نتایج جستجو برای: adiabatic engine

تعداد نتایج: 84257  

Journal: :Physical Review A 2021

Adiabatic passage employs a slowly varying time-dependent Hamiltonian to control the evolution of quantum system along eigenstates. For processes finite duration, exact time evolving state may deviate from adiabatic eigenstate at intermediate times, but in numerous applications it is observed that this deviation reaches maximum and then decreases significantly towards end process. We provide st...

Journal: :International Journal of Aerospace Engineering 2022

In order to rapidly predict the performance of hydrocarbon-fueled regeneratively cooled scramjet engine in system design, a quasi-one-dimensional model has been developed. The consists supersonic combustor with finite-rate chemistry and cooling channel real gas working medium, which are governed by two sets ordinary differential equations separately. Additional models for wall friction, heat tr...

2007
Klaus Jung

The adiabatic theorem in quantum mechanics can be understood as an eeect of phase space tunneling 12]. This allows us to use micro-local methods from the theory of pseudo diierential operators to proof an adiabatic theorem where the Hamiltonian (as a function of time) belongs to some Gevrey class. These classes are of interest since they can be used to model a compactly supported and smooth swi...

2013
Pooja Chaudhary Dipti Girdhar

In recent years the adiabatic techniques have been used to reduce power consumption in various high end processors. Various adiabatic logic circuits have been proposed based on the energy recovery principle. The term “adiabatic” is derived from a reversible thermodynamic process and it stands for a system where a transformation takes place in such a way that no gain or loss of heat or energy oc...

Journal: :NMR in biomedicine 1997
A Tannús M Garwood

Adiabatic pulses are sometimes considered to be mysterious and exotic entities which are difficult to understand, complex to generate and impractical to implement. This work is an attempt to bring familiarity and to fulfill the preliminary needs of anyone interested in learning more about this subject. The response of magnetization to stimuli produced by adiabatic pulses is analyzed using vecto...

2011
L. C. Zhang

Adiabatic shear banding during high speed machining is important to understand material removal mechanisms. This paper investigates the microstructure of adiabatic shear bands (ASBs) in the serrated chips produced during the high speed machining of AISI 1045 hardened steel. Optical microscope, scanning electronic microscope(SEM) and transmission electronic microscope(TEM) were used to explore t...

2014
Yasuhiro Takahashi Nazrul Anuar Nayan Toshikazu Sekine Michio Yokoyama

In this paper, the authors propose a novel static random access memory (SRAM) that employs the adiabatic logic principle. To reduce energy dissipation, the proposed adiabatic SRAM is driven by two trapezoidal-wave pulses. The cell structure of the proposed SRAM has two high-value resistors based on a p-type metal-oxide semiconductor transistor, a cross-coupled n-type metal-oxide semiconductor (...

2015
C. S. Harmya Sreeja N. Sri Krishna Yadav

In this paper, we describe adiabatic Vedic multiplier using efficient charge recovery logic (ECRL) and energy efficient adiabatic logic (EEAL). In today’s world low power hindrance have become a major important factor in modern VLSI design. Because of the increasingly draconian demands for battery space and weight in portable multimedia devices, energy productive and high yielding circuits are ...

2016
Shi Song Xia

We present an efficient scheme to quickly generate three-qubit Greenberger–Horne–Zeilinger (GHZ) states by using three superconducting qubits (SQs) separated by two coplanar waveguide resonators (CPWRs) capacitively. The scheme is based on quantum Zeno dynamics and the approach of transitionless quantum driving to construct shortcuts to adiabatic passage. In order to highlight the advantages, w...

2006

For the internal dynamics of molecules it is of crucial importance that nuclei are much heavier than electrons. This leads to the adiabatic picture of the nuclei motion with respect to the motion of electrons. In the adiabatic picture, the coordinates of nuclei play the role of external parameters with respect to the state of the electronic sub-system, that is they play the same role as the adi...

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