Certificate of Registration Media number Эл #ФС77-53688 of 17 April 2013. ISSN 2308-6033. DOI 10.18698/2308-6033
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Analysis of errors in heat flow measurement when testing designs heated by radiation

Published: 22.10.2013

Authors: Tovstonog V.A., Borovkova T.V., Eliseev V.N.

Published in issue: #7(19)/2013

DOI: 10.18698/2308-6033-2013-7-851

Category: Engineering | Chapter: Rocket and space technology

The authors review contactless and contact methods of measurements of heat flow, show results of comparative analysis and state the benefits of contact methods based on the solution of inverse heat conduction problems. It is shown that the correctness of the results of the thermophysical experiment largely depends on the accuracy of the heat flux determination. The advantage of the methods based on the solution of inverse heat conduction problems is the ability to create small-sized sensors, structurally designed as elements of the system. This allows controlling the local values of the heat flow directly into the process of heating, and in practice in some cases it is sufficient to measure the change of the temperature in one of sensor's points. Results of research of an error of measurement of temperature of a sensitive element of the sensor intended for definition of a thermal stream at intensive radiation impact on heated object are given.