The dynamic behaviours of a filament in viscoelastic uniform flow were investigated by an immersed boundary-lattice Boltzmann method. effects the Reynolds numbers (Re, ranging from 10 to 200) and Weissenberg number (Wi, 0 1.2) on flapping motion drag lift coefficients studied. It was found that higher inertial effect (larger Re) promotes filament. In addition, major viscoelasticity Giesekus flu...

Okul öncesi fen eğitiminde temalı bilgi veren resimli çocuk kitapları, bilimsel bilgilerin kazandırılmasında ve süreç becerilerinin geliştirilmesinde oldukça önemlidir. Ulusal uluslararası alan yazında yapılmış olan araştırmalar okul öğretmenlerinin fene karşı ön yargılı düşük öz-yeterlik inancına sahip olduklarını, kavram bilgilerinin yeterli düzeyde olmadığını göstermektedir. Bu noktada dönem...

One of the newest of viscoelastic RANS turbulence models for drag reducing channel flow with polymer additives is studied in different flow and rheological properties. In this model, finitely extensible nonlinear elastic-Peterlin (FENE-P) constitutive model is used to describe the viscoelastic effect of polymer solution and turbulence model is developed in the k-ϵ-(ν^2 ) ̅-f framework. The geome...

Owing to nonlinear viscoelasticity, materials often show characteristic features that resemble those of thixotropy. This issue has been debated in the literature over past several decades, and experimental protocols have proposed distinguish thixotropy from viscoelasticity. In this work, we assess these by carrying out experiments using polymer solutions, thixotropic clay dispersions, modeling ...