Повышение энергетических качеств турбобура
Дата
2015
ORCID
DOI
item.page.thesis.degree.name
item.page.thesis.degree.level
item.page.thesis.degree.discipline
item.page.thesis.degree.department
item.page.thesis.degree.grantor
item.page.thesis.degree.advisor
item.page.thesis.degree.committeeMember
Назва журналу
Номер ISSN
Назва тому
Видавець
НТУ "ХПИ"
Анотація
Предложена математическая модель рабочего процесса турбины, позволяющая производить прогнозную оценку энергетических качеств турбобура, а также оценить влияние точности изготовления лопастных систем проточной части на энергетические качества турбины. Математическая модель позволяет описывать рабочий процесс в проточной части с различной степенью детализации, в зависимости от стадии проектирования. Произведен анализ влияния выходного угла лопастей рабочего колеса на КПД турбобура, собранного из рабочих колес, имеющих небольшие отклонения.
A mathematical model of working process of the turbine, enabling a predictive assessment of the energy characteristics of the turbodrill, and to assess the influence of the manufacturing precision of vane systems on flow-through part of the energy quality of the turbine. The mathematical model allows to describe the workflow in the flow part, with varying degrees of detail, depending on the design stage. The proposed method of modeling allows us to assess the impact of deviations of angles of the vane systems taking place at their manufacturing energy characteristic of the turbine and to investigate the influence of scatter of actual geometrical parameters of a flowing part on the energy quality of the turbodrill. Analysis of the data shows a significant change in the coefficient of the theoretical intensity and, as a consequence, the efficiency of the turbodrill with a small change in output angle of a blade system of the impeller. The results confirm a significant influence of the deviation of the output angle of a blade system of the impeller on the energy qualities of the turbodrill. In the assembly of the turbodrill should be a selection of impellers for the specified geometric parameter that will improve the energy qualities of the turbodrill.
A mathematical model of working process of the turbine, enabling a predictive assessment of the energy characteristics of the turbodrill, and to assess the influence of the manufacturing precision of vane systems on flow-through part of the energy quality of the turbine. The mathematical model allows to describe the workflow in the flow part, with varying degrees of detail, depending on the design stage. The proposed method of modeling allows us to assess the impact of deviations of angles of the vane systems taking place at their manufacturing energy characteristic of the turbine and to investigate the influence of scatter of actual geometrical parameters of a flowing part on the energy quality of the turbodrill. Analysis of the data shows a significant change in the coefficient of the theoretical intensity and, as a consequence, the efficiency of the turbodrill with a small change in output angle of a blade system of the impeller. The results confirm a significant influence of the deviation of the output angle of a blade system of the impeller on the energy qualities of the turbodrill. In the assembly of the turbodrill should be a selection of impellers for the specified geometric parameter that will improve the energy qualities of the turbodrill.
Опис
Ключові слова
энергетическая характеристика, математическая модель, проточная часть, пространственная решетка, mathematical model, flow part, spatial lattice
Бібліографічний опис
Мараховский М. Б. Повышение энергетических качеств турбобура / М. Б. Мараховский, А. И. Гасюк, М. М. Кузнецова // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Гидравлические машины и гидроагрегаты = Bulletin of National Technical Unversity "KhPI" : coll. of sci. papers. Ser. : Hydraulic machines and hydrounits. – Харьков : НТУ "ХПИ". – 2015. – № 45 (1154). – С. 68-71.