检索结果-南通市图书馆

Magnetic impact on heat and mass transfer utilizing nonofluid in an annulus between a superellipse obstacle and a cavity with periodic side-wall temperature and concentration

引用

Communications in Theoretical Physics 2021年第11期73卷 1-17页

作者： Abdelraheem M Aly Noura Alsedais Department of Mathematics King Khalid UniversityAbha 62529Saudi Arabia Department of Mathematics Faculty of ScienceSouth Valley UniversityQena 83523Egypt Department of Mathematical Sciences College of SciencePrincess Nourah Bint Abdulrahman UniversityRiyadhSaudi Arabia

The magnetic impacts upon the transport of heat and mass of an electrically conducting nanofluid within an annulus among an inner rhombus with convex and outer cavity with periodic temperature/concentration profiles on its left wall are assessed by the ISPH *** right wall has Tcand C,cflat walls are adiabatic,and the temperature and concentration of the left wall are altered sinusoidally with *** features of the heat and mass transfer and fluid flow through an annulus are assessed across a wide scale of Hartmann number Ha,soret number Sr,oscillation amplitude A,Dufour number Du,nanoparticles parameterΦ,oscillation frequency f,Rayleigh number Ra,and radius of a superellipse a at Lewis number Le=20,magnetic field’s angle g=45°,Prandtl number Pr=6.2,a superellipse coefficient n=3/2,and buoyancy parameter N=*** results reveal that the velocity’s maximum reduces by 70.93%as Ha boosts from 0 to 50,and by 66.24%as coefficient a boosts from 0.1 to *** the velocity’s maximum augments by 83.04%as Sr increases from 0.6 to 2 plus a decrease in Du from 1 *** oscillation amplitude A,and frequency f are significantly affecting the nanofluid speed,and heat and mass transfer inside an *** the parameters A and f is augmenting the values of mean Nusselt number-(Sh)and mean Sherwood number^-(Nu).Increasing the radius of a superellipse a enhances the values of^(Nu)and^(Sh).

关键词： Dufour number ISPH method nanofluid soret number rhombus magnetic field

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Novel Stochastic Framework for the MHD Generator in Ocean

引用

Computers, Materials & Continua 2022年第11期73卷 3383-3402页

作者： Sakda Noinang Zulqurnain Sabir Shumaila Javeed Muhammad Asif Zahoor Raja Dostdar Ali Wajaree Weera Thongchai Botmart Department of Mathematics Statistics and Computer Faculty of ScienceUbon Ratchathani UniversityUbon Ratchathani 34190Thailand Department of Mathematics and Statistics Hazara UniversityMansehraPakistan Department of Mathematics Comsats University Islamabad45550 Islamabad CampusIslamabadPakistan Future Technology Research Center National Yunlin University of Science and TechnologyYunlin 64002Taiwan Department of Mathematics Faculty of ScienceKhon Kaen UniversityKhon Kaen 40002Thailand

This work aims to study the nonlinear ordinary differential equations(ODEs)system of magnetohydrodynamic(MHD)past over an inclined plate using Levenberg-Marquardt backpropagation neural networks(LMBNNs).The stochastic procedures LMBNNs are provided with three categories of sample statistics,testing,training,and *** nonlinear MHD system past over an inclined plate is divided into three profiles,dimensionless momentum,species(salinity),and energy(heat)*** data is applied 15%,10%,and 75%for validation,testing,and training to solve the nonlinear system of MHD past over an inclined plate.A reference data set is designed to compare the obtained and proposed solutions for the MHD *** plots of the absolute error(AE)are provided to check the accuracy and precision of the considered nonlinear system of *** obtained numerical solutions of the nonlinear magnetohydrodynamic system have been considered to reduce the mean square error(MSE).For the capability,dependability,and aptitude of the stochastic LMBNNs procedure,the numerical performances are provided to authenticate the relative arrangements of MSE,error histograms(EHs),state transitions(STs),correlation,and regression.

关键词： MHD energy salinity levenberg-marquardt backpropagation soret number nonlinear

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Flow characteristics in a parallel-plate porous channel under convective boundary conditions and triple diffusion for the non-Darcy porous matrix

引用

Propulsion and Power Research 2021年第4期10卷 396-411页

作者： J.C.Umavathi Department of Mathematics Gulbarga UniversityGulbarga585106KarnatakaIndia

This article inspects the effect of triple diffusion in a vertical conduit encapsulated with porous matrix and subjected to third kind boundary *** kind boundary condition is a combination of Dirichlet and Neumann boundary conditions which specifies a linear combination of function and its derivative values on the *** chemical reaction along with viscous and Darcy dissipation effects are *** the Boussinesq approximation,the soultal buoyancy effects due to concentration gradients of the dispersed components are taken into *** suitable transformations,the conservation equations are reduced into dimensionless form and the dimensionless parameters evolved are thermal Grashof number (0≤Λ_(1)≤20),solutal Grashof number(for species 1 and 2,0≤Λ_(2);Λ_(3)≤20),porous (2≤σ≤8) and inertial parameters (0≤Ι≤6),Biot numbers(at the left and right walls,1≤Bi_(1);Bi_(2)≤10),Brinkman number (0≤Br≤1),Schmidt numbers (0≤Sc_(1);Sc_(2)≤6),soret numbers (Sr_(1) =Sr_(2) =1) and temperature difference ratio (R_(T) = 1).Adopting perturbation technique,the analytical solutions which are applicable only when the Brinkman number is less than one is *** for any values of the Brinkman number,Runge-Kutta shooting method is *** impact of selected parameters on the momentum,heat and dual species concentration fields are presented in the form of *** solutions computed by numerical method are justified by comparing with the analytical *** numerical and analytical solutions are equal in the absence of Darcy and viscous dissipations and the discrepancy advances as the Brinkman number *** the solutions obtained are also justified by comparing the results with Zanchini[1]in the absence of chemical reaction for clear *** thermal field is augmented with the Brinkman number for symmetric and asymmetric Biot *** the profiles are highly distinct at the cold plate for unequal Biot numbers

关键词： Mixed convection Robin boundary conditions Darcy-Forchheimer-Brinkman model soret number Runge-Kutta shooting method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Investigations of soret,Joule and Hall effects on MHD rotating mixed convective flow past an infinite vertical porous plate

引用

Journal of Ocean Engineering and Science 2019年第3期4卷 263-275页

作者： M.Veera Krishna B.V.Swarnalathamma Ali J.Chamkha Department of Mathematics Rayalaseema UniversityKurnoolAndhra Pradesh 518007India Department of Science and Humanities Stanley College of Engineering&Technology for WomenAbidsHyderabadTelangana 500001India Department of Mechanical Engineering Prince Sultan Endowment for Energy and EnvironmentPrince Mohammad Bin Fahd UniversityAl-Khobar 31952Saudi Arabia RAK Research and Innovation Center American University of Ras Al Khaimah10021United Arab Emirates

We made an elaborate scrutiny on the soret and Joule effects of MHD mixed convective flow of an incompressible and electrically conducting viscous fluid past an infinite vertical porous plate taking Hall effects into *** technique is used to solve the non-dimensional *** effects of the various non-dimensional parameters on velocity,temperature and concentration within the boundary layer are *** that,computational deliberations or discussions are also undertaken on the effects of the pertinent or significant parameters on the skin-friction coefficient and rates of heat and mass transfer in terms of the Nusselt and Sherwood numbers *** concentration distribution increases with increase in soret effect and decrease with increase in chemical reaction *** increase in Prandtl number results to decrease the temperature *** the primary and secondary velocity components and temperature increases with increasing heat source *** friction coefficient decreases with an increase in permeability parameter,whereas it shows reverse effect for thermal and mass Grashof *** number increases with an increase in Prandtl *** number reduces with increasing soret number.

关键词： Hall effects soret number Porous medium Joules dissipation Chemical reaction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Influence of Anisotropic Permeability and soret Effect on the Convective Heat and Mass Transfer through a Porous Cavity Saturated by a Non-Newtonian Fluid

引用

Engineering（科研） 2023年第12期15卷 843-866页

作者： Dieudonné Kouke Julien Yovogan Laboratoire d’Energétique et de Mécanique Appliquées LEMA-EPAC Université d’Abomey Calavi Cotonou Bénin Université Nationale des Sciences Technologies Ingénierie et Mathématiques Abomey Bénin

In this work, an analytical study is carried out on double-diffusive natural convection through a horizontal anisotropic porous layer saturated with a non-Newtonian fluid by using the Darcy model with the Boussinesq approximations. The horizontal walls of the system are subject to vertical uniform fluxes of heat and mass, whereas the vertical walls are assumed to be adiabatic and impermeable. The soret effect is taken into consideration. Based on parallel flow approximation theory, the problem is solved in the limit of a thin layer and documented the effects of the physical parameters describing this investigation.

关键词： soret number Heat and Mass Transfer Non-Newtonian Fluid Isotropy Ani-sotropy Supercritical Rayleigh number

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：