JOURNAL Of ETHNOLOGY

为了研究不同孔型对平板气膜冷却的影响,针对圆形,扇形,水滴形,收敛缝形四种气膜出流孔型的流动和传热特性进行了数值模拟。研究结果表明,圆形孔、扇形孔和水滴形孔气膜出口下游出现从中心向上抬升的反向旋转涡对,将主流燃气卷吸进来；收敛缝形孔在侧向的扩张型面使得气膜出流在展向的覆盖更为均匀,这有效地阻止了高温气体的侵入；在相同吹风比下,收敛缝形孔在气膜出口附近区域的平均绝热冷却效率则明显要高于其余三种孔,随着吹风比的增大,这种差距越发明显；孔型对对流换热系数增强比的影响区域仅局限在邻近气膜孔出口大约7倍气膜孔径的范围内。 

Numerical Simulation on Effects of Different Film Cooling Holes on Plate

The Journal to Marxism Leninism, Mao Zedong thought, Deng Xiaoping Theory and the scientific development concept as a guide, a blend of academic thought and tracking academic frontier, the ethnology research results show that prominent southwestern ethnic studies characteristics, to the prosperity of the national culture of science, enhance national unity, to accelerate the pace of economic construction in ethnic regions and realize the service of scientific development in ethnic regions. Pay attention to the theoretical basis of research and discussion, concerned about the hot and difficult issues, advocated the theory with practice, encourage the study of realistic problems, especially welcome academic theoretical articles and large fieldwork report about multiculturalism, indigenous peoples, ethnic groups, folklore, gender, cultural heritage and other topics related to ethnology and anthropology and all kinds of stage of project funds of the state and provinces or departments. Authors, who wish to submit articles for consideration to be published in the Journal of Ethnology, should submit the article in APA format to the editorial department of the journal by e-mail: cn511731@vip.sina.com. We use a double blind anonymous referee system. In addition, native English speaking experts from the discipline will be invited to review all English information in the journal.