This study examines the intricate occurrences of thermal and solutal Marangoni convection in three-layered flows of viscous fluids,with a particular emphasis on their relevance to renewable energy systems.This researc...This study examines the intricate occurrences of thermal and solutal Marangoni convection in three-layered flows of viscous fluids,with a particular emphasis on their relevance to renewable energy systems.This research examines the flow of a three-layered viscous fluid,considering the combined influence of heat and solutal buoyancy driven Rayleigh-Bénard convection,as well as thermal and solutal Marangoni convection.The homotopy perturbation method is used to examine and simulate complex fluid flow and transport phenomena,providing important understanding of the fundamental physics and assisting in the optimization of various battery configurations.The inquiry examines the primary elements that influence Marangoni convection and its impact on battery performance,providing insights on possible enhancements in energy storage devices.The findings indicate that the velocity profiles shown graphically exhibit a prominent core zone characterized by the maximum speed,which progressively decreases as it approaches the walls of the channel.This study enhances our comprehension of fluid dynamics and the transmission of heat and mass in intricate systems,which has substantial ramifications for the advancement of sustainable energy solutions.展开更多
采用T2Cu和CuSi3焊丝在相同工艺参数下对厚度为1 mm的TC4钛合金及304不锈钢进行焊接,并借助光学显微镜(optical microscopy,OM)和扫描电镜(scanning electron microscopy,SEM)研究了两种焊丝下的TC4/304异种金属焊接熔池冶金行为.对比...采用T2Cu和CuSi3焊丝在相同工艺参数下对厚度为1 mm的TC4钛合金及304不锈钢进行焊接,并借助光学显微镜(optical microscopy,OM)和扫描电镜(scanning electron microscopy,SEM)研究了两种焊丝下的TC4/304异种金属焊接熔池冶金行为.对比分析了不同焊丝成分,尤其是Si元素的加入对TC4/304异种金属接头宏观成形、界面微观组织和力学性能的影响.结果表明,Si元素的加入使液态熔池流动性显著增强,消除了凹陷和孔洞等缺陷,解决了焊缝背部熔合不良问题,焊缝宏观成形显著改善.两种焊丝均有效阻隔了Ti,Fe原子,钛/铜界面未生成Ti-Fe化合物,但在焊缝中心以及铜/钢界面处生成了少量Ti-Fe相.CuSi3焊丝中充足的Si元素不仅使Ti5Si3相形核生长的更加充分,在熔池流动的作用下均匀分布于焊缝中,对接头起到弥散强化作用.与T2Cu焊丝相比,CuSi3焊丝所得接头的抗拉强度提升了81.4%,最高达到366.8 MPa.展开更多
基金Project(52276068)supported by the National Natural Science Foundation of China。
文摘This study examines the intricate occurrences of thermal and solutal Marangoni convection in three-layered flows of viscous fluids,with a particular emphasis on their relevance to renewable energy systems.This research examines the flow of a three-layered viscous fluid,considering the combined influence of heat and solutal buoyancy driven Rayleigh-Bénard convection,as well as thermal and solutal Marangoni convection.The homotopy perturbation method is used to examine and simulate complex fluid flow and transport phenomena,providing important understanding of the fundamental physics and assisting in the optimization of various battery configurations.The inquiry examines the primary elements that influence Marangoni convection and its impact on battery performance,providing insights on possible enhancements in energy storage devices.The findings indicate that the velocity profiles shown graphically exhibit a prominent core zone characterized by the maximum speed,which progressively decreases as it approaches the walls of the channel.This study enhances our comprehension of fluid dynamics and the transmission of heat and mass in intricate systems,which has substantial ramifications for the advancement of sustainable energy solutions.
