Проведено расчётное исследование температурного распределения и теплопереноса (ТП) в противотуманной автомобильной фаре и получено решение, не зависящее от размеров сетки. Полученные результаты сопоставлены с литературными данными и подтверждены экспериментально. Измерения проводились при 24 °С в пяти точках с помощью термопар. Продолжительность испытаний составляла 2 ч. Для термического анализа использовалась программа «ANSYS CFX 12.1». Воздушный поток внутри противотуманной фары считался установившимся, несжимаемым, ламинарным и трёхмерным. Учитывались изменения теплофизических характеристик, гидростатический эффект и излучение. Излучение ‒ важный вид теплопереноса, который следует учитывать при расчёте распределения температуры линз автомобильных осветительных приборов. При неправильном выборе материалов излучение может оказывать негативное воздействие на линзы. Несмотря на сложность геометрии лампы и неизотермичность её поверхности, общие гидродинамические и теплофизические параметры от этого не зависят. 1. Derlofske, J.V., Bullough. JD., Gribbin, C. Comfort and visibility characteristics of spectrally tuned high intensity discharge forward lighting systems//European Journal of Scientific Research.– 2007. – Vol. 17, No. 1. – P. 73–84.
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• Предыдущая статья
• Следующая статья

• осветительные приборы автомобилей
• фара
• ламинарная естественная конвекция
• излучение
• сопряжённый анализ
• вычислительная гидродинамика