scholarly journals Thermal hydraulic simulation of a channel with targets for production of selenium-75 isotope

2020 ◽  
Author(s):  
D. N. Litvinov ◽  
V. S. Kostarev ◽  
O. L. Tashlykov ◽  
V. A. Klimova ◽  
N. M. Aristov ◽  
...  
Keyword(s):  
Hydraulic Simulation ◽  
Selenium 75

The Role of Computer Modeling in Combined Sewer Overflow Abatement Planning

1992 ◽  
Vol 26 (7-8) ◽  
pp. 1831-1840 ◽  
Author(s):  
L. A. Roesner ◽  
E. H. Burgess
Keyword(s):  
System Modeling ◽  
Cost Effective ◽  
Combined Sewer Overflows ◽  
Sewer System ◽  
New Techniques ◽  
Hydraulic Simulation ◽  
Continuous Simulation ◽  
Combined Sewer ◽  
The U.S

Increased concern regarding water quality impacts from combined sewer overflows (CSOs) in the U.S. and elsewhere has emphasized the role of computermodeling in analyzing CSO impacts and in planning abatement measures. These measures often involve the construction of very large and costly facilities, and computer simulation during plan development is essential to cost-effective facility sizing. An effective approach to CSO system modeling focuses on detailed hydraulic simulation of the interceptor sewers in conjunction with continuous simulation of the combined sewer system to characterize CSOs and explore storage-treatment tradeoffs in planning abatement facilities. Recent advances in microcomputer hardware and software have made possible a number of new techniques which facilitate the use of computer models in CSO abatement planning.

A storage model for the simulation of the hydraulic behaviour of drainage networks

1997 ◽  
Vol 36 (8-9) ◽  
pp. 57-63 ◽  
Author(s):  
Homayoun Motiee ◽  
Bernard Chocat ◽  
Olivier Blanpain
Keyword(s):  
Wave Model ◽  
Kinematic Wave ◽  
Hydraulic Simulation ◽  
Diffusion Wave ◽  
Storage Model ◽  
Hydraulic Behaviour ◽  
Drainage Networks ◽  
Saint Venant Equations ◽  
Kinematic Wave Model ◽  
And Diffusion

This paper presents a model for the hydraulic simulation of a drainage network using the storage concept. This model is easier to use than the complete Barre de Saint Venant equations and gives better results than the usual conceptual models, i.e. the Muskingum model, or than models obtained by the simplification of the Saint Venant equations (kinematic wave model and diffusion wave model).

Selenium-75: A potential source for use in high-activity brachytherapy irradiators

1986 ◽  
Vol 13 (5) ◽  
pp. 728-731 ◽  
Author(s):  
K. J. Weeks ◽  
R. J. Schulz
Keyword(s):  
High Activity ◽  
Potential Source ◽  
Selenium 75

Design of Control System for Hydraulically Vibrated Processing Tomato Fruit Seedling Separation Device

2014 ◽  
Vol 651-653 ◽  
pp. 693-696
Author(s):  
Li Hong Wang ◽  
Rong Qing Liang ◽  
Cheng Song Li ◽  
Za Kan ◽  
Jin Wei Qin
Keyword(s):  
Tomato Fruit ◽  
Simulation Software ◽  
Signal Frequency ◽  
System Control ◽  
Frequency Range ◽  
Hydraulic Simulation ◽  
Separation Device ◽  
Processing Tomato ◽  
Input Signal Frequency ◽  
Set Up

Eccentric style processing tomato fruit seeding separation device exist high machining and assembly precision or other issues. In order to solve this problem, the mode of vibration of hydraulic replaced the eccentric style to drive the fruit seedling separation roller to separate processing tomato effectively. To facilitate adjustment of the hydraulic system, a kind of control circuit PLC as the core was designed according to the actual production requirements. PLC and other elements were selected. The system control signal frequency was initially set up as 1~5 HZ, within the frequency range hydraulic simulation software was used to simulate and analyze the hydraulic vibration system. The result shows that the system rams steady when the input signal frequency range was 1~5HZ.

scholarly journals Development of flood probability charts for urban drainage network in coastal areas through a simplified joint assessment approach

2011 ◽  
Vol 15 (10) ◽  
pp. 3115-3122 ◽  
Author(s):  
R. Archetti ◽  
A. Bolognesi ◽  
A. Casadio ◽  
M. Maglionico
Keyword(s):  
Sea Level ◽  
Drainage System ◽  
Coastal Areas ◽  
Operating Conditions ◽  
Threshold Condition ◽  
Urban Drainage ◽  
Climate Variables ◽  
Storm Events ◽  
Hydraulic Simulation ◽  
Sea Levels

Abstract. The operating conditions of urban drainage networks during storm events depend on the hydraulic conveying capacity of conduits and also on downstream boundary conditions. This is particularly true in coastal areas where the level of the receiving water body is directly or indirectly affected by tidal or wave effects. In such cases, not just different rainfall conditions (varying intensity and duration), but also different sea-levels and their effects on the network operation should be considered. This paper aims to study the behaviour of a seaside town storm sewer network, estimating the threshold condition for flooding and proposing a simplified method to assess the urban flooding severity as a function of climate variables. The case study is a portion of the drainage system of Rimini (Italy), implemented and numerically modelled by means of InfoWorks CS code. The hydraulic simulation of the sewerage system identified the percentage of nodes of the drainage system where flooding is expected to occur. Combining these percentages with both climate variables' values has lead to the definition of charts representing the combined degree of risk "rainfall-sea level" for the drainage system under investigation. A final comparison between such charts and the results obtained from a one-year rainfall-sea level time series has demonstrated the reliability of the analysis.

scholarly journals Towards a reasoned 1D river model calibration

2005 ◽  
Vol 7 (2) ◽  
pp. 91-104 ◽  
Author(s):  
Jean-Philippe Vidal ◽  
Sabine Moisan ◽  
Jean-Baptiste Faure ◽  
Denis Dartus
Keyword(s):  
Model Calibration ◽  
Expert Knowledge ◽  
Fixed Bed ◽  
Rainfall Runoff ◽  
Simulation Code ◽  
Hydraulic Simulation ◽  
Flow Equations ◽  
Knowledge Based ◽  
River Hydraulics ◽  
Knowledge Levels

Model calibration remains a critical step in numerical modelling. After many attempts to automate this task in water-related domains, questions about the actual need for calibrating physics-based models are still open. This paper proposes a framework for good model calibration practice for end-users of 1D hydraulic simulation codes. This framework includes a formalisation of objects used in 1D river hydraulics along with a generic conceptual description of the model calibration process. It was implemented within a knowledge-based system integrating a simulation code and expert knowledge about model calibration. A prototype calibration support system was then built up with a specific simulation code solving subcritical unsteady flow equations for fixed-bed rivers. The framework for model calibration is composed of three independent levels related, respectively, to the generic task, to the application domain and to the simulation code itself. The first two knowledge levels can thus easily be reused to build calibration support systems for other application domains, like 2D hydrodynamics or physics-based rainfall–runoff modelling.

Uptake of Selenium-75 by Human Lymphocytes in Vitro

1979 ◽  
Vol 109 (11) ◽  
pp. 1901-1908 ◽  
Author(s):  
Elizabeth K. Porter ◽  
Judy A. Karle ◽  
Alex Shrift
Keyword(s):  
Human Lymphocytes ◽  
Selenium 75
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