نتایج جستجو برای: nonlinear thermal radiation

تعداد نتایج: 653704  

Journal: :international journal of industrial mathematics 2015
b. c. prasanna ‎kumara ‎‎g. k‎. ‎ ‎ramesh‎ a. j. chamkha‎ b. j. ‎gireesha‎‎

‎in the present analysis‎, ‎we study the boundary layer flow of an incompressible viscous fluid near the two-dimensional stagnation-point flow over a stretching surface‎. ‎the effects of variable thickness and radiation are also taken into account and assumed that the sheet is non-flat‎. ‎using suitable transformations‎, ‎the governing partial differential equations are first converted to ordin...

Journal: :iranian journal of science and technology (sciences) 2015
d. d. ganji

the aim of the present paper is to study the cu-water nanofluid flow and heat transfer characteristics of a stretching permeable cylinder. thermal radiation effect is considered in energy equation. the governing partial differential equations with the corresponding boundary conditions are reduced to a set of ordinary differential equations with the appropriate boundary conditions using similari...

Journal: :journal of computational and applied research in mechanial engineering - jcarme 0
l. ramamohan reddy department of mathematics, mekapati rajamohan reddy institute of technology and science, udayagiri, nellore district, a.p, india m. c. raju department of humanities and sciences, annamacharya institute of technology and sciences (autonomous), rajampet – 516126, a.p., india g. s. s. raju department of mathematics, jntua college of engineering pulivendula, pulivendula, a.p, india s. m. ibrahim department of mathematics, gitam university, vishakhaptanam, a.p. - 530045 india

the paper aims at investigating the effects of chemical reaction and thermal radiation on the steady two-dimensional laminar flow of viscous incompressible electrically conducting micropolar fluid past a stretching surface embedded in a non-darcian porous medium. the radiative heat flux is assumed to follow rosseland approximation. the governing equations of momentum, angular momentum, energy, ...

جمشید قنبری, , محسن شادمهری, ,

  This study demonstrates how thermal structures in the interstellar medium can emerge as a result of thermal instability. For a two-dimensional case, the steady state thermal structures was investigeted and it was shown that a large class of solutions exist. For a one –dimensional case the conductivity was found to be negligible. The effects of to cal cooling on the thermal instability were ex...

2013
B. Zeghmati

A numerical analysis used to simulate the effects of wavy surfaces and thermal radiation on natural convection heat transfer boundary layer flow over an inclined wavy plate has been investigated. A simple coordinate transformation is employed to transform the complex wavy surface into a flat plate. The boundary layer equations and the boundary conditions are discretized by the finite difference...

2004
W. W. Yuen W. K. Chow

Importance of thermal radiation for transition to flashover in a compartment fire will be demonstrated. A one zone model is developed with the objective of capturing the key mechanisms responsible for the initiation of flashover, i.e. physics of flashover. Thermal radiation is shown to be a key point and the inclusion of a three-dimensional radiation model is essential in the development of an ...

2008
Joshua J. Friess Herman Verlinde Joseph Henry

We use the matrix model to study the final state resulting from a coherent high energy pulse in 2-d string theory at large string coupling. We show that the outgoing signal produced via reflection off the potential has a thermal spectrum, with the correct temperature and profile to be identified with Hawking radiation. We confirm its origin as geometrical radiation produced by the gravitational...

Journal: :The British journal of ophthalmology 1976
M M Zaret W Z Snyder L Birenbaum

The case histories of two individuals exposed to thermal radiation emitted from an electric oven and range were presented. In one patient, earlier exposure to medical diathermy appears to have initiated delayed or late-appearing, capsular cataracts. Instead of the anticipated slow progression, the cataractogenesis was accelerated following recent, repeated exposure to the intense, infrared radi...

Journal: :international journal of advanced design and manufacturing technology 0
meysam atashafrooz department of mechanical engineering, shahid bahonar university of kerman, iran s. a. gandjalikhan nassab e. sadat behineh

in this paper, the effects of baffle on thermal characteristics of combined convection-radiation heat transfer in laminar flow adjacent to an inclined backward facing step (bfs) in a horizontal duct are investigated. a baffle is mounted on the top wall of channel downstream side of step. in this study, the fluid is treated as a gray, absorbing, emitting and scattering medium; therefore, in the ...

2012
Stav Zaitsev Oded Gottlieb Eyal Buks

The nonlinear dynamical behavior of a micromechanical resonator acting as one of the mirrors in an optical resonance cavity is investigated. The mechanical motion is coupled to the optical power circulating inside the cavity both directly through the radiation pressure and indirectly through heating that gives rise to a frequency shift in the mechanical resonance and to thermal deformation. The...

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