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中文摘要：
本文进行了钝体头锥发汗冷却的实验研究，揭示了注入率、主流温度以及主流Re数对发汗冷却壁温及冷却效率的影响规律。结果表明：发汗冷却对于绕流钝体这种主流为曲面外流的情况依然能以较低的注入率对壁面进行有效的热防护。头锥驻点壁温较高，发汗冷却效率较低；从驻点至下游段壁温不断降低；冷却效率随主流Re数增加而降低。在接近下游处由于尾迹流与钝体底部的换热导致壁温有所增加。
英文摘要：
The experimental investigation of transpiration cooling on a blunt nosecone was implemented in this paper, it reveals the rules of the influence of blowing ratio, main flow temperature and Re number on the transpiration cooling wall temperature and cooling efficiency. The results show that transpiration cooling can provide effective thermal protection with lower blowing ratio on blunt body surfaces, over which the main flow is curved external flow. The nosecone stagnation point temperature is relatively high while the transpiration cooling efficiency is low; the wall temperature decrease from the stagnation point to downstream along the nosecone surface, the cooling efficiency decrease as the main flow Re increase. The convection heat transfer between the wake flow and nosecone bottom resulted in an increase of wall temperature near the downstream surface.
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