New method for the determination of convective heat transfer coefficient in fully-developed laminar pipe flow

作     者：Ji Lin Yongxing Hong Jun Lu 林继;洪永兴;陆俊

作者机构：Key Laboratory of Ministry of Education for Coastal Disaster and ProtectionHohai UniversityNanjing 210098China College of Mechanics and MaterialsHohai UniversityNanjing 211100China Nanjing Hydraulic Research InstituteHujuguan 34 RoadNanjing 210024China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2022年第38卷第1期

页      面：100-109页

核心收录：

学科分类：080704[工学-流体机械及工程] 07[理学] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 070102[理学-计算数学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(Grant No.12072103) the Fundamental Research Funds for the Central Universities(Grant No.B200202126) the Natural Science Foundation of Jiangsu Province(Grant No.BK20190073) the State Key Laboratory of Acoustics,Chinese Academy of Sciences(Grant No.SKLA202001) the China Postdoctoral Science Foundation(Grant Nos.2017M6I 1669 and 2018T110430) 

主　　题：Convective heat transfer Laminar flow Pipe wall temperature parameter Similarity analysis 

摘      要：Convective heat transfer coefficient is one of the most vital parameters which reveals the thermal efficiency of a pipe *** obtain such coefficients for problems with variable pipe wall temperature,numerical iterative methods should be used which could be time-consuming and less *** this paper,thermophysical properties of fluids are assumed to be *** define a variable related to the temperature gradient of the pipe wall and study the varying law of the local ***,a sample-based scheme is proposed to avoid the calculation of a time-consuming problem in the use of solutions with low computing *** verify its accuracy,several problems in normal circle pipes with variable factors,such as the various temperatures of the pipe wall,the different radius of the pipe,and various velocities of fluid flow,are well ***,its validity in a convergent pipe is also *** the obtained results,the high accuracy and efficiency of the proposed scheme can be ***,the proposed scheme for determining the convective heat transfer coefficient has great potential in engineering problems.