Convective flow of a fractional second grade fluid containing different nanoparticles with Prabhakar fractional derivative subject to non‐uniform velocity at the boundary

2021 ◽  
Author(s):  
Abdul Basit ◽  
Muhammad Imran Asjad ◽  
Ali Akgül
Keyword(s):  
Fractional Derivative ◽  
Convective Flow ◽  
Second Grade ◽  
Second Grade Fluid ◽  
Uniform Velocity ◽  
Grade Fluid

Advanced Implicit Meshless Approaches for the Rayleigh–Stokes Problem for a Heated Generalized Second Grade Fluid with Fractional Derivative

2018 ◽  
Vol 15 (05) ◽  
pp. 1850032 ◽  
Author(s):  
Xiaolei Bi ◽  
Shanjun Mu ◽  
Qingxia Liu ◽  
Quanzhen Liu ◽  
Baoquan Liu ◽  
...  
Keyword(s):  
Fractional Derivative ◽  
Bounded Domain ◽  
Stokes Problem ◽  
Second Order ◽  
Second Grade ◽  
Second Grade Fluid ◽  
Discrete Scheme ◽  
First Order ◽  
Grade Fluid ◽  
Generalized Second Grade Fluid

To solve the Rayleigh–Stokes problem for a heated generalized second grade fluid with fractional derivative in a bounded domain is important in the research for diffusion processes. In this paper, novel implicit meshless approaches based on the moving least squares (MLS) approximation for spatial discretization and two different time discrete schemes, which are the first-order semi-discrete scheme and the second-order semi-discrete scheme for time, are developed for the numerical simulation of the Rayleigh–Stokes problem for a heated generalized second grade fluid with fractional derivative in a bounded domain. Based on these two time discretization schemes, the newly developed meshless approaches will have the first-order and the second-order accuracy in time, respectively. The stability and convergence of the implicit MLS meshless approaches are discussed and theoretically proven. Numerical examples with different problem domains and different nodal distributions are studied to validate and investigate accuracy and efficiency of the newly developed meshless approaches. It has found that the newly developed meshless approaches are accurate and convergent for fractional partial differential equations (FPDEs). Most importantly, the meshless approaches are robust for arbitrarily distributed nodes and complex domains.

scholarly journals On well-posedness of semilinear Rayleigh-Stokes problem with fractional derivative on ℝ N

2021 ◽  
Vol 11 (1) ◽  
pp. 580-597
Author(s):  
Jia Wei He ◽  
Yong Zhou ◽  
Li Peng ◽  
Bashir Ahmad
Keyword(s):  
Fractional Derivative ◽  
Blow Up ◽  
Stokes Problem ◽  
Second Grade ◽  
Laplacian Operator ◽  
Well Posedness ◽  
Second Grade Fluid ◽  
Liouville Fractional Derivative ◽  
Grade Fluid ◽  
Generalized Second Grade Fluid

Abstract We are devoted to the study of a semilinear time fractional Rayleigh-Stokes problem on ℝ N , which is derived from a non-Newtonain fluid for a generalized second grade fluid with Riemann-Liouville fractional derivative. We show that a solution operator involving the Laplacian operator is very effective to discuss the proposed problem. In this paper, we are concerned with the global/local well-posedness of the problem, the approaches rely on the Gagliardo-Nirenberg inequalities, operator theory, standard fixed point technique and harmonic analysis methods. We also present several results on the continuation, a blow-up alternative with a blow-up rate and the integrability in Lebesgue spaces.

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