STRUCTURE FUNCTION OF ASYMMETRICAL CYLINDRICAL VORTEX TRACTS AND SURFACE ROUGHNESS ACCOUNTING ON HYDRAULIC LOSSES IN THEM

Авіаційно-космічна техніка та технологія

关键词: структурна функція, циліндричний вихровий тракт, технологічний газогенератор, форсункові пристрої, гідравлічні характеристики цвт, шорсткість поверхні;   

DOI  :  

来源: DOAJ

【 摘 要 】

The aim of this work is the analysis of the structure of the asymmetrical cylindrical vortex tracts to determine the form of structure function, and limiting the circle of factors affecting travel loss. The analysis of theoretical and experimental works of foreign and domestic authors was done. The analysis has shown that the active development of new ones and improvement of existing injection and mixture formation units, front-line devices of different types of heat engines is carried out. According to many researchers, further improvement of pre-flaming processes provides ample opportunities to improve operational properties of flight vehicles heat engines. The analytic method of definition of structure function of asymmetrical cylindrical vortex tracts which are the base of injector units for air-feed jet burners and technological gas-generators has been proposed. The researches of the authors point to a significant effect of the asymmetry of a cylindrical vortex tract on travel loss in it. The analysis of cylindrical vortex tracts structure and obtaining structure function for them lets determine the hydraulic loss coefficient in single cell with given geometric parameters. The features of asymmetrical cylindrical vortex tracts geometrical characteristics with the account of already known relations for cylindrical vortex tracts defining regular structure of symmetrical cylindrical vortex tracts have been considered. The physical meaning and influence of structure function on hydraulic loss in cylindrical vortex tracts and also community of relations given for limited and cylindrical vortex tracts has been defined. The tracts with the same dimensions of grooves on bush and body were considered. These tracts confirm positive effect at the organization of mixing and atomizing liquids and heat transfer processes. Qualitative ideas about the process of flow in vortex tracts also let consider the cylindrical vortex tracts with the same grooves. The method of impact of surface roughness accounting on hydraulic losses in cylindrical vortex tracts has been proposed. The known Altshul's formula transformed for cylindrical vortex tracts has been obtained.

【 授权许可】

Unknown