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Dynamic Three-Dimensional Process Water Density Model for Ultrasim.

DE2001781034

Publication Date	2001
Personal Author	Aviles, B. N.
Page Count	26
Abstract	A temperature dependent D2O density model has been developed for the 3-D hydraulics module in the near real-time plant analysis code ULTRASIM. By replacing the constant density, ULTRASIM is improved in two ways. First, all 3-D hydraulic analyses performed are more physically realistic now that the temperature dependence of the D2O density is accounted for. Secondly, simple temperature driven process water transients can now be modeled and investigated, including natural circulation tests. This report describes results in both of these areas.
Keywords	Hydraulics Natural convection Temperature dependence U codes Three-dimensional calculations Transients Heavy water Mathematical models Density
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Department of Energy, Aiken, SC. Savannah River Site.; Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200125
Contract Number	AC09-76SR00001

Dynamic Three-Dimensional Process Water Density Model for Ultrasim.

Dynamic Three-Dimensional Process Water Density Model for Ultrasim.
DE2001781034

Publication Date	2001
Personal Author	Aviles, B. N.
Page Count	26
Abstract	A temperature dependent D2O density model has been developed for the 3-D hydraulics module in the near real-time plant analysis code ULTRASIM. By replacing the constant density, ULTRASIM is improved in two ways. First, all 3-D hydraulic analyses performed are more physically realistic now that the temperature dependence of the D2O density is accounted for. Secondly, simple temperature driven process water transients can now be modeled and investigated, including natural circulation tests. This report describes results in both of these areas.
Keywords	Hydraulics Natural convection Temperature dependence U codes Three-dimensional calculations Transients Heavy water Mathematical models Density
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Department of Energy, Aiken, SC. Savannah River Site.; Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200125
Contract Number	AC09-76SR00001