On the pulsating flow behavior of a biological fluid: human blood
| Autor: | Mariano Pérez-Camacho, Fausto Calderas, Leonardo Moreno, Octavio Manero, E. E. Herrera-Valencia, Luis Medina-Torres |
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| Rok vydání: | 2017 |
| Předmět: |
Work (thermodynamics)
010304 chemical physics Human blood Chemistry Quantitative Biology::Tissues and Organs Physics::Medical Physics Constitutive equation Thermodynamics Mechanics Condensed Matter Physics 01 natural sciences Quantitative Biology::Cell Behavior 010305 fluids & plasmas Rheology Flow (mathematics) 0103 physical sciences General Materials Science Tube (fluid conveyance) Pressure gradient Complex fluid |
| Zdroj: | Rheologica Acta. 56:387-407 |
| ISSN: | 1435-1528 0035-4511 |
| DOI: | 10.1007/s00397-017-0994-3 |
| Popis: | In this work, the rectilinear flow of a complex fluid (human blood) under a pulsating time-dependent pressure gradient is analyzed. A first approximation of the real case of blood flowing in a vein is described. The normalized pressure gradient simulates the pumping work of the heart while the flow geometry (circular tube) is assumed rigid, smooth, and cylindrical. The rheological behavior of blood with different cholesterol levels is modeled using the Bautista–Manero–Puig (BMP) constitutive equation. According to the analytical solution, a flow enhancement is predicted to first order which represents the optimum pumping work of the heart which governs the flow of blood in the entire body. This work is a contribution to the understanding of the complex rheology involved in the discontinuous pressure-driven flow of blood in the human body. |
| Databáze: | OpenAIRE |
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