Effect of periodic heat transfer on the transient thermal behavior of a convective-radiative fully wet porous moving trapezoidal fin

作     者：B.J.GIREESHA M.L.KEERTHI B.J.GIREESHA;M.L.KEERTHI

作者机构：Department of PG Studies and Research in MathematicsKuvempu UniversityShankaraghatta 577451India 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2023年第44卷第4期

页      面：653-668页

核心收录：

学科分类：07[理学] 08[工学] 080103[工学-流体力学] 0807[工学-动力工程及工程热物理] 070102[理学-计算数学] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Department of Science and Technology,Govt of India for their support under the DST-FIST Programme for HEIs(No.SR/FST/MS-I/2018/23(C)) the University Grants Commission,New Delhi,India(No.CSIR-UGC NET DEC.2019)/(Student ID:191620111468)for the financial support in the form of UGC-Junior Research Fellowship。 

主　　题：convection fully wet porous fin trapezoidal profile moving fin unsteady periodic thermal condition 

摘      要：A moving trapezoidal profiled convective-radiative porous longitudinal fin wetted in a single-phase fluid is considered in the current article.The periodic variation in the fin base temperature is taken into account along with the temperature sensitive thermal conductivity and convective heat transfer coefficients.The modeled problem,which is resolved into a non-linear partial differential equation(PDE),is made dimensionless and solved by employing the finite difference method(FDM).The results are displayed through graphs and discussed.The effects of amplitude,frequency of oscillation,wet nature,Peclet number,and other relevant quantities on the distribution of temperature through the fin length and with the dimensionless time are investigated.It is deciphered that the periodic heat transfer gives rise to the wavy nature of the fin thermal profile against time.The analysis is beneficial in the design of fin structures for applications like solar collectors,space/airborne applications,and refrigeration industries.