Modelling Reaeration Phenomenon In River Using Dimensionless Approach

ANURADHA, PANDEY and RAM PAL, SINGH (2017) Modelling Reaeration Phenomenon In River Using Dimensionless Approach. In: Seventh International Conference On Advances in Civil and Structural Engineering - CSE 2017, 01-02 July, 2017, Kuala Lumpur, Malaysia.

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This communication presents a methodology to evaluate the re-aeration rate term in basic dissolved oxygen (DO) deficit models by including some important parameters influencing re-aeration phenomenon in river like turbulence, width, depth and length of streams, which are necessary for fast biochemical oxygen demand (BOD) assimilation in streams. A mathematical model using dimensional approach for rate of re-aeration as well as DO deficits, using basic philosophy of Bhargava (1986) model, is presented. The simulation of data on river Ganges in India, indicate that the predictions of DO deficits are in close agreement with the experimentally observed values. The methodology presented in this paper accounts for all the important factors affecting re-aeration in streams and thus, may offer an alternative to traditionally used approaches for representing re-aeration rate in rivers/streams.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Dissolved oxygen; BOD assimilation; DO deficit; Critical time; Re-aeration coefficient; River Ganges.
Depositing User: Mr. John Steve
Date Deposited: 11 Mar 2019 11:30
Last Modified: 11 Mar 2019 11:30

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