نتایج جستجو برای: initial conditions or decay rates
تعداد نتایج: 4536190 فیلتر نتایج به سال:
This paper presents the experimental study of transient cooling and condensation of the prototypical material flibe under conditions relevant to Heavy Ion Fusion (HIF) power plants. Superheated vapor is generated by a high-current, pulsed electrical discharge over a pool of liquid flibe. The excited vapor expands inside a temperature-controlled chamber designed to scale the initial density of t...
In this work, we consider the Cauchy problem for a diffusive Oldroyd-B model in three dimensions. Some optimal time-decay rates of solutions are derived via analysis upper and lower estimates provided that initial data small absolute value Fourier transform velocity is bounded below away from zero low-frequency region. It worth noticing independent fluid viscosity or coefficient, which differen...
investigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
For classical systems with anharmonic forces, Newton's equations for particle trajectories are nonlinear, while Liouville's equation for the evolution of functions of position and momentum is linear and is solved by constructing a basis of functions in which the Liouvillian is a tridiagonal matrix, which is then diagonalized. For systems that are chaotic in the sense that neighboring trajectori...
Abstract Decaying grid turbulence is considered at low Reynolds number (Rλ ~ 50) for different initial conditions. Three different grid geometries are used. Heat is injected via a mandoline at a distance of 1.5 M from the grid. The amount of heating is such that temperature may be treated as a passive scalar. A small contraction (1.36:1) is added at a distance of 11M downstream of the grid. The...
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the branching ratios of the Cabibbo-suppressed decay modesD0 → π−π+ and D0 → K−K+. We measured: Γ(D0 → K−K+)/Γ(D0 → π−π+) = 2.81 ± 0.10(stat) ± 0.06(syst), Γ(D0 → K−K+)/Γ(D0 → K−π+) = 0.0993 ± 0.0014(stat) ± 0.0014(syst), and Γ(D0 → π−π+)/Γ(D0 → K−π+) = 0.0353 ± 0.0012(stat) ± 0.0006(syst). These values ha...
Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the branching ratios of the Cabibbo-suppressed decay modesD0 → π−π+ and D0 → K−K+. We measured: Γ(D0 → K−K+)/Γ(D0 → π−π+) = 2.81 ± 0.10(stat) ± 0.06(syst), Γ(D0 → K−K+)/Γ(D0 → K−π+) = 0.0993 ± 0.0014(stat) ± 0.0014(syst), and Γ(D0 → π−π+)/Γ(D0 → K−π+) = 0.0353 ± 0.0012(stat) ± 0.0006(syst). These values ha...
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