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X. Yun Xu
Researcher at Imperial College London
Publications - 22
Citations - 1232
X. Yun Xu is an academic researcher from Imperial College London. The author has contributed to research in topics: Pulsatile flow & Shear stress. The author has an hindex of 18, co-authored 22 publications receiving 1153 citations.
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Journal ArticleDOI
MRI and CFD studies of pulsatile flow in healthy and stenosed carotid bifurcation models
TL;DR: Pulsatile flow was studied in physiologically realistic models of a normal and a moderately stenosed (30% diameter reduction) human carotid bifurcation to derive wall shear stress vectors and compare qualitatively with the corresponding CFD predictions.
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MRI measurement of time-resolved wall shear stress vectors in a carotid bifurcation model, and comparison with CFD predictions.
Panorea Papathanasopoulou,Shunzhi Zhao,Uwe Köhler,Malcolm B. Robertson,Quan Long,Peter R. Hoskins,X. Yun Xu,Ian Marshall +7 more
TL;DR: To study pulsatile fluid flow in a physiologically realistic model of the human carotid bifurcation, and to derive wall shear stress (WSS) vectors.
Journal ArticleDOI
Fluid-structure interaction analysis of a patient-specific right coronary artery with physiological velocity and pressure waveforms
Ryo Torii,Nigel B. Wood,Nearchos Hadjiloizou,Andrew W. Dowsey,A Wright,Alun D. Hughes,Justin E. Davies,Darrel P. Francis,Jamil Mayet,Guang-Zhong Yang,Simon A. McG. Thom,X. Yun Xu +11 more
TL;DR: In this article, a 3D model of a stenosed RCA was reconstructed based on multislice computerized tomography images, and the arterial wall was modeled as a Mooney-Rivlin hyperelastic material.
Journal ArticleDOI
Fluid-wall modelling of mass transfer in an axisymmetric stenosis: effects of shear-dependent transport properties.
TL;DR: The results showed elevated LDL concentration and reduced oxygen concentration in the subendothelial layer of the arterial wall in areas where WSS is low, suggesting that low WSS might be responsible for lipid accumulation and hypoxia in the arterials wall.
Journal ArticleDOI
MRI measurement of wall shear stress vectors in bifurcation models and comparison with CFD predictions
Uwe Köhler,Ian Marshall,Ian Marshall,Malcolm B. Robertson,Quan Long,X. Yun Xu,Peter R. Hoskins +6 more
TL;DR: The quality of the MRI measurements was sufficient for reliable calculation of WSS vectors when a sensitive surface coil was used, and the combination of MRI and CFD would seem to be a powerful technique for the investigation of flow phenomena.