CAJ | 학술논문

以液体为燃料采用连续方式工作的某些动力设备，如某些燃气轮机、液体火箭发动机等，液体燃料经由喷嘴喷射进入横向气流中。与静止空气中的雾化过程相比，横向气流作用使雾化粒径发生变化，喷雾粒径与横向气流速度及喷嘴安装角密切相关，运行和设计这类燃烧设备时都需要对此加以考虑。通过试验和数值计算对横向气流中喷雾粒径及其变化规律进行了研究，结果表明，喷雾粒径数值计算与试验结果间吻合较好，但在喷雾雾滴与横向气流间相对速度相差较大区域，计算与试验结果一致性变差。
이액체위연료채용련속방식공작적모사동력설비，여모사연기륜궤、액체화전발동궤등，액체연료경유분취분사진입횡향기류중。여정지공기중적무화과정상비，횡향기류작용사무화립경발생변화，분무립경여횡향기류속도급분취안장각밀절상관，운행화설계저류연소설비시도수요대차가이고필。통과시험화수치계산대횡향기류중분무립경급기변화규률진행료연구，결과표명，분무립경수치계산여시험결과간문합교호，단재분무무적여횡향기류간상대속도상차교대구역，계산여시험결과일치성변차。
In the continuous engine fuelling with liquid,such as some type of gas turbines and liquid propulsors, the liquid fuel is injected into cross flow by nozzle in combustor. Different from the atomizing in the atmosphere,it is affected additionally by the interaction between the flow and droplet. So the size and distribution of the atomizing droplet will be coupled with the velocity of cross flow and the installation angle of the nozzle,which should be con-sidered in designing combustion devices. The droplet size injected intocross flow is investigated experimentally and numerically in this paper. It is shown that the simulation results correspond to those of the experiment in most cases very well. But their divergence becomes larger where the velocity difference between the cross flow and the droplet turns greater.