کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
657814 1458065 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Inverse estimate of heat flux on a plasma discharge tube to steady-state conditions using thermocouple data and a radiation boundary condition
ترجمه فارسی عنوان
برآورد معکوس شار حرارتی بر روی یک لوله تخلیه پلاسما به شرایط حالت وضعیت با استفاده از داده های ترموکوپل و شرایط مرزی تابش
کلمات کلیدی
مشکل معکوس تنظیم مقدمه، شار حرارتی، نیروی الکتریکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

The heat flux incident upon the inner surface of a plasma discharge tube during a helicon plasma discharge was estimated using an inverse method. Temperature readings were taken from the outer surface of the tube using thermocouples, and the temperature data were interpolated over the tube surface. A numerical inverse procedure based on the Alifanov iterative regularisation method was used to reconstruct the heat flux on the tube inner surface as a function of space and time. In contrast to previously-used inverse models for this application, the current model implements a thermal radiation boundary condition to realistically model the energy exchange in the device. Additionally in these experiments, steady-state operation was reached, and the accurate modelling of the steady-state condition was facilitated by the thermal radiation boundary condition. The variation of heat flux with helicon discharge power, propellant flowrate, and electromagnet current was studied, and it was found that the waste heat flux increased with applied RF power and propellant flowrate, and decreased with current supplied to the electromagnets, over the range of parameter variation tested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 77, October 2014, Pages 564–576
نویسندگان
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