An experimental and computational investigation of electrostatic fields in plastic tanks during filling with low conductivity fuel

Lees, Peter S.J.; McAllister, D.; Smith, John R. Lindsay; Britton, Laurence G.; Hughes, John F.

doi:10.1016/0304-3886(81)90054-1

Cited by 10 publications

(2 citation statements)

References 3 publications

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“…For the calculation of electrostatic potentials in the gas space and oil space in the tank, the Laplace equation and the Poisson equation are considered , respectively:

({, \begin{array}{l} \nabla^{2} U_{g} = 0 \\ \nabla^{2} U_{l} = - \frac{ρ_{boldc}}{ε_{0} ε_{l}} \end{array})

where U g and U l are the electrostatic potentials in the gas space and oil space (V), respectively; ρ c is the electrostatic charge density (C/m 3 ); ε 0 is the permittivity of vacuum (F/m); ε l is the relative permittivity of the oil.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…The local electrostatic potentials in the gas space and oil space in tanks are related to the local electrostatic charge density by the Laplace and the Poisson equations . In most researches the solving of Poisson equation was based on the assumptions that the electrostatic charges were uniform distribution throughout the oil and the charge density kept constant during the filling process. However, these assumptions may not be accurate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Law of Distribution and Variation of Electrostatic Potential in Oil Tanks during Filling Process

Wang

Chen

Yan

et al. 2018

Process Safety Progress

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Electrostatic potential is a critical factor to evaluate the severity of electrostatic hazard during filling oil tanks. A novel model is proposed for calculating electrostatic potential in tanks during filling process. In the model, the nonuniform electrostatic charge distribution is solved by considering the diffusion, convection, conduction, and dissipation forces acting on the electrostatic charge. Additionally, an experiment was carried out for measuring electrostatic potential, and the maximum surface potential from the experiment coincided with that of calculation well. By applying the model, the distribution of electrostatic potential is explored, and the influences of relaxation time and some other factors on the electrostatic potential are analyzed. The results show that the peak value of the maximum surface potential calculated by the proposed model occurs much later in the filling than the existed model with the assumption of uniform electrostatic charge distribution. The relaxation time is a key factor to influence the electrostatic potential, and it also affects the filling fraction at which surface potential reaches the peak value. The maximum surface potential increases with the increase of the diffusion coefficient of the ion, the dynamic viscosity of the oil and the filling rate, respectively.

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“…For the calculation of electrostatic potentials in the gas space and oil space in the tank, the Laplace equation and the Poisson equation are considered , respectively: