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 $\sigma_x$ or $\sigma_z$ 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

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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

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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