Abstract The effective thermal expansion coefficient β∗ of a binary viscoelastic composite is shown to be frequency dependent even if the thermal expansion coefficients βA and βB of both constituents are themselves frequency independent. Exact calculations for binary viscoelastic systems show that β∗ is related to constituent values βA, βB , volume fractions, and bulk moduli KA, KB , as well as...

A simple finite-dimensional mechanism is described that appears to be responsible for the presence of bursts near onset of primary instability in a number of fluid systems. The manifestation of the mechanism differs dramatically from system to system, but the mechanism is common to all of them. The geometrical ideas behind the mechanism are discussed, and the results applied to three systems, (...

This paper presents a review of hydrogen production systems using geothermal energy, showing the importance and potential this technology in addition to main obstacles facing domain. The effect several parameters was taken into consideration, such as fluid temperature, water electrolysis working fluid, type power cycle. different types plants were also compared, namely, flash, binary, flash-bin...

distributed generations (dgs) are utilized to supply the active and reactive power in the transmission and distribution systems. these types of power sources have many benefits such as power quality enhancement, voltage deviation reduction, power loss reduction, load shedding reduction, reliability improvement, etc. in order to reach the above benefits, the optimal placement and sizing of dg is...