نتایج جستجو برای: non isothermal heating rates
تعداد نتایج: 1751253 فیلتر نتایج به سال:
Grass pellets are a renewable resource that have energy content similar to that of wood. However, the higher ash and chlorine content affects combustion. Thermal degradation analysis of a fuel is useful in developing effective combustion. Thermogravimetric analysis (TGA) of the thermal degradation of grass pellets under inert (nitrogen) and oxidizing (air) atmospheres was conducted. Non-isother...
We consider non-gravitational heating effects on galaxy clusters on the basis of the Monte-Carlo modeling of merging trees of dark matter halos combined with the thermal evolution of gas inside each halo. Under the assumption of hydrostatic equilibrium and the isothermal gas profiles, our model takes account of the metallicity evolution, metallicity-dependent cooling of gas, supernova energy fe...
Induction heating is used in many industrial applications to heat electrically conductive materials. The coupled electromagnetic-thermal induction process non-linear general, and for ferromagnetic materials it becomes challenging since both the electromagnetic thermal responses are non-linear. As a result of existing non-linearities, simulating task. In present work, transient finite element so...
Thermal degradation of poly(lactic acid) (PLA), a biodegradable and bioabsorbable polyester, has been investigated under inert atmosphere using both isothermal and dynamic heating regimes.. Two kinetic models, one for isothermal and the other for dynamic heating regims were used to fit the experimental data. It has been demonstrated that the thermal degradation of PLA is a one-stage process wit...
The effect of temperature on structural response is a concern in engineering applications. literature has highlighted that applied loads change the system vibration behaviour. However, there limited information available about impacting dynamic response. This paper investigated heating rates effects modal parameters for both with crack and without conditions cantilever beam. A beam subjected to...
We consider non-isothermal torsional flow between two coaxial parallel plates with heat transfer at the upper rotating plate, constant temperature on the lower stationary plate, and no heat loss at the fluid-air interface. Viscous heating is modelled by a Nahme law with exponential dependence on temperature. Due to the highly nonlinear nature of the governing equations an exact solution is not ...
Rolling circle amplification (RCA) generates single-stranded DNAs or RNA, and the diverse applications of this isothermal technique range from the sensitive detection of nucleic acids to analysis of single nucleotide polymorphisms. Microwave chemistry is widely applied to increase reaction rate as well as product yield and purity. The objectives of the present research were to apply microwave h...
We present a scanning AC nanocalorimetry method that enables calorimetry measurements at heating and cooling rates that vary from isothermal to 2 × 10(3) K/s, thus bridging the gap between traditional scanning calorimetry of bulk materials and nanocalorimetry. The method relies on a micromachined nanocalorimetry sensor with a serpentine heating element that is sensitive enough to make measureme...
We consider a non-isothermal one-dimensional model of martensitic phase transitions that incorporates a finite bar with a non-monotone temperature-dependent stress–strain law and non-zero latent heat. Two dissipation mechanisms are considered: heat conduction and the internal viscous dissipation of kinetic origin. Time-dependent displacement and ambient temperature are prescribed at the ends of...
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