Data outlier detection algorithm based on density difference of double radius;

To ensure water quality and improve the quality of sewage treatment process efficiency, in this paper, rectangular secondary settling tanks are further researched by numerical simulation to aim at the assumption that currently the majority numerical simulation on secondary sedimentation tank are based on ignoring the impact of the water density difference and the cunent si.

In order to simulate the flow in the rectangular secondary setting tanks with the density difference,the mixture model of two-phase flow and RNG k-ε two-equation turbulence model are selected to carry out the numerical simulation of the rectangular secondary settling tanks.

Structural patterns and density differences are salient characteristics of drainages,which should be maintained in generalized versions.

A new rule of ordering river entities based on counting the amount of their tributaries is proposed,which indicated the density differences of river entities among different areas.

By recording the density data in compact period and mobility period and the jigging ampli- tude of the jig bed,the correlative relation between the mobility and density differences in the compact period and the mobility period was analyzed.

The liquid density difference and relative Rayleigh number at different temperatures and different cooling rates were calculated.

Secondly,it defines the differential density by the difference between two densities of the Biot medium under open-pore and close-pore conditions,and these densities are derived from the kinetic energy equations.