منابع مشابه
Temperature Measurement
Temperature is a principle parameter that needs to be monitored and controlled in most food processing operations such as heating, cooling, drying and storage. Temperature sensors have been developed based on different temperature-dependent physical phenomena including thermal expansion, thermoelectricity, electrical resistance, and thermal radiation. Temperature sensors used in agricultural an...
متن کاملCARS Temperature and Species Measurements For Air Vehicle Propulsion Systems
The coherent anti-Stokes Raman spectroscopy (CARS) method has recently been used in the United States and Europe to probe several different types of propulsion systems for air vehicles. At NASA Langley Research Center in the United States, CARS has been used to simultaneously measure temperature and the mole fractions of N2, O2 and H2 in a supersonic combustor, representative of a scramjet engi...
متن کاملPressure, Temperature, and Density Measurements Using High-resolution N2 Cars
* Graduate Research Assistant. Student Member AIAA. † Professor. Senior Member AIAA. ‡ W. Grafton and Lillian B. Wilkins Professor. Associate Fellow AIAA. ABSTRACT Mean pressure, temperature, and density measurements have been made in a gas cell and along the centerline of an underexpanded jet using highresolution N2 CARS. This method takes advantage of the line-broadening effects and populatio...
متن کاملHedonic Methods of Price Measurement for Used Cars
A hedonic technique for calculating the consumer price index for second-hand cars was introduced in May 2003. The hedonic technique adjusts for quality by using regression analysis to measure the impact of product features on sale price. In this manner price changes that are due to quality shifts in specific features can be separated mathematically from “pure” price changes and purged. The foll...
متن کاملThermometry (temperature measurement)
Thermometry ................................................................................................................................................. 1 Applications .............................................................................................................................................. 1 Temperature metrology ............................................................
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ژورنال
عنوان ژورنال: JOURNAL OF THE FLOW VISUALIZATION SOCIETY OF JAPAN
سال: 1987
ISSN: 1884-0361,0287-3605
DOI: 10.3154/jvs1981.7.34