نتایج جستجو برای: laminar thermal boundary layer

تعداد نتایج: 628440  

Journal: :روش های عددی در مهندسی (استقلال) 0
سید غلامرضا اعتماد s. gh. etemad

the galerkin finite element method is used to solve the three dimensional continuity, momentum and energy equations for laminar newtonian and power-law model non-newtonian flow through horizontal circular tube. the governing equations are non-dimensionalized with respect to specific variables and converted into algebraic equations using appropriate elements. to accelerate convergence a combinat...

In the present paper, turbulent convection of CuO-Water Nanofluid in a vertical channel is investigated numerically. In order to simulate the flow, the fluid is considered as a continuous phase while the discrete nanoparticles are dispersed through it. The dispersion of CuO nanoparticles in different flow conditions are studied in order to find the effective mechanisms of particles dispersion i...

Journal: :international journal of nanoscience and nanotechnology 2014
a. zamzamian

fluids for various industrial applications because of their excellent thermal performance. this study analytically and experimentally examines the effects of nanoparticle dispersion on the entropy generation of eg–al2o3 nanofluid flows through a helical pipe as a heat exchanger under constant wall heat flux thermal boundary condition in laminar regime. it is found that adding nanoparticles impr...

2004
M. Lang O. Marxen U. Rist S. Wagner

A laminar boundary layer separates in a region of adverse pressure gradient, undergoes transition, and finally the turbulent boundary layer reattaches, forming a laminar separation bubble (LSB). Laminar-turbulent transition within such a LSB is investigated by means of Laser-Doppler-Anemometry (LDA), Particle Image Velocimetry (mono PIV and stereoscopic PIV (SPIV)) and direct numerical simulati...

H. Basirat Tabrizi, M. B. Menhaj and A. Shabani,

A novel neuro-based method is introduced to solve the laminar boundary layer and the turbulent free jet equations. The proposed method is based on cellular neural networks, CNNs, which are recently applied widely to solve partial differential equations. The effectiveness of the method is illustrated through some examples.

H. Basirat Tabrizi, M. B. Menhaj and A. Shabani,

A novel neuro-based method is introduced to solve the laminar boundary layer and the turbulent free jet equations. The proposed method is based on cellular neural networks, CNNs, which are recently applied widely to solve partial differential equations. The effectiveness of the method is illustrated through some examples.

Journal: :journal of heat and mass transfer research 0
sanatan das university of gour banga, malda 732 103, wb, india akram ali university of gour banga, malda 732 103, india rabindra nath jana jana vidyasagar university, midnapore 721 102, india

this paper addresses the combined effects of couple stresses, thermal radiation, viscous dissipation and slip condition on a free convective flow of a couple stress fluid induced by a vertical stretching sheet. the cogley- vincenti-gilles equilibrium model is employed to include the effects of thermal radiation in the study. the governing boundary layer equations are transformed into a system o...

Journal: :international journal of industrial mathematics 0
k. l. krupa ‎lakshmi‎ department of studies and research in mathematics, kuvempu university, shimoga-577 451, karnataka, india. b. j. ‎gireesha‎ department of studies and research in mathematics, kuvempu university, shimoga-577 451, karnataka, ‎india.‎ rama s r gorla department of mechanical engineering, cleveland state ‎university, cleveland, ohio, ‎usa. b. mahanthesh‎ department of mathematics and statistics, christ ‎university, bangalore-560027, karnataka, india.‎

‎the problem of two-phase mhd boundary layer flow, heat and mass transfer over a stretching sheet with fluid-particle suspension and thermal radiation has been studied. the effect of mass transfer in dusty fluid over a stretching sheet is considered for the first time. the governing equations are reduced to a set of non-linear ordinary differential equations under suitable similarity transforma...

Journal: :مکانیک سیالات و آیرودینامیک 0
محمود سالاری ابوالفضل شیخ زاده

in this research, shock wave motion, shock/boundary layer interaction, and flow separation in a transonic flow over a naca0012 airfoil were investigated experimentally. thirteen kulite sensors were utilized for measurement of pressure fluctuations over the airfoil. experiments were performed for angles of attack between -4 to 4 degrees and flow mach numbers of m= 0.39 to 0.82. the kulite sensor...

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