in this study, fluid flow and energy separation in a micro-scale ranque-hilschvortex tube are numerically investigated. the flow is assumed as 2d, steady,compressible ideal gas, and shear-stress-transport sst k-w is found to be a bestchoice for modeling of turbulence phenomena. the results are in a good agreementwith the experimental results reported in the literature. the results show that flu...

The development of advanced and intelligent measurement instruments in recent years has increased the intelligence modern energy systems, especially power systems. Besides, with advancement conversion technologies, these systems benefit from multi-carrier resources. Accordingly, this paper presents a model smart city which considers various components, including transportation system (STS), mic...

Multicarrier energy systems create new challenges as well opportunities in future systems. One of these is the interaction among multiple and hubs different markets. By advent local thermal market many countries, hubs' scheduling becomes more prominent. In this article, a approach to offered, called virtual hub (VEH). The proposed concept hub, which named VEH referred an architecture based on b...

A p-hub center network design problem consists of some nodes as hubs and allocation of non-hub nodes to them wherein the maximum travel times between any pair of nodes is minimized. The distinctive feature of this study is proposing a new mathematical formulation for modeling costs in a p-hub center problem. Here, instead of considering costs as a linear function of distance, for the first time...

Wireless sensor networks are inherently plagued by problems of node failure, interference to communications from environmental noise and energy-limited sensor motes. These problems pose conflicting issues in the design of suitable routing protocols. Several existing reliable routing protocols exploit message broadcast redundancy and hop count as routing metrics and their performance trade-offs ...