Dr Efstathios Kaliviotis
Telephone: +44 020 7848 2799
Research Group: Experimental & Computational Laboratory for the Analysis of Turbulence
Dr Efstathios Kaliviotis is a mechanical engineering lecturer in the Division of Engineering. He has a first class MEng degree in Computer Aided Mechanical Engineering, and a PhD in Bio-Fluid Mechanics, obtained from King’s College London in 2005 and 2009 respectively. His PhD studies were supported by the Leverhulme Trust (award F/07 040/X) and he was a Research Associate in the Division of Engineering in 2009. He is a member of the advisory committee and UK representative for the European Society for Clinical Hemorheology and Microcirculation and an associate member of the Institution of Mechanical Engineers and the British Society of Rheology. He is also a Honorary Senior Research Associate in the Department of Mechanical Engineering at University College, London and a member of the Technical Chamber of Greece.
Dr Kaliviotis is interested in Blood Rheology and Haemodynamics, which he is investigating with modelling and experimental methods. His modelling work involves the application of viscoelastic theory for the development of time-, structure- and flow-dependent constitutive equation for blood, and its implementation in micro- and macro- scale blood flow problems. His experimental work involves two main aspects; (a) the examination of blood viscosity in relation to the fluid’s microstructure and (b) the investigation of the effect of various parameters, such as erythrocyte aggregation, plasma and cell characteristics on blood flow in the micro-scale. This is possible by examining the micro-structure of the fluid with microscopy and image analysis techniques, and measuring the mechanical properties of blood via rheometric techniques. Concerning , the second main aspect of the experimental research, the fluid mechanics (velocity and deformation rate fields) of blood flowing in various micro-configurations (e.g. plate-plate, T junction micro-channels) are examined in relation to its local microstructural characteristics (local aggregation and network formation).
Hanson B., Cox B., Kaliviotis E. and Smith C.H. (2011). Effects of saliva on starch-thickened drinks with acidic and neutral pH. Dysphagia (DOI: 10.1007/s00455-011-9386-5).
Kaliviotis E. and Yianneskis M. (2011). Blood viscosity modelling: Influence of aggregate network dynamics under transient conditions. Biorheology, 48, pp. 127-147.
Kaliviotis E., Dusting J. and Balabani S. (2011). Spatial variation of blood viscosity: Modelling using shear fields measured by a μPIV based technique. Medical Engineering and Physics, 33, pp. 824-831.
Kaliviotis E., Ivanov I., Antonova N. and Yianneskis M. (2010). Erythrocyte aggregation at non-steady flow conditions: A comparison of characteristics measured with electrorheology and image analysis. Clinical Hemorheology and Microcirculation, 44, pp. 43-54.
Dusting J., Kaliviotis E., Balabani S. and Yianneskis M. (2009). Coupled human erythrocyte velocity field and aggregation measurements at physiological haematocrit levels. J. Biomechanics, 42, pp. 1438-1443.
Kaliviotis E. and Yianneskis M. (2009). An energy-rate based blood viscosity model incorporating aggregate network dynamics. Biorheology, 46, pp. 639-649.
Kaliviotis E. and Yianneskis M. (2008b). Fast response characteristics of red blood cell aggregation. Biorheology, 45, pp. 639-649.
Kaliviotis E. and Yianneskis M. (2008a). On the effect of microstructural changes of blood on energy dissipation in Couette flow. Clinical Hemorheology and Microcirculation, 39, pp. 235-242.
Kaliviotis E. and Yianneskis M. (2007). On the effect of dynamic flow conditions on blood microstructure investigated with optical shearing microscopy and rheometry. Journal of Engineering in Medicine, 221, pp. 887-897.