【摘要】 作者在Ludwig风洞中进行了双排又排孔气膜冷却研究.实验利用膨胀波后的空气流作为主流,使用自制的微型铂膜热通量计首次在瞬态风洞中实现了沿主流和横向两个方向的传热测量.求出了气膜冷却绝热有效温比和传热系数.更多还原

【Abstract】 Techniques used in film-cooling experiments with two-staggered rows of holes in a Ludwig Tube wind tunnel are reported. Air flow following expansion waves is used as main flow. Heat transfer measurements with miniature platinum thin-film heat flux gauges are the first time conducted in a transient wind tunnel both along and across streamlines. Adiabetic effective temperature ratios and heat transfer coefficient are deducted herewith.11 figs and 5 refs.更多还原