TITLE

Tomographic reconstruction of incompressible flow

AUTHOR(S)
Nemirovsky, Jonathan; Lifshitz, Asaf; Be'ery, Ilan
PUB. DATE
May 2011
SOURCE
Review of Scientific Instruments;May2011, Vol. 82 Issue 5, p055115
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In many experiments facilitating tomography the reconstruction problem is under-determined, meaning there are many possible solutions consistent with the measurements. If the sampling rate is fast relative to the typical evolution time, the known physical dynamics of the system can be used as additional reconstruction constraints. Here we demonstrate that incorporating the requirement of incompressible flow can improve significantly the fidelity of the reconstructed sequence. The incompressibility of the reconstruction is assured by requiring the conservation of the density moments. It is demonstrated that the 'incompressible' reconstruction can be significantly more accurate than the reconstruction using standard methods. A consequence of the density moments' conservation is the conservation of the density histogram throughout the reconstructed sequence.
ACCESSION #
62010753

 

Related Articles

  • A generalized, periodic nonlinearity-reduced interferometer for straightness measurements. Wu, Chien-ming // Review of Scientific Instruments;Jun2008, Vol. 79 Issue 6, p065101 

    Periodic nonlinearity is a systematic error limiting the accuracy of displacement measurements at the nanometer level. However, an interferometer with a displacement measurement accuracy of less than 1 nm is required in nanometrology and in fundamental scientific research. To meet this...

  • Introducing measurement uncertainty into methods of calibrating and checking measuring instruments. A. Chunovkina // Measurement Techniques;Mar2008, Vol. 51 Issue 3, p341 

    Abstract  The letter discusses certain aspects of introducing the Guide to the Expression of Uncertainty in Measurement, and the draft of Supplement 1 to this Guide for evaluating calibration results.

  • Raman microscope.  // Spectroscopy;May2006, Vol. 21 Issue 5, p56 

    The article features Raman microscope from Renishaw Inc. This product has additional confocal laser scanning microscopy (CLS) capabilities. CLS microscope is made for the combination of the imaging, resolution, contrast and optical sectioning capabilities of CLS microscopy having the...

  • Absolute calibration of nuclear activation diagnostics for intense pulsed ion beams. Young, F.C.; Boller, J.R.; Stephanakis, S.J. // Review of Scientific Instruments;Jun96, Vol. 67 Issue 6, p2182 

    Describes absolute calibration of an annihilation-radiation sodium iodide (NaI) coincidence detection system for short-lived ion-induced radioactivity. Incident proton intensity; Comparison of absolute fluences of pulsed proton beams with ion beam fluences measured by carbon calorimetry.

  • Eliminating the broadening by finite aperture in Brillouin spectroscopy. Vialla, R.; Rufflé, B.; Guimbretière, G.; Vacher, R. // Review of Scientific Instruments;Nov2011, Vol. 82 Issue 11, p113110 

    We present a new optical arrangement which allows to avoid the broadening by finite aperture in Brillouin spectroscopy. In this system, all the rays scattered at the same angle by the whole scattering volume are collected on a single pixel of the area detector. This allows to use large...

  • Indeterminateness of the results of calibrating measuring instruments in the narrow and the broad sense. S. Levin // Measurement Techniques;Sep2007, Vol. 50 Issue 9, p921 

    Abstract  The use of the Handbook on the Expression of Indeterminateness in Measurements in the solution of measurement problems involved in calibration of measuring instruments.

  • The Wave Complex of the СПРУТ-VI Instrument Package. Klimov, S. I.; Korepanov, V. E.; Yukhnevich, Yu.; Afanasenko, M. P.; Grushin, V. A.; Dobrovol'skii, I. A.; Grachev, E. A.; Grigoryan, O. R.; Marusenkov, A. A. // Instruments & Experimental Techniques;Jan/Feb2004, Vol. 47 Issue 1, p109 

    The wave complex of the СПРУТ-VI instrument package was designed for monitoring the electromagnetic state around orbital stations. The method of combined wave probes enables simultaneous vector measurements of magnetic field fluctuations (in a frequency range from 0.1 Hz to 40...

  • First results from the modular multi-channel dispersion interferometer at the TEXTOR tokamak. Dreier, H.; Bagryansky, P.; Baumgarten, N.; Biel, W.; Lambertz, H. T.; Lehnen, M.; Lizunov, A.; Solomakhin, A. // Review of Scientific Instruments;Jun2011, Vol. 82 Issue 6, p063509 

    At the TEXTOR tokamak in Jülich, Germany, a modular dispersion interferometer was installed and operated for the first time. Equipped with four lines of sight, the line-integrated density could be measured in parallel at different major radii with a resolution of better than 3 × 1017 m-2....

  • Calibration of Measuring Instruments Under Working Conditions. Berzhinskaya, M.; Danilov, A.; Kucherenko, Yu.; Ordinartseva, N. // Measurement Techniques;Jun2014, Vol. 57 Issue 3, p228 

    A method of calibrating measuring instruments under working conditions that differ from the normal conditions created in a calibration laboratory is proposed. By means of the method, it is possible to take into account variations in the unit of a quantity that appear in calibration under working...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics