Assessment of Reynolds stress components and turbulent pressure loss using 4D flow MRI with extended motion encoding.
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ABSTRACT:
SUBMITTER: Haraldsson H
PROVIDER: S-EPMC5927556 | biostudies-literature | 2018 Apr
REPOSITORIES: biostudies-literature
Publications
Assessment of Reynolds stress components and turbulent pressure loss using 4D flow MRI with extended motion encoding.
Haraldsson Henrik H Kefayati Sarah S Ahn Sinyeob S Dyverfeldt Petter P Lantz Jonas J Karlsson Matts M Laub Gerhard G Ebbers Tino T Saloner David D
Magnetic resonance in medicine 20170726 4
<h4>Purpose</h4>To measure the Reynolds stress tensor using 4D flow MRI, and to evaluate its contribution to computed pressure maps.<h4>Methods</h4>A method to assess both velocity and Reynolds stress using 4D flow MRI is presented and evaluated. The Reynolds stress is compared by cross-sectional integrals of the Reynolds stress invariants. Pressure maps are computed using the pressure Poisson equation-both including and neglecting the Reynolds stress.<h4>Result</h4>Good agreement is seen for Re ...[more]
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