| Liquid dyeing by supercritical carbon dioxide (CO2) is a new dyeing technology, thereare several advantages such as no additive, shorter dyeing time and technical flow, recyclabledyeing mediums, no dyeing sewage and reclaiming unattached dyestuff. However, as a newprinting and dyeing technology, there are some difficulties which are not figure out. Forexample, there is no perfect multiphase flow mathematical model for supercritical CO2liquiddyeing as well as a particular transmission investigation for supercritical multiphase flowmatter.In this paper, numerical analog technology combined with engineering experience areused for the problem existed. Four parts in this paper are as follows:First of all, propose supercritical CO2liquid dyeing multiphase flow theoretical modelwith the basis of theoretical analysis, establish a mathematical model for system analysis bycontinuous equation, energy equation and momentum equation.Secondly, by use of the software Pro/E, have built the entity modeling and finished thedevice visual design for the important parts of supercritical CO2liquid dyeing equipment.Thirdly, have finished static stress analyzing and defined stress centralized areas for theimportant parts of supercritical CO2liquid dyeing equipment by structure analysis function ofANSYS.In the end, make use of FLOTRAN CFD module of ANSYS, have completed themodeling, girding, loading and analyzing operation for the multiphase flow supercritical CO2liquid equipment’s liquid field. According to that, the pressure diagram and velocity vectordistributing figure of liquid passing through the equipment can be defined. All of these canprovide a reference for engineering design. |
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