The paper deals with a numerical simulation of the natural convection air flow and its influence on ap- parent mass in high precision mass measurements. Results are in reasonable agreement with the expe- rimental values obtained on a 1-kg silicon sphere and a 1-kg mass standard. There is clear evidence that the three-dimensional finite element model studied, allowing inclusions of the boundary and initial conditions determined experimentally, captures the most important features of convection and estimates the relevant corrections.
Convective forces in high precision mass measurements
2002
Abstract
The paper deals with a numerical simulation of the natural convection air flow and its influence on ap- parent mass in high precision mass measurements. Results are in reasonable agreement with the expe- rimental values obtained on a 1-kg silicon sphere and a 1-kg mass standard. There is clear evidence that the three-dimensional finite element model studied, allowing inclusions of the boundary and initial conditions determined experimentally, captures the most important features of convection and estimates the relevant corrections.File in questo prodotto:
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