scholarly journals Performance Analysis for Road-Bioretention with Three Types of Curb Inlet Using Numerical Model

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1643
Author(s):  
Xiaoning Li ◽  
Xing Fang ◽  
Chuanhai Wang ◽  
Gang Chen ◽  
Shiwei Zheng ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Numerical Model ◽  
Shallow Water ◽  
Open Source ◽  
Surface Runoff ◽  
Overland Flow ◽  
Flood Inundation ◽  
Road Runoff ◽  
The Road ◽  
Longitudinal Slope

The FullSWOF-ZG (Full Shallow Water Overland Flow with infiltration determined by Zones and Grate-inlet submodules) program was used to simulate the road-bioretention (RB) stripe and evaluate the performance of the RB stripe with three types of curb inlet. The program was revised from the open-source FullSWOF-2D program and the validation results indicated FullSWOF-ZG predicts the RB stripe performance accurately. The model cases of 27 RB with different longitude slopes (S0), cross slopes (Sx), and curb inlet lengths (Lci) for the undepressed, composite depressed, and local depressed curb inlets were established in this study. Therefore, 81 cases in total were simulated to explore the curb inlet type and design parameter’s influence on the RB stripe performance. Overall, it was found that the bioretention control efficiency will increase with the S0 decrease, Sx increase, and Lci increase. The composite depressed curb inlet was the most efficient to intercept the road runoff into the bioretention strip, the next best is the local depressed curb inlet, and the undepressed curb inlet was the least efficient. The curb inlet and grate inlet combination in composite depressed curb inlet cases were able to deal with all the road surface runoff for the small longitudinal slope (S0 = 0.1% and 0.3%) to relieve the road local flood inundation.

Modelling of Solute Transfer to Surface Runoff

1992 ◽  
Vol 26 (7-8) ◽  
pp. 1851-1856 ◽  
Author(s):  
J. L. Lai ◽  
K. S. L. Lo
Keyword(s):  
Potassium Chloride ◽  
Surface Runoff ◽  
Laboratory Experiments ◽  
Overland Flow ◽  
Chloride Concentration ◽  
Runoff Water ◽  
Mixing Depth ◽  
Change Rate ◽  
Solute Transfer ◽  
The Media

A mixing-based model for describing solute transfer to overland flow was developed. This model included a time-dependent mixing depth of the top layer and a complete-mixed surface runoff zone. In a series of laboratory experiments, runoff was passed at various velocities and depths over a medium bed. The media were saturated with uniform concentration of potassium chloride solution. Runoff water was sampled at the beginning and end of the flume and the potassium chloride concentration analyzed. Using this model, dimensionless ultimate mixing depth and dimensionless change rate of mixing depth from experimental data were investigated and implemented. The results showed that the Reynolds number and relative roughness are two important factors.

scholarly journals On the tides and resonances of Hudson Bay and Hudson Strait

Ocean Science ◽  
2014 ◽  
Vol 10 (3) ◽  
pp. 411-426 ◽  
Author(s):  
D. J. Webb
Keyword(s):  
Numerical Model ◽  
Shallow Water ◽  
World Ocean ◽  
Tidal Energy ◽  
Tidal Range ◽  
Hudson Bay ◽  
Foxe Basin ◽  
Important Region ◽  
The World ◽  
Diurnal Tides

Abstract. The resonances of Hudson Bay, Foxe Basin and Hudson Strait are investigated using a linear shallow water numerical model. The region is of particular interest because it is the most important region of the world ocean for dissipating tidal energy. The model shows that the semi-diurnal tides of the region are dominated by four nearby overlapping resonances. It shows that these not only affect Ungava Bay, a region of extreme tidal range, but they also extend far into Foxe Basin and Hudson Bay and appear to be affected by the geometry of those regions. The results also indicate that it is the four resonances acting together which make the region such an important area for dissipating tidal energy.

scholarly journals An Open-Source Tool-Chain for Performance Analysis

2012 ◽  
pp. 37-48 ◽  
Author(s):  
Kevin Coulomb ◽  
Augustin Degomme ◽  
Mathieu Faverge ◽  
François Trahay
Keyword(s):  
Performance Analysis ◽  
Open Source ◽  
Tool Chain ◽  
Open Source Tool

scholarly journals Performance Analysis of Static Precise Point Positioning Using Open-Source GAMP

2020 ◽  
Vol 55 (2) ◽  
pp. 41-60
Author(s):  
Jabir Shabbir Malik
Keyword(s):  
Performance Analysis ◽  
Open Source ◽  
Observational Data ◽  
Precise Point Positioning ◽  
Three Dimensional ◽  
Satellite System ◽  
International Gnss Service ◽  
Positioning Accuracy ◽  
Position Accuracy ◽  
Point Positioning

AbstractIn addition to Global Positioning System (GPS) constellation, the number of Global Navigation Satellite System (GLONASS) satellites is increasing; it is now possible to evaluate and analyze the position accuracy with both the GPS and GLONASS constellation. In this article, statistical analysis of static precise point positioning (PPP) using GPS-only, GLONASS-only, and combined GPS/GLONASS modes is evaluated. Observational data of 10 whole days from 10 International GNSS Service (IGS) stations are used for analysis. Position accuracy in east, north, up components, and carrier phase/code residuals is analyzed. Multi-GNSS PPP open-source package is used for the PPP performance analysis. The analysis also provides the GNSS researchers the understanding of the observational data processing algorithm. Calculation statistics reveal that standard deviation (STD) of horizontal component is 3.83, 13.80, and 3.33 cm for GPS-only, GLONASS-only, and combined GPS/GLONASS PPP solutions, respectively. Combined GPS/GLONASS PPP achieves better positioning accuracy in horizontal and three-dimensional (3D) accuracy compared with GPS-only and GLONASS-only PPP solutions. The results of the calculation show that combined GPS/GLONASS PPP improves, on an average, horizontal accuracy by 12.11% and 60.33% and 3D positioning accuracy by 10.39% and 66.78% compared with GPS-only and GLONASS-only solutions, respectively. In addition, the results also demonstrate that GPS-only solutions show an improvement of 54.23% and 62.54% compared with GLONASS-only PPP mode in horizontal and 3D components, respectively. Moreover, residuals of GLONASS ionosphere-free code observations are larger than the GPS code residuals. However, phase residuals of GPS and GLONASS phase observations are of the same magnitude.

scholarly journals Analisis Kepuasan Wisatawan Terhadap Produk Wisata dan Strategi Pengembangan DTW Telaga Wopersnondi Biak Timur

2020 ◽  
Vol 8 (2) ◽  
pp. 291
Author(s):  
Hans S. M. Salakory ◽  
Febby Sonya Matulessy ◽  
Yansen M. I Saragih
Keyword(s):  
Performance Analysis ◽  
Customer Satisfaction ◽  
Research Problem ◽  
The Road ◽  
Satisfaction Index ◽  
Customer Satisfaction Index ◽  
Level Of Satisfaction ◽  
Analysis Technique ◽  
Great Hope ◽  
Parking Lot

Visitors of Wipersnondi Lake had great hope of fulfilling their comfort when they arrived at the tourism sites, in fact the performance felt by visitors cannot satisfy all the expectations of visitors and had  impact  on their satisfaction and convenience. This study aims to determine the level of satisfaction of tourist visitors to the availability of elements of tourism products, and to find out its developments strategy. To answer the research problem, the analysis technique used is Customer Satisfaction Index (CSI) and Importance Performance Analysis (IPA). The results of research based on CSI show that visitors are not satisfied with the performance of tourism products at Wopersnondi Lake.  Based on the results of the IPA analysis, the main priorities for tourism development in Wopersnondi Lake are increasing affordability and opening of public transport routes, improving cleanliness and increasing the number of toilets, specifically at the lake location, providing road directions to the location, and building health facilities like public health centers around Wopersnondi Lake. Furthermore, the unique aspects of  Wopersnondi Lake that must be maintained are the beautiful view at the tourist location, the comfort of the tourist attraction, the coolness, the cleanliness, the quality of the road to the lake, the parking lot area, and the availability of trash cans are things that have actually been felt and have created comfort and  good experience for visitors to Wopersnondi Lake.  This development must support the development of other tourism products.. Key Word : Importance  Performance  Analysis, Customer Satisfaction Index.

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