Special Issue "Computational Fluid Dynamics"

A special issue of Mathematics (ISSN 2227-7390).

Deadline for manuscript submissions: 30 September 2019

Special Issue Editor

Guest Editor
Assc. Prof. Mostafa Safdari Shadloo

CORIA-UMR 6614—Normandie University, CNRS University and INSA of Rouen, 76000 Rouen, France
Website 1 | Website 2 | E-Mail
Phone: +33 (0)2 32 95 97 76
Interests: computationam fluid dynamics (CFD); high performance computing (HPC); multi-phase flows; transitional flow; turbulent flow

Special Issue Information

Dear Colleagues,

Hitherto, experimental approaches have been widely considered as the main source of information for predicting the physical behavior of fluid flow problems. However, in many applications, due to the complexities in fluid behavior regarding to its nonlinearity, multiscale status, multiphase, etc., experimental means have become either extremely expensive, subjected to scaling issues or, in some cases, impossible. Under these constraints, the only alternative method of scrutinizing this physical phenomenon seems to be through numerical tools.

This Special Issue focuses on computational fluid dynamics (CFD) research, with an emphasis on its recent advancements and its use in many industrial/academic applications. Papers ranging from new physical modeling and discoveries to the correct treatment of difficulties inherent in numerical modeling of fluid flow systems are invited for submission. These include but are not limited to: (i) Correct and effective models of the physical boundary conditions; (ii) mass and energy conservations; (iii) realistically treating the complicated physical phenomena; (iv) extendibility to dealing with more multiphysics phenomena, such as those in magnetohydrodynamics (MHD), electrohydrodynamics (EHD), non-Newtonian flows, phase change, nanofluidic, etc. problems; and finally, (v) the extension of aforementioned methodologies to three-dimensional modeling and massively parallel computing in order to handle the real-life problems.

We concisely invite manuscripts that focus on the use of conventional numerical methods, such as finite difference (FDM), finite volume (FVM), and finite element (FEM), to elaborate on their differences, similarities, advantages, and drawbacks. As such, the development and validation of less established and newly attracting numerical methodologies, such as smoothed particle hydrodynamics (SPH), moving particle semi-implicit (MPS), Lattice Boltzmann (LBM) methods, etc. are also in the core scope of this research topic. Manuscripts dealing with the benchmarking of new test cases, optimizing flow, fluid, geometrical parameters, as well as using data-driven approaches, such as reduced order methods and machine learning (ML), are of great interest. This Special Issue also welcomes related novel inter-/multidisciplinary works in the emerging area of mechanical, chemical, process, and energy engineering.

Prof. Mostafa Safdari Shadloo
Guest Editor

Manuscript Submission Information

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Published Papers (2 papers)

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Research

Open AccessArticle
Optimal Design of Isothermal Sloshing Vessels by Entropy Generation Minimization Method
Mathematics 2019, 7(5), 380; https://doi.org/10.3390/math7050380
Received: 20 March 2019 / Revised: 6 April 2019 / Accepted: 22 April 2019 / Published: 26 April 2019
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Abstract
In this manuscript, the optimal design of geometry for a forced sloshing in a rigid container based on the entropy generation minimization (EGM) method is presented. The geometry of the vessel considered here is two dimensional rectangular. Incompressible inviscid fluid undergoes horizontal harmonic [...] Read more.
In this manuscript, the optimal design of geometry for a forced sloshing in a rigid container based on the entropy generation minimization (EGM) method is presented. The geometry of the vessel considered here is two dimensional rectangular. Incompressible inviscid fluid undergoes horizontal harmonic motion by interaction with a rigid tank. The analytical solution of a fluid stream function is obtained and benchmarked by Finite element results. A parameter study of the aspect ratio, amplitude, and frequency of the horizontal harmonic motion is performed. As well, an analytical solution for the total entropy generation in the volume is presented and discussed. The total entropy generation is compared with the results of the Reynolds-Averaged Navier–Stokes (RANS) solver and the Volume-of-Fluid (VOF) method). Then, the effect of parameters is studied on the total entropy generated by sway motion. Finally, the results show that, based on the excitation frequency, an optimal design of the tank could be found. Full article
(This article belongs to the Special Issue Computational Fluid Dynamics)
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Open AccessArticle
MHD Flow of Nanofluid with Homogeneous-Heterogeneous Reactions in a Porous Medium under the Influence of Second-Order Velocity Slip
Mathematics 2019, 7(3), 220; https://doi.org/10.3390/math7030220
Received: 25 January 2019 / Revised: 21 February 2019 / Accepted: 21 February 2019 / Published: 26 February 2019
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Abstract
The influence of second-order velocity slip on the MHD flow of nanofluid in a porous medium under the effects of homogeneous-heterogeneous reactions has been analyzed. The governing flow equation is exactly solved and compared with those in the literature for the skin friction [...] Read more.
The influence of second-order velocity slip on the MHD flow of nanofluid in a porous medium under the effects of homogeneous-heterogeneous reactions has been analyzed. The governing flow equation is exactly solved and compared with those in the literature for the skin friction coefficient in the absence of the second slip, where great differences have been observed. In addition, the effects of the permanent parameters on the skin friction coefficient, the velocity, and the concentration have been discussed in the presence of the second slip. As an important result, the behavior of the skin friction coefficient at various values of the porosity and volume fraction is changed from increasing (in the absence of the second slip) to decreasing (in the presence of the second slip), which confirms the importance of the second slip in modeling the boundary layer flow of nanofluids. In addition, five kinds of nanofluids have been investigated for the velocity profiles and it is found that the Ag-water nanofluid is the lowest. For only the heterogeneous reaction, the concentration equation has been exactly solved, while the numerical solution is applied in the general case. Accordingly, a reduction in the concentration occurs with the strengthening of the heterogenous reaction and also with the increase in the Schmidt parameter. Moreover, the Ag-water nanofluid is of lower concentration than the Cu-water nanofluid. This is also true for the general case, when both of the homogenous and heterogenous reactions take place. Full article
(This article belongs to the Special Issue Computational Fluid Dynamics)
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