naa a22 4500 510766064 CHVBK 20180411083157.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11630-013-0638-6 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0638-6 Pressure of Newtonian fluid flow through curved pipes and elbows [Elektronische Daten] [Hao Zhang, Xinxin Zhang, Haosen Sun, Mingjiu Chen, Xiaoyang Lu, Yuancheng Wang, Xueting Liu] Under conditions of high temperature and high pressure, the non-uniformity of pressure loads has intensified the stress concentration which impacts the safety of curved pipes and elbows. This paper focuses on the pressure distribution and flow characteristic in a curved 90° bend pipe with circular cross-sections, which are widely used in industrial applications. These flow and pressure characteristics in curved bend pipes have been researched by employing numerical simulation and theoretical analysis. Based on the dimensionless analysis method a formula for the pressure of Newtonian fluid flow through the elbow pipes is deduced. Also the pressure distributions of several elbows with different curvature ratio R/D are obtained by numerical methods. The influence of these non-dimensional parameters such as non-dimensional curvature ratio, Reynolds number and non-dimensional axial angle α and circumferential angle β on the pressure distribution in elbow pipes is discussed in detail. A number of important results have been achieved. This paper provides theoretical and numerical methods to understand the mechanical property of fluid flow in elbow pipes, to analyze the stress and to design the wall thickness of elbow pipes. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Newtonian fluid nationallicence Dimensional analysis nationallicence Pressure formula nationallicence Numerical study nationallicence Zhang Hao Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut Zhang Xinxin Department of Thermal Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut Sun Haosen Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut Chen Mingjiu Shandong Jianzhu University Archives, 250101, Jinan, China aut Lu Xiaoyang Institute of Engineering Mechanics, Shandong Jianzhu University, 250101, Jinan, China aut Wang Yuancheng Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut Liu Xueting Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut Journal of Thermal Science Springer Berlin Heidelberg 22/4(2013-08-01), 372-376 1003-2169 22:4<372 2013 22 11630 https://doi.org/10.1007/s11630-013-0638-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0638-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Hao Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut NATIONALLICENCE 700 1- Zhang Xinxin Department of Thermal Engineering, University of Science and Technology Beijing, 100083, Beijing, China aut NATIONALLICENCE 700 1- Sun Haosen Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut NATIONALLICENCE 700 1- Chen Mingjiu Shandong Jianzhu University Archives, 250101, Jinan, China aut NATIONALLICENCE 700 1- Lu Xiaoyang Institute of Engineering Mechanics, Shandong Jianzhu University, 250101, Jinan, China aut NATIONALLICENCE 700 1- Wang Yuancheng Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut NATIONALLICENCE 700 1- Liu Xueting Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, 250101, Jinan, China aut NATIONALLICENCE 773 0- Journal of Thermal Science Springer Berlin Heidelberg 22/4(2013-08-01), 372-376 1003-2169 22:4<372 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer