能源工程2026，Vol.46Issue(4)：21-29,9.DOI:10.16189/j.nygc.2026.04.004
横向侧边射流强化平板对流换热试验研究
Experimental investigation on convective heat transfer enhancement of a flat plate via a lateral jet in crossflow
摘要
Abstract
To investigate the mechanism of convective heat transfer enhancement of downstream flat plate by lateral jet in crossflow,an experimental setup was established.Temperature distributions and local convective heat transfer coefficients of the downstream flat plate were measured under varying Reynolds numbers(Re=5×10³～1×104)and jet-to-crossflow velocity ratios(r=0～8.92).Results indicate that at low jet-to-crossflow velocity ratios(e.g.r=0.57),the introduction of a lateral jet in crossflow slightly deteriorates the convective heat transfer performance of the downstream flat plate.However,as r increases,the convective heat transfer enhancement progressively improves,exhibiting an optimal jet-to-crossflow velocity ratio for maximum heat transfer augmentation.Further increasingrleads to gradual degradation of the enhancement.Within the studied Rerange of Rein the paper,the optimal performance is achieved atr=6.69,where the convective heat transfer coefficient of the downstream flat plate increases by over 50%.Combined theoretical analysis and numerical simulations reveal,the enhancement mechanism primarily originates from the lateral jets'promotion of fluid turbulence and formation of turbulent coherent structures,disrupt the thermal boundary layer of the heat transfer plate.When the central trajectory and spread width of the lateral jet cover the downstream flat plate,the fluid flow over the flat plate is compressed,forcing it closer to the heat transfer surface and thereby enhancing heat transfer.关键词
横向侧边射流/强化传热/射流速度比/中心轨迹/扩展宽度Key words
lateral jet in crossflow/jet-to-cross flow velocity ratio/heat transfer enhancement/central trajectory/spread width分类
能源科技引用本文复制引用
李国能,周珂,唐弘毅,郑友取..横向侧边射流强化平板对流换热试验研究[J].能源工程,2026,46(4):21-29,9.基金项目
国家自然科学基金资助项目(51476145),浙江"尖兵领雁+X"科技计划项目(2024C03116). （51476145）
