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Details van artikel 5 van 11 gevonden artikelen
| Titel: |
FLUID PROPERTY EVALUATION BY PIEZOELECTRIC CRYSTALS OPERATING IN THE THICKNESS SHEAR MODE |
| Auteur: |
Hager, Harold E. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 43 (1986) nr. 1-3 pagina's 25-38 |
| Jaar: |
1986-04-01 |
| Inhoud: |
Hydrodynamic coupling between a fluid and a planar piezoelectric crystal operating in the thickness shear mode provides a powerful, yet remarkably simple means to characterize fluid properties. Equations describing hydrodynamic coupling are developed for Newtonian fluids. This analysis takes into account, for the first time, the influence of a nonuniform piezoelectric crystal surface velocity. In particular, a Gaussian velocity distribution, suggested by other work, yields a functional relationship between hydrodynamic coupling and the fluid viscosity/density product that is in agreement with experiment. Beginning with these results, analytical methods for measuring individually the fluid visocity and density are described. Finally, it is demonstrated experimentally that the automatic gain control from the piezoelectric crystal oscillation circuit provides a ready means of fluid property characterization. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 11 gevonden artikelen
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