Results 31 to 40 of about 4,242,074 (300)

A revised degree hours evaluation method for energy saving potential of free cooling systems

open access: yesXi'an Gongcheng Daxue xuebao, 2022
In order to make full use of outdoor free cooling sources to reduce building air conditioning energy consumption, accurately evaluate the potential of natural ventilation, and guide the selection and utilization of more free cooling systems, a revised ...
LYU Weihua   +3 more
doaj   +1 more source

Assessment Method of Comprehensive Energy Saving Potential of Distribution Network Considering Source-load Power Uncertainty

open access: yesZhongguo dianli, 2022
In order to effectively evaluate the energy-saving potential of active distribution network, the evaluation method of energy-saving transformation scheme of distribution network is studied.The K-means clus-tering method is employed to extract typical ...
Zuoxiang YANG   +4 more
doaj   +1 more source

Effect of Spalling Shape on Meshing Stiffness and Dynamics Characteristic of Gear

open access: yesJixie chuandong, 2020
The traditional research on spalling gear failure mainly focuses on the change of gear stiffness under different spalling depth and width,it has great limitations. Aiming at this problem,the influence of spalling shape and the spalling shape distribution
Tu Xuxin, Jian Xiaochun, Wu Shengli
doaj  

Calculation of Time-Varying Mesh Stiffness of Internal Mesh Transmission and Analysis of Influencing Factors

open access: yesApplied Sciences
Time-varying mesh stiffness (TVMS) of the internal mesh transmission is a significant source of excitation that causes vibration and noise in planetary gear systems, and is also an important parameter in dynamics analysis.
Jubo Li   +3 more
doaj   +1 more source

Energy controlled insertion of polar molecules in dense fluids

open access: yes, 2004
We present a method to search low energy configurations of polar molecules in the complex potential energy surfaces associated with dense fluids. The search is done in the configurational space of the translational and rotational degrees of freedom of ...
Coveney, Peter V.   +2 more
core   +1 more source

Split kinetic energy method for quantum systems with competing potentials [PDF]

open access: yesAnnals of Physics, 2012
For quantum systems with competing potentials, the conventional perturbation theory often yields an asymptotic series and the subsequent numerical outcome becomes uncertain. To tackle such kind of problems, we develop a general solution scheme based on a new energy dissection idea.
Mineo, H., Chao, Sheng D.
openaire   +2 more sources

Temperature dependent effective potential method for accurate free energy calculations of solids

open access: yes, 2013
We have developed a thorough and accurate method of determining anharmonic free energies, the temperature dependent effective potential technique (TDEP).
Abrikosov, Igor A.   +3 more
core   +2 more sources

Energy landscape of a Lennard-Jones liquid: Statistics of stationary points

open access: yes, 2000
Molecular dynamics simulations are used to generate an ensemble of saddles of the potential energy of a Lennard-Jones liquid. Classifying all extrema by their potential energy u and number of unstable directions k, a well defined relation k(u) is ...
A. Cavagna   +26 more
core   +1 more source

An \emph{ab initio} method for locating characteristic potential energy minima of liquids

open access: yes, 2009
It is possible in principle to probe the many--atom potential surface using density functional theory (DFT). This will allow us to apply DFT to the Hamiltonian formulation of atomic motion in monatomic liquids [\textit{Phys. Rev. E} {\bf 56}, 4179 (1997)]
D. C. Wallace   +7 more
core   +1 more source

Renormalization of the singular attractive $1/r^4$ potential [PDF]

open access: yes, 2004
We study the radial Schr\"odinger equation for a particle of mass $m$ in the field of a singular attractive $g^2/{r^4}$ potential with particular emphasis on the bound states problem.
A. M. Perelomov   +6 more
core   +3 more sources

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