PHASE SHIFT INTERFEROMETRY FOR ACCURATE TEMPERATURE MEASUREMENT AROUND A VAPOR BUBBLE

Authors: Stoica, Virgil; Stephan, Peter

Source: Experimental Heat Transfer, Volume 20, Number 3, July 2007 , pp. 261-275(15)

Buy & download fulltext article:

Price: $56.94 plus tax (Refund Policy)

Abstract:

An interferometric measurement technique for determining accurately the temperature field around an axial symmetric vapor bubble that might be used for boiling investigations was developed. The specific setup of optical components and the fluid test cell for the generation of a single vapor bubble are described. The procedure and main steps to derive an accurate temperature field from the recorded interferograms are explained in detail. These are: wrapped phase calculation based on a four frames algorithm, phase unwrapping using Itoh algorithm, and Abe inversion for the calculation of the local temperatures. The results from interferometry are verified by point wise measurements using micro-thermocouples. Compared to formerly applied measurement techniques the presented phase shift interferometry leads to higher accuracy and higher spatial resolution.

Keywords: interferometry; temperature measurement; boiling

Document Type: Research article

DOI: http://dx.doi.org/10.1080/08916150701229881

Affiliations: 1: Darmstadt University of Technology, Chair of Technical Thermodynamics, Darmstadt, Germany

Publication date: 2007-07-01

More about this publication?