A review on thin film fast response heat transfer gauges

Abstract

In this paper, an effort has been made to compile various research investigations done so far on fast response gauges for the short duration measurement in the transient state. The review paper is not only about summarization of all-important research work; rather, a detailed review on the development of the fast response gauges, its application, and various methods of heat estimation from the measured transient temperature history is also presented. Before discussing the development of fast response gauges, various heat flux measurement techniques and newer trends in heat transfer gauges are presented. The focus of this Review is mainly on the thin-film gauge, a robust fast response temperature detector best suited for the short duration measurement. The literature on the application of thin-film gauges for various engineering systems such as turbomachinery and aerodynamic heating systems is broadly categorized as single-layered and multi-layered gauges. The applications for the internal combustion engine and low heat flux measurement are also discussed later. The summary tables with studies arranged in chronological order are also provided. Finally, the estimation of the heat transfer rate from the measured transient temperature data is presented.

Heat-Transfer Gauge Arrays for Identifying Spot Initiation in Hypersonic Transitional Boundary Layers

“…Thin-film heat-transfer gauges (TFHTG) have been used for measurement of heat transfer to the surfaces of models in various types of facilities for many years; see reviews by Schultz and Jones [12] and Alam and Kumar [13]. They are particularly suitable for hypersonic impulse facilities that have a very short flow establishment time and a short flow duration and can be designed to have response times of the order of microseconds.…”

Измерение Нестационарного Теплового Потока В Экспериментах На Ударных Трубах С Помощью Датчиков На Основе Анизотропных Термоэлементов Из Висмута

“…Наибольшее распространение получили датчики, основанные на температурной зависимости электрического сопротивления чувствительного элемента и термоэлектрические датчики на основе эффекта Зеебека. К первому типу относятся тонкопленочные датчики сопротивления [7], а ко второму коаксиальные термопары [8], датчики на основе тонкой анизотропной пленки из высокотемпературных сверхпроводников [9,10] и хрома [11], а также датчики на основе анизотропных термоэлементов из висмута и слоистых металлических структур [12,13]. До недавнего времени основным средством измерения являлись тонкопленочные датчики сопротив-ления.…”

Non-stationary heat flux measurement in shock tube experiments using sensors based on anisotropic bismuth thermoelements

“…The most widespread are sensors based on the temperature dependence of the electrical resistance of the sensitive element and thermoelectric sensors based on the Seebeck effect. The first type includes thin-film resistance sensors [7], and the second type includes coaxial thermocouples [8], sensors based on a thin anisotropic film of high-temperature superconductors [9,10] and chromium [11], as well as sensors based on anisotropic bismuth thermoelements and layered metal structures [12,13]. Until recently, thin-film resistance sensors were the main means of measurement.…”