In this work we propose a novel generalised form of the Phan–Thien and Tanner (PTT) model by considering a new functional form of the nonlinear expression characterizing the destruction of physical network junctions and entanglements. This new function of the trace of the stress tensor is given...
The fiber spinning of polyester is analyzed with an algorithm using the Phan Thien-Tanner model. The discrete relaxation spectrum, necessary for the multimode model, is determined with the storage and loss moduli. Experimental values of the moduli are extrapolated with the help of the Cox-Merz ...
软件名称Phan-Thien Tanner模型参数计算软件 软件简称PTT模型计算版本号V1.0 登记号2023SR1090255分类号- 著作权人中国船舶集团有限公司第七一三研究所首次发表日期- 登记日期2023-09-18 该公司其他软件著作权 序号登记日期软件全称软件简称登记号版本号 12025-01-22大型仓储系统库内物资存取控制软件存取控制软件2025SR014...
Numerical study of Phan-Thien–Tanner viscoelastic fluid flow around a two-dimensional circular cylinder at a low Reynolds number: a new classification for drag variations regimesNumerical study of Phan-Thien–Tanner viscoelastic fluid flow around a two-dimensional circular cylinder at a low Reynolds ...
The uid behaviour is described by the recently proposed viscoelastic model, known as the generalised simplied Phan-Thien-Tanner constitutive equation, that considers the Mittag-Leer function instead of the classical linear and exponential functions of the trace of the stress tensor, and provides one ...
Phan–Thien–Tanner (gPTT) constitutive equation) in a microchannel under asymmetric zeta potential conditions. The constitutive equation incorporates the Mittag–Leffler function with two parameters (αandβ), which regulate the rate of destruction of junctions in a network model. We analyze the ...
由于非牛顿流体复杂的物理结构,需要一个本构关系来描述其流变行为。在现有的各种流变模型中,许多研究人员使用简化的Phan - Thien - Tanner模型( sPTT ),因为它的预测是真实的。尽管纯电渗流有一些优点,但它遇到了焦耳热,降低了流速。因此,有时会在电渗流中加入压力驱动泵浦,以降低焦耳热效应。
In this paper, we consider an initial-value problem for the three-dimensional incompressible Phan-Thien-Tanner (PTT) model. This model is regard to the dynamic mechanical properties of polymeric fluids. We shall mainly investigate two different cases, one is without damping on the stress tensor ...
The non-Newtonian nature of blood in small arteries is analyzed mathematically by considering the blood as Phan-Thienu2013Tanner fluid. The representation for the blood flow is through an axially non-symmetrical but radially symmetric stenosis. Symmetry of the distribution of the wall shearing stress...
Phan‐Thien‐Tanner modelrheological effectsA mathematical model of blade coating is developed to study the rheological and viscoelastic effects of a Simplified Phan㏕hien㏕anner fluid passing through the narrow gap between the blade and moving substrate. First, a dimensionless analysis is conducted on...