logarithmic formulation of the viscoelastic constitutive equations resolves this problem. We implement this formulation in our simulation code with developed transient algorithm and decribe high Deborah number flow phenomena with enhanced convergence and speed. Our next step is to model various unstable flow phenomena and verify their origin.

 
 
 
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