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| Titel: |
Swimming of spermatozoa in a linear viscoelastic fluid |
| Auteur: |
Glenn R. Fulford David F. Katz Robert L. Powell |
| Verschenen in: |
Biorheology |
| Paginering: | Jaargang 35 (2001) nr. 4-5 pagina's 295-309 |
| Jaar: |
2001-04-01 |
| Inhoud: |
A modified resistive force theory is developed for a spermatozoon swimming in a general linear viscoelastic fluid. The theory is based on a Fourier decomposition of the flagellar velocity, which leads to solving the Stokes flow equations with a complex viscosity. We use a model spermatozoon with a spherical head which propagates small amplitude sinusoidal waves along its flagellum. Results are obtained for the velocity of propulsion and the rate of working for a free swimming spermatozoon and the thrust on a fixed spermatozoon. There is no change in propulsive velocity for a viscoelastic fluid compared to a Newtonian fluid. The rate of working does change however, decreasing with increasing elasticity of the fluid, for a Maxwell fluid. Thus the theory predicts that a spermatozoon can swim faster in a Maxwell fluid with the same expenditure of energy for a Newtonian fluid. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 12 van 14 gevonden artikelen
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