نتایج جستجو برای: thermal and mechanicalparameters
تعداد نتایج: 16874165 فیلتر نتایج به سال:
Thermal conductivity measurements have been used for the Way Ratai geothermal prospect area. The thermal conductivity method is used to evaluate the ability of a rock to deliver heat by conduction. In the area, many surface manifestations are scattered in various regions, where hot springs dominate these various manifestations. The thermal conductivity mapping of rocks is carried out around geo...
two different methods of bayesian segmentation algorithm were used with different band combinations. sequential maximum a posteriori (smap) is a bayesian image segmentation algorithm which unlike the traditional maximum likelihood (ml) classification attempts to improve accuracy by taking contextual information into account, rather than classifying pixels separately. landsat 7 etm+ data with pa...
to design equipment and facilities to dry, preserve and process pomegranates, it is necessary to know their specific heat and thermal conductivity. the objectives of this study were to determine the specific heat and thermal conductivity of pomegranates and develop mathematical estimation models for them. the effects of moisture content (15-75% w.b.) and temperature (5-20°c) on the thermal prop...
Increasing the population of cities and the growth and development of urban planning on the one hand and climate change on the other hand has affected the thermal balance of cities and has created thermal islands, so attention to the impact of design on the thermal comfort of urban spaces has become important. The study of the thermal performance of yards as common spaces between urban scale an...
In current study, the synthesis and characterization of novel thermally stable polyimides (PIs) containing an 1,3,4-oxadiazole moiety based on a diamine, i.e. 2,5-bis(3-amino-4-methyl benzene)-1,3,4-oxadiazole (BAMO), have been reported. The polymers were characterized using FT-IR and elemental analysis (CHN). Thermal and mechanical behaviours of the prepared PIs were studied by thermo-gravimet...
In recent decades, the use of nanofluids has attracted much attention due to its application in various fields such as medical and industries like oil and gas. The combination of nanoparticles with base fluids and its type can produce different results depending on the characteristics of the nanoparticles, one of which is the effect of changes in the viscosity and thermal conductivity of the na...
In this work, thermal degradation behavior of a solid composite propellant containing Epoxy/Ammonium perchlorateStrontium nitrateAnthracene composite was studied by simultaneous thrmogravimetric analysis and differential scanning calorimetry under dynamic nitrogen atmosphere at different heating rates. Variation curves of the thermal degradation activation energy of EpoxyAmmonium perchlorateStr...
background: today discussion thermal comfort due to technology advances and equipment application in the workplace for government and non-governmental organizations managers in the industrial and non-industrial environments, especially hospitals staff due to the diversity of people employed and the type of work they are doing of particular importance. this study was conducted to evaluate the ...
Due to increasing applications of extended surfaces as passive methods of cooling, study of thermal behaviors and development of mathematical solutions to nonlinear thermal models of extended surfaces have been the subjects of research in cooling technology over the years. In the thermal analysis of fin, various methods have been applied to solve the nonlinear thermal models. This paper focuses...
A Lattice Boltzmann method is applied to demonstrate the comparison results of simulating natural convection in an open end cavity using different hydrodynamic and thermal boundary conditions. The Prandtl number in the present simulation is 0.71, Rayleigh numbers are 104,105 and 106 and viscosities are selected 0.02 and 0.05. On-Grid bounce-back method with first-order accuracy and non-slip met...
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