Call number:
ZSP-201-79/30
In:
CRREL Report, 79-30
Description / Table of Contents:
The ice suppression resulting from discharge of warm water into rivers during winter is analyzed with emphasis on two different cases. In Part 1 the case of a thermal effluent fully mixed across the flow section is analyzed to include the effects of unsteadiness in the effluent temperature and the meteorological variations. The location of the ice edge is determined either by a 0 C water temperature criterion or an equilibrium ice melting analysis. The choice of the applicable criterion emerges naturally from the analysis even though the location of the ice edge may be considerably different when a steady-state analysis is done. In Part 2 the case of a side discharge of heated effluent is analyzed, also in an unsteady manner, and the effects of transverse dispersion are included in the analysis. Comparisons are made in both Parts 1 and 2 to limited field data that are available.
Type of Medium:
Series available for loan
Pages:
iv, 23 Seiten
,
Illustrationen
Series Statement:
CRREL Report 79-30
Language:
English
Note:
CONTENTS
Abstract
Preface
Part I. Unsteady suppression of river ice by fully mixed thermal effluents
Introduction
Governing equations
Outline of analysis
Location of ice edge
Numerical simulation
Uncertainties and Imitations
Literature cited
Part II. Effect of transverse mixing on ice suppression
Introduction
Analysis of dispersion and heat loss
Analysis of ice thickening and melting
Numerical simulation
Example simulations
Field comparison
Uncertainties and limitations
Literature Cited
Appendix A: Computer program for unsteady fully mixed ice suppression
Appendix B: Computer program for unsteady lateral mixing ice suppression
Location:
AWI Archive
Branch Library:
AWI Library
