3,948 research outputs found
Radiation Effects on the Flow near the Stagnation Point of a Stretching Sheet
The present paper is concerned with the study of the radiation effects (Rosseland model) on the flow of an incompressible viscous fluid over a flat sheet near the stagnation point. The system of ordinary differential equations is solved numerically using the Runge-Kutta method coupled with a shooting technique. The results show that a boundary layer is formed and its thickness increases with the radiation, velocity and temperature parameters and decreases when the Prandtl number is increased
Voronovskaja-type theorem for certain GBS operators
In this paper we will demonstrate a Voronovskaja-type theorem and approximation theorem for GBS operator associated to a linear positive operator
Inductively shunted transmon qubit with tunable transverse and longitudinal coupling
We present the design of an inductively shunted transmon qubit with
flux-tunable coupling to an embedded harmonic mode. This circuit construction
offers the possibility to flux-choose between pure transverse and pure
longitudinal coupling, that is coupling to the or degree
of freedom of the qubit. While transverse coupling is the coupling type that is
most commonly used for superconducting qubits, the inherently different
longitudinal coupling has some remarkable advantages both for readout and for
the scalability of a circuit. Being able to choose between both kinds of
coupling in the same circuit provides the flexibility to use one for coupling
to the next qubit and one for readout, or vice versa. We provide a detailed
analysis of the system's behavior using realistic parameters, along with a
proposal for the physical implementation of a prototype device.Comment: 14 pages, 14 figure
Flow and Heat Transfer on a Continuous Porous Surface Moving in Parallel with or Reversely to a Free Stream
 
Interference in interacting quantum dots with spin
We study spectral and transport properties of interacting quantum dots with
spin. Two particular model systems are investigated: Lateral multilevel and two
parallel quantum dots. In both cases different paths through the system can
give rise to interference. We demonstrate that this strengthens the multilevel
Kondo effect for which a simple two-stage mechanism is proposed. In parallel
dots we show under which conditions the peak of an interference-induced orbital
Kondo effect can be split.Comment: 8 pages, 8 figure
Free Convection over 3 Vertical Flat Plate with a Variable Wall Temperature and Internal Heat Generation in a Porous Medium Saturated with a Non-Newtonian Fluid
A boundary-layer analysis is performed in this paper for the free convection flow over a vertical flat plate embedded in a porous medium saturated by a power-law non-Newtonian fluid. It is assumed that the temperature is a function of the distance from the origin, and that there is an internal heat source within the porous medium. Similarity solutions are derived for the governing equations and then used to study the effects of the power-law temperature parameter and power-law fluid index on the heat transfer characteristics
The effects of suction or injection in boundary layer flow and heat transfer on a continuous moving surface
 
Free Convection Boundary Layer over a Vertical Cone in a Non- Newtonian Fluid Saturated Porous Medium with Internal Heat Generation
The steady free convection boundary layer over a vertical cone embedded in a porous medium filled with a non-Newtonian fluid with an exponential decaying internal heat generation is studied in this paper. We adopt for the non-Newtonian fluid the well-known model of a power-law fluid. Two cases are considered, variable wall temperature (VWT) and variable heat flux (VHF), respectively. As for the classical problem without internal heat generation, it has been found that similarity solutions exist for the case studied here, when internal heat generation is present in the porous medium. The similarity equations are solved numerically using a very efficient implicit finite-difference scheme. The obtained results are compared with those from the open literature and it is shown that they are in very good agreement
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