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ANALYSIS OF PERISTALTIC FLOW OF RABINOWITSCH FLUID IN A NON-UNIFORM CHANNEL: ANALYTICAL APPROACH 拉比诺维奇流体在非均匀通道中的蠕动流动分析:解析方法
IF 1.1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2020-02-26 DOI: 10.52292/J.LAAR.2020.213
C. Rajashekhar, G. Manjunath, Hanumesh Vaidya, K. Prasad, B. DivyaB, J. Saraswati
The present paper examines the impact of heat and mass transfer on the peristaltic flow of Rabinowitsch fluid through a non-uniform channel. The effects of slip and variable fluid properties are taken into account. The impacts of wall rigidity, wall stiffness, and viscous damping force parameter are considered. The equations governing the flow are rendered dimensionless by using a suitable similarity transformation. The governing equations of momentum, motion, energy, and concentration are solved by utilizing long wavelength and small Reynolds number approximation. The MATLAB 2019a programming has been used to obtain the solutions for velocity and concentration profiles. The series solution technique has been utilized to get the expression for temperature. The influence of relevant parameters on velocity, temperature, concentration, and streamlines are examined for viscous, shear-thinning, and shear thickening fluid models. The examination uncovers that a rise in the value of variable viscosity and variable thermal conductivity improves the velocity and temperature profiles for Newtonian and pseudoplastic fluid models. Moreover, an increase in the volume of the trapped bolus is seen for an expansion in the estimation of the velocity slip parameter for all the three considered models.
本文研究了传热传质对拉宾诺维奇流体在非均匀通道中的蠕动流动的影响。考虑了滑移和流体性质变化的影响。考虑了墙体刚度、墙体刚度和粘性阻尼力参数的影响。通过适当的相似变换,将控制流的方程变为无因次。利用长波长和小雷诺数近似求解了动量、运动、能量和浓度的控制方程。使用MATLAB 2019a编程获得了速度和浓度剖面的解。利用级数解法得到了温度的表达式。研究了黏性、剪切减薄和剪切增厚流体模型中相关参数对速度、温度、浓度和流线的影响。研究发现,变粘度和变导热系数值的增加改善了牛顿流体模型和假塑性流体模型的速度和温度分布。此外,在所有三种考虑的模型中,由于估计速度滑移参数的扩展,可以看到被困球体积的增加。
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引用次数: 2
EXACT TRAVELLING WAVE SOLUTIONS FOR THE GENERALIZED KURAMOTO-SIVASHINSKY EQUATION 广义kuramoto-sivashinsky方程的行波精确解
IF 1.1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2015-01-01 DOI: 10.18642/jmsaa_7100121422
Jian Yang, Xiaojuan Lu, Shengqiang Tang
By using transformation , 2 3 2 1 u a u a a u + + = ′ ′ the method of sine-cosine and the method of dynamical bifurcation theory of the differentiable dynamics, we study the generalized Kuramoto-Sivashinsky equation. It is shown that the generalized Kuramoto-Sivashinsky equation gives solitary wave solution, solitary patterns wave solution, and periodic wave solution. Under different parametric conditions, various sufficient conditions to guarantee the existence of the above solutions are given. All exact explicit parametric representations of the above waves are determined.
利用变换、2 3 2 1 ua ua a u + + = ' '、正弦-余弦方法和可微动力学的动力分岔理论方法,研究了广义Kuramoto-Sivashinsky方程。证明了广义Kuramoto-Sivashinsky方程给出了孤波解、孤型波解和周期波解。在不同的参数条件下,给出了保证上述解存在的各种充分条件。确定了上述波的所有精确的显式参数表示。
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引用次数: 15
Stability of systems with time-varying delay 时变时滞系统的稳定性
IF 1.1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 2006-01-01 DOI: 10.1007/978-3-642-03037-6_3
E. Slawiñski, V. Mut, J. Postigo
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引用次数: 17
Molybdenum oxide-supported ru catalysts. Characterization and evaluation in the syngas reaction 氧化钼负载ru催化剂。合成气反应的表征与评价
IF 1.1 4区 工程技术 Q4 ENGINEERING, CHEMICAL Pub Date : 1997-04-14 DOI: 10.1016/S0927-7757(97)00001-0
D. Damiani, A. Juan, C. Moro
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引用次数: 7
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Latin American Applied Research
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