scholarly journals Hyporheic flow and dissolved oxygen distribution in fish nests: The effects of open channel velocity, permeability patterns, and groundwater upwelling

2016 ◽  
Vol 121 (12) ◽  
pp. 3113-3130 ◽  
Author(s):  
M. Bayani Cardenas ◽  
Aimee E. Ford ◽  
Matthew H. Kaufman ◽  
Adam J. Kessler ◽  
Perran L. M. Cook
Keyword(s):  
Dissolved Oxygen ◽  
Open Channel ◽  
Oxygen Distribution ◽  
Hyporheic Flow ◽  
Channel Velocity

scholarly journals GP approach for critical submergence of intakes in open channel flows

2012 ◽  
Vol 14 (4) ◽  
pp. 937-943 ◽  
Author(s):  
H. Md. Azamathulla ◽  
Z. Ahmad
Keyword(s):  
Reynolds Number ◽  
Weber Number ◽  
Open Channel ◽  
Laboratory Data ◽  
Open Channel Flow ◽  
Flow Conditions ◽  
Open Channel Flows ◽  
Wide Range ◽  
Channel Velocity ◽  
Critical Submergence

This technical paper presents the genetic programming (GP) approach to predict the critical submergence for horizontal intakes in open channel flow for different bottom clearances. Laboratory data from the literature for the critical submergence for a wide range of flow conditions were used for the development and testing of the proposed method. Froude number, Reynolds number, Weber number and ratio of intake velocity and channel velocity were considered dominant parameters affecting the critical submergence. The proposed GP approach produced satisfactory results compared to the existing predictors.

scholarly journals Numerical Solution of a 3-D Advection-Dispersion Model for Dissolved Oxygen Distribution in Facultative Ponds

2018 ◽  
Vol 31 ◽  
pp. 03006 ◽  
Author(s):  
Sunarsih ◽  
Dwi P. Sasongko ◽  
Sutrisno
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Dispersion Model ◽  
Oxygen Distribution ◽  
Dissolved Oxygen Concentration ◽  
3 Dimensional ◽  
Advection Dispersion ◽  
Advection Diffusion Equation ◽  
Advection Diffusion ◽  
The Finite Difference Method

This paper describes a mathematical model for the dissolved oxygen distribution in the plane of a facultative pond with a certain depth. The purpose of this paper is to determine the variation of dissolved oxygen concentration in facultative ponds. The 3-dimensional advection-diffusion equation is solved using the finite difference method Forward Time Central Space (FTCS). Numerical results show that the aerator greatly affects the occurrence of oxygen concentration variations in the facultative pond in the certain depth. The concentration of dissolved oxygen decreases as the depth of the pond increases.

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