ISSN:0022-1686    

DOI:10.1080/00221686.1994.10750042

出版商:Taylor & Francis    

年代:1994

数据来源: Taylor

摘要:

A technique has been devised for Ihe location of fluid of a predetermined concentration. It is based on (he colour change of a pH sensitive dye which is present in both a host fluid and an introduced pollutant. The acid and base levels in both liquids are controlled to produce the colour change at a given dilution of the pollutant. The technique is demonstrated in the mixing produced by a fountain in a container. A turbulent jet of fresh water is directed downward into a tank of salt water, ll descends a short distance, stops and Hows upward surrounding the downward Mow like a drinking fountain. When the llow returns to the top of the container it spreads out to form a mixed layer, the bottom of which advances downward as a front. The continuously changing density flowing from the mixed layer produces the density profile which expands slowly to till the container. The pi I technique is used to track the location of a surface of specified concentration and density.

ISSN:0022-1686    

DOI:10.1080/00221686.1994.10750043

出版商:Taylor & Francis    

年代:1994

数据来源: Taylor

摘要:

The principles of seawater intrusion and purging of seawater out of deep tunnelled outfalls are well known. Purging using a relatively low sewage water discharge requires high hydraulic head loss, which conflicts with the requirement for minimum head loss in the diffuser to reduce energy consumption. The hydraulic modelling of purging processes for the Hong Kong outfall and diffuser system was performed in order to optimize the discharge and head loss requirements for purging. Special attention is paid to two different purging methods: two-layer purging and salt-assisted purging.

ISSN:0022-1686    

DOI:10.1080/00221686.1994.10750044

出版商:Taylor & Francis    

年代:1994

数据来源: Taylor

ISSN:0022-1686    

DOI:10.1080/1999.00405000.10750185

出版商:Taylor & Francis    

年代:1994

数据来源: Taylor

ISSN:0022-1686    

DOI:10.1080/1999.00405000.10750186

出版商:Taylor & Francis    

年代:1994

数据来源: Taylor