In order to achieve the best performance of a thermal system, two major analyses must be carried out on system: energy and entropy generation. The scenario is mechanism in which system has minimum generation highest Nu number. this regard, we investigated number fluid flow through tubes various cross-sections, namely circular tubes, square channels, rectangular ducts. Additionally, addition nan...

Only seldom are square/rectangular shapes found in nature. One notable exception is the bird feather rachis, which raises the question: why is the proximal base round but the distal end square? Herein, it is uncovered that, given the same area, square cross sections show higher bending rigidity and are superior in maintaining the original shape, whereas circular sections ovalize upon flexing. T...

The article investigates the temperature prediction in rectangular timber cross-sections exposed to fire. Timber density, exposure time, and point coordinates within cross-section are treated as inputs determine temperatures. A total of 54,776 samples wood with a variety characteristics were considered this study. Of sample data, 70% was dedicated training networks, while remaining 30% used for...

Application of high strength steel (HSS – S420 and higher grades) is growing nowadays in the civil engineering praxis due to numerous advantages compared normal (NSS S235-S355). The accurate consideration flexural buckling resistance HSS structures highly important design. Higher yield indicates applicability smaller cross-sections, which might be more sensitive for stability problems. purpose ...

in this paper, a new propagation model based on utd for multiple diffraction paths in cellular mobile radio communications in urban environments is proposed. moreover, the most rigorous novel utd-based expressions for multiple diffractions by buildings and excess path losses are d - rived and analyzed. for this purpose, building rows are supposed to have rectangular cross-sections with the same...

This paper reports an experimental and numerical study of the cross-sectional behaviour cold-formed high-strength steel (HSS) square rectangular hollow section (SHS RHS) members. Six stub column tests, six 3-point three 4-point bending tests have been carried out, followed by development accurate finite element (FE) models a parametric study. Based on test FE results, design rules for slender c...