燃烧室流体损失的试验研究

本文研究了燃烧室扩压器、涡流器、火焰筒各元件以及燃烧加热等流阻的计算方法。在试验研究基础上,整理出流阻的计算方法和流阻系数经验公式,可供今后燃烧室方案设计和燃烧室方案调试比较使用。研究的模型有 4种扩压器 (等压力梯度型面扩压器和突扩扩压器 );10种涡流器 (弯叶片和直叶片式涡流器,径向涡流器,小孔进气头部装置 );7种火焰筒 (环管燃烧室,环形燃烧室 );以及 7块进口流场畸变模拟板等。 

EMPIRIC FORMVLAE COMBUSTOR FLOW LOSSES

Approaches to calculation of the flow losses in compoments of the combustor,such as diffuser,swirler and flame tube,and the flow losses in combustor under combustion conditions are investigated.The empiric formulae are derived from tests.They feature simplicity and sufficient accuracy and are applicable to design and redesign of combustor.The tests were conducted on the models of 4 types of diffusers,10 kinds of swirlers 7 types of flame tubes and,7 simulators of inlet flow field distortion.In comparison with the existing methods,the presented method considerably improves the calculation of the flow losses in the diffuser.For the swirler the correlation between flow resistance and the discharge coefficient and the formula for heating losses are also found out.