检索结果-南通市图书馆

Mathematical Analysis for Peristaltic Flow of Two Phase Nanofluid in a Curved Channel

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

Communications in Theoretical Physics 2015年第11期64卷 547-554页

作者： s.nadeem Iqra shahzadi Department of Mathematics Quaid-i-Azam University

This paper describes the theoretical analysis for peristaltic motion of water base nanoBuid containing distinct types of the nanoparticles like Cu,TiO_2,and Al_2O_*** of nano Quid are modelled and simplified by constructing the suppositions of low Reynolds number as well as long wave *** reduced equations are solved *** are represented through *** for the velocity,temperature,pressure rise and stream lines are analyzed *** work presented here is based on the fictitious values,however some other values can be tested experimentally.

关键词： peristaltic flow nanofluid curved channel exact so

Role of Inclined Magnetic Field and Copper Nanoparticles on Peristaltic Flow of Nanofluid through Inclined Annulus: Application of the Clot Model

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2017年第6期67卷 704-716页

作者： Iqra shahzadi s.nadeem Department of Mathematics Quaid-i-Azam University

A genuine neurotic condition is experienced when some blood constituents accumulate on the wall of the artery get withdrew from the wall, again join the circulatory system and coagulation occur. Role of copper nanoparticles and inclined magnetic field on the peristaltic flow of a nanofluid in an annular region of inclined annulus is *** represent the clot model by considering the small artery as an annulus whose outer tube has a wave of sinusoidal nature and inner tube has a clot on its walls. Lubrication approach is used to simplify the problem. Close form solutions are determined for temperature and velocity profile. Impact of related parameters on pressure rise, pressure gradient,velocity and streamlines are interpreted graphically. Comparison among the pure blood and copper blood is presented and analyzed. One main finding of the considered analysis is that the inclusion of copper nanoparticles enlarges the amplitude of the velocity. Therefore, the considered study plays a dominant role in biomedical applications.

关键词： inclined magnetic field copper nanoparticles inclined annulus clot model exact solution

Peristaltic flow of a heated Jeffrey fluid inside an elliptic duct:streamline analysis

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2021年第4期42卷 583-592页

作者： s.nadeem s.AKHTAR A.sALEEM Department of Mathematics Quaid-i-Azam University 45320Islamabad 44000Pakistan Department of Anatomy School of DentistryShaheed Zulfiqar Ali Bhutto Medical UniversityIslamabad 44000Pakistan

The peristaltic flow of a heated Jeffrey fluid inside a duct with an elliptic cross-section is studied.A thorough heat transfer mechanism is interpreted by analyzing the viscous effects in the energy *** governing mathematical equations give dimensionless partial differential equations after *** final simplified form of the mathematical equations is evaluated with respect to the relevant boundary conditions,and the exact solution is *** results are further illustrated by graphs,and the distinct aspects of peristaltic flow phenomena are discussed.

关键词： peristalsis elliptic duct Jeffrey fluid streamline

study of Radially Varying Magnetic Field on Blood Flow through Catheterized Tapered Elastic Artery with Overlapping stenosis

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2015年第11期64卷 537-546页

作者： s.nadeem s.Ijaz Department of Mathematics Quaid-i-Azam University

A precise model has been developed for studying the inBuence of metallic nanoparticles on blood Row through catheterized tapered elastic arteries with radially varying magnetic *** model is solved under the mild stenosis approximation by considering blood as viscous *** influence of different Bow parameters associated with this problem such as Hartmann number,nanoparticle volume fraction,Grashof number and heat source or sink parameter is analyzed by plotting the graphs of the wall shear stress,resistance impedance to blood flow and stream *** inEuence of the radially varying magnetic field on resistance impedance to Bow is analyzed and it is observed that the signiBcantly strong magnetic force tends to increase in resistance.

关键词： blood flow overlapping stenosis radially varying m

simulation of Variable Viscosity and Jeffrey Fluid Model for Blood Flow Through a Tapered Artery with a stenosis

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2012年第1期57卷 133-140页

作者： Noreen sher Akbar s.nadeem Department of Mathematics Quaid-i-Azam University 45320Islamabad 44000Pakistan Department of Mathematics&Natural sciences Prince Mohammad Bin Fahd UniversityP.O.Box 1664Al Khobar 31952Kingdom of Saudi Arabia

Non-Newtonian fluid model for blood flow through a tapered artery with a stenosis and variable viscosity by modeling blood as Jeffrey fluid has been studied in this paper. The Jeffrey fluid has two parameters, the relaxation time A1 and retardation time A2. The governing equations are simplified using the case of mild stenosis. Perturbation method is used to solve the resulting equations. The effects of non-Newtonian nature of blood on velocity profile, temperature profile, wall shear stress, shearing stress at the stenotsis throat and impedance of the artery are discussed. The results for Newtonian fluid are obtained as special case from this model.

关键词： Jeffrey two constant fluid model blood flow tapered artery stenosis variable viscosity analyticalsolution

Endoscopic Effects on Peristaltic Flow of a Nanofluid

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2011年第10期56卷 761-768页

作者： Noreen sher Akbar s.nadeem Department of Mathematics Quaid-i-Azam University 45320Islamabad 44000Pakistan

In the present investigation we have studied the peristaltic flow of a nanofluid in an endoscope. The flow is investigated in a wave frame of reference moving with velocity of the wave c. Analytical solutions have been calculated using Homotopy perturbation method （HPM） for temperature and nanoparticle equation while exact solutions have been calculated for velocity and pressure gradient. Numerical integration have been used to obtain the graphical results for pressure rise and frictional forces. The effects of various emerging parameters are investigated for five different peristaltic waves. streamlines have been plotted at the end of the article.

关键词： peristaltic flow nanofluid endocope Homotopy perturbation method (HPM)

Heat transfer analysis of Williamson fluid over exponentially stretching surface

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2014年第4期35卷 489-502页

作者： s.nadeem s.T.HUssAIN Department of Mathematics Quaid-i-Azam University

This study explores the effects of heat transfer on the Williamson fluid over a porous exponentially stretching surface. The boundary layer equations of the Williamson fluid model for two dimensional flow with heat transfer are presented. Two cases of heat transfer are considered, i.e., the prescribed exponential order surface temperature （PEsT） case and the prescribed exponential order heat flux （PEHF） case. The highly nonlinear partial differential equations are simplified with suitable similar and non-similar variables, and finally are solved analytically with the help of the optimal homotopy analysis method （OHAM）. The optimal convergence control parameters are obtained, and the physical fea- tures of the flow parameters are analyzed through graphs and tables. The skin friction and wall temperature gradient are calculated.

关键词： optimal homotopy analysis method (OHAM) Williamson fluid expo-nential stretching permeable wall heat transfer prescribed exponential order surfacetemperature (PEsT) prescribed exponential order heat flux (PEHF)

Partial slip effect on non-aligned stagnation point nanofluid over a stretching convective surface

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2015年第1期24卷 369-376页

作者： s.nadeem Rashid Mehmood Noreen sher Akbar Department of Mathematics Quaid-i-Azam University 45320Islamabad 44000Pakistan DBs&H CEMENational University of Sciences and TechnologyIslamabadPakistan

The present study inspects the non-aligned stagnation point nano fluid over a convective surface in the presence of partial slip. Two types of base fluids namely water and kerosene are selected with Cu nanoparticles. The governing physical problem is presented and transformed into a system of coupled nonlinear differential equations using suitable similarity transformations. These equations are then solved numerically using midpoint integration scheme along with Richardson extrapolation via Maple. Impact of relevant physical parameters on the dimensionless velocity and temperature profiles are portrayed through graphs. Physical quantities such as local skin frictions co-efficient and Nusselt numbers are *** is detected from numerical computations that kerosene-based nano fluids have better heat transfer capability compared with water-based nanofluids. Moreover it is found that water-based nanofluids offer less resistance in terms of skin friction than kerosene-based fluid. In order to authenticate our present study, the calculated results are compared with the prevailing literature and a considerable agreement is perceived for the limiting case.

关键词： partial slip non-aligned stagnation point nanofluid stretching convective surface

Effects of induced magnetic field on peristaltic flow of Johnson-segalman fluid in a vertical symmetric channel

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2010年第8期31卷 969-978页

作者： s.nadeem N.s.AKBAR Department of Mathematics Quaid-i-Azam University

In this paper, the influence of heat transfer and induced magnetic field on peristaltic flow of a Johnson-segalman fluid is studied. The purpose of the present investigation is to study the effects of induced magnetic field on the peristaltic flow of non-Newtonian fluid. The two-dimensional equations of a Johnson-segalman fluid are simplified by assuming a long wavelength and a low Reynolds number. The obtained equations are solved for the stream function, magnetic force function, and axial pressure gradient by using a regular perturbation method. The expressions for the pressure rise, temperature, induced magnetic field, pressure gradient, and stream function are sketched and interpreted for various embedded parameters.

关键词： induced magnetic field vertical symmetric channel Johnson-segalman fluid magnetohydrodynamics (MHD)