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  • Article
  • Open Access
9 Citations
3,376 Views
31 Pages

An Improved Flow Direction Algorithm for Engineering Optimization Problems

  • Yuqi Fan,
  • Sheng Zhang,
  • Yaping Wang,
  • Di Xu and
  • Qisong Zhang

Flow Direction Algorithm (FDA) has better searching performance than some traditional optimization algorithms. To give the basic Flow Direction Algorithm more effective searching ability and avoid multiple local minima under the searching space, and...

  • Article
  • Open Access
2 Citations
2,489 Views
19 Pages

An Improved Flow Direction Algorithm That Considers Mass Conservation for Sediment Transport Simulations

  • Hong Wei,
  • Wen Dai,
  • Bo Wang,
  • Hui Zhu and ,
  • Fei Zhao,
  • Haoyang Jiao and
  • Penghui Li
  • + 2 authors+ 0 author

27 November 2023

The sediment transport process in watersheds is an important research component of geomorphology and surface dynamics. Previous work has inferred the spatial distribution of the sediment transport rate (STR) by the flow direction algorithm and measur...

(This article belongs to the Section Water Erosion and Sediment Transport)
  • Article
  • Open Access
194 Views
39 Pages

Adaptive Oscillatory Flow Direction Algorithm with Lambert W-Based Fitness Evaluation for Accurate Photovoltaic Parameter Extraction

  • Naas Dif,
  • Ismail Dif,
  • Thameur Obeidi,
  • Mostefa Hamdani and ,
  • Abdelmalek Douara,
  • Mustapha Habib and
  • Abdelaziz Rabehi
  • + 2 authors+ 0 author

16 October 2026

Accurate extraction of photovoltaic (PV) model parameters is essential for reliable PV-system simulation, maximum power point tracking, fault diagnosis, and performance assessment. However, this task is a nonlinear, multimodal, and strongly coupled o...

  • Technical Note
  • Open Access
9 Citations
17,194 Views
14 Pages

A Python Algorithm for Shortest-Path River Network Distance Calculations Considering River Flow Direction

  • Nicolas Cadieux,
  • Margaret Kalacska,
  • Oliver T. Coomes,
  • Mari Tanaka and
  • Yoshito Takasaki

16 January 2020

Vector based shortest path analysis in geographic information system (GIS) is well established for road networks. Even though these network algorithms can be applied to river layers, they do not generally consider the direction of flow. This paper pr...

  • Article
  • Open Access
2 Citations
1,088 Views
23 Pages

The urgent need for sustainable building design calls for advanced optimization methods that simultaneously address economic and environmental objectives, particularly those involving mixed discrete-continuous variables such as insulation material, h...

(This article belongs to the Special Issue Bio-Inspired Intelligent Computation for Optimisation in Business and Engineering Applications)
  • Article
  • Open Access
50 Citations
11,618 Views
24 Pages

Reviewing Wind Measurement Approaches for Fixed-Wing Unmanned Aircraft

  • Alexander Rautenberg,
  • Martin S. Graf,
  • Norman Wildmann,
  • Andreas Platis and
  • Jens Bange

28 October 2018

One of the biggest challenges in probing the atmospheric boundary layer with small unmanned aerial vehicles is the turbulent 3D wind vector measurement. Several approaches have been developed to estimate the wind vector without using multi-hole flow...

(This article belongs to the Special Issue Atmospheric Measurements with Unmanned Aerial Systems (UAS))
  • Article
  • Open Access
2 Citations
1,865 Views
17 Pages

24 April 2025

Extracting drainage networks from a digital elevation model (DEM) with massive cells is time-consuming due to depressions and flats, where flow paths to the outlet cannot be extracted using downslope gradients. Algorithms based on a priority queue ar...

(This article belongs to the Section Hydraulics and Hydrodynamics)
  • Article
  • Open Access
19 Citations
5,517 Views
24 Pages

1 December 2022

In order to deal with the target recognition in the complex underwater environment, we carried out experimental research. This includes filtering noise in the feature extraction stage of underwater images rich in noise, or with complex backgrounds, a...

(This article belongs to the Special Issue Underwater Engineering and Image Processing)
  • Article
  • Open Access
15 Citations
2,661 Views
22 Pages

Intelligent Deep Learning Modeling and Multi-Objective Optimization of Boiler Combustion System in Power Plants

  • Chen Huang,
  • Yongshun Zheng,
  • Hui Zhao,
  • Jianchao Zhu and ,
  • Yongyan Fu,
  • Zhongyi Tang,
  • Chu Zhang and
  • Tian Peng
  • + 3 authors+ 0 author

23 July 2025

The internal combustion process in a boiler in power plants has a direct impact on boiler efficiency and NOx generation. The objective of this study is to propose an intelligent deep learning modeling and multi-objective optimization approach that co...

(This article belongs to the Special Issue Modeling, Simulation and Control in Energy Systems)
  • Feature Paper
  • Article
  • Open Access
3 Citations
3,560 Views
23 Pages

28 May 2025

Based on Graph Balancing Theory, this study proposes an anomaly detection algorithm, the Supply Chain Proof of Relation (PoR), applied to enterprise procurement networks formalized as weighted directed graphs. A mathematical framework is constructed...

(This article belongs to the Section E: Applied Mathematics)
  • Article
  • Open Access
9 Citations
3,022 Views
18 Pages

Hybrid GA-SOCP Approach for Placement and Sizing of Distributed Generators in DC Networks

  • Oscar Danilo Montoya,
  • Walter Gil-González and
  • Luis Fernando Grisales-Noreña

2 December 2020

This research addresses the problem of the optimal location and sizing distributed generators (DGs) in direct current (DC) distribution networks from the combinatorial optimization. It is proposed a master–slave optimization approach in order t...

(This article belongs to the Special Issue Control, Optimization and Planning of Power Distribution Systems)
  • Article
  • Open Access
11 Citations
3,939 Views
24 Pages

A Method for Dynamical Sub-Watershed Delimitating by No-Fill Digital Elevation Model and Defined Precipitation: A Case Study of Wuhan, China

  • Hongping Zhang,
  • Xinwen Cheng,
  • Lei Jin,
  • Dong Zhao and ,
  • Tianjing Feng and
  • Kun Zheng
  • + 1 author+ 0 author

11 February 2020

Watershed delimitation is very important in flood control management. The traditional sub-watersheds delimitated by a filling digital elevation model (DEM) may change the real sink area, such that it may not be the best choice in studies sensitive to...

(This article belongs to the Section Urban Water Management)
  • Article
  • Open Access
15 Citations
5,443 Views
21 Pages

12 July 2017

Improving the performance of power systems has become a challenging task for system operators in an open access environment. This paper presents an optimization approach for solving the multi-objective scheduling problem using a modified non-dominate...

(This article belongs to the Special Issue Battery Energy Storage Applications in Smart Grid)
  • Article
  • Open Access
6 Citations
3,782 Views
10 Pages

Retaining Relative Height Information: An Enhanced Technique for Depression Treatment in Digital Elevation Models

  • Bo Chen,
  • Chunying Ma,
  • Yao Xiao,
  • Hanxin Gao and ,
  • Peijun Shi and
  • Jing Zheng
  • + 1 author+ 0 author

25 November 2021

This study presents an enhanced variant of the priority-flood based algorithm proposed by Wang and Liu for treating depressions in digital elevation models (DEMs). The enhanced variant redefines spill elevation, the key concept of the original algori...

(This article belongs to the Special Issue Research Progress on Watershed Ecohydrological Processes)
  • Feature Paper
  • Article
  • Open Access
3 Citations
2,832 Views
14 Pages

21 July 2021

Algorithms for network flow problems, such as maximum flow, minimum cost flow, and multi-commodity flow problems, are continuously developed and improved, and so, random network generators become indispensable to simulate the functionality and to tes...

(This article belongs to the Section E: Applied Mathematics)
  • Proceeding Paper
  • Open Access
3 Citations
2,380 Views
5 Pages

An Analytical Solution for the Hydraulics of Looped Pipe Networks

  • Mohammad Mehdi Riyahi,
  • Amin E. Bakhshipour,
  • Carlo Giudicianni,
  • Ulrich Dittmer and ,
  • Ali Haghighi and
  • Enrico Creaco
  • + 1 author+ 0 author

This study introduces an analytical solution for the hydraulic analysis of looped water distribution networks (WDNs). Conventional approaches to solving ∆Q equations for looped water discharge correction entail iterative hydraulic analysis to c...

(This article belongs to the Proceedings of The 3rd International Joint Conference on Water Distribution Systems Analysis & Computing and Control for the Water Industry (WDSA/CCWI 2024))
  • Article
  • Open Access
14 Citations
6,241 Views
18 Pages

Geovisualization of Hydrological Flow in Hexagonal Grid Systems

  • Mingke Li,
  • Heather McGrath and
  • Emmanuel Stefanakis

29 April 2022

Recent research has extended conventional hydrological algorithms into a hexagonal grid and noted that hydrological modeling on a hexagonal mesh grid outperformed that on a rectangular grid. Among the hydrological products, flow routing grids are the...

(This article belongs to the Special Issue Geovisualization: Current Trends, Challenges, and Applications)
  • Article
  • Open Access
3 Citations
4,077 Views
16 Pages

1 July 2018

The medium-voltage direct-current (MVDC) ship power system has been extensively investigated and discussed in recent years. This paper presents an alternating current/direct-current (AC/DC) power flow algorithm based on complex affine arithmetic for...

(This article belongs to the Special Issue Electric Power Systems Research 2018)
  • Article
  • Open Access
13 Citations
5,361 Views
19 Pages

10 January 2021

As a typical single-pump multi-actuator system, the hydraulic manipulator faces the flow saturation problem when moving at a high speed to track a desired trajectory. To overcome this problem, this paper proposes a real-time anti-saturation flow opti...

(This article belongs to the Section Actuators for Manufacturing Systems)
  • Article
  • Open Access
28 Citations
979 Views
14 Pages

8 January 2018

We demonstrate the use of different visual aggregation techniques to obtain non-cluttered visual representations of scanpaths. First, fixation points are clustered using the mean-shift algorithm. Second, saccades are aggregated using the Attribute-Dr...

  • Feature Paper
  • Article
  • Open Access
3,536 Views
16 Pages

10 June 2022

This study presents a new imaging-based algorithm for simultaneously determining multiple velocity fields from stratified crossflows optically captured in a single field of view. The concept implements an additional automatic peak finding scheme into...

(This article belongs to the Special Issue Advances in Experimental Hydraulics, Coast and Ocean Hydrodynamics)
  • Article
  • Open Access
15 Citations
3,682 Views
15 Pages

Subgrid Variational Optimized Optical Flow Estimation Algorithm for Image Velocimetry

  • Haoxuan Xu,
  • Jianping Wang,
  • Ya Zhang,
  • Guo Zhang and
  • Zhaolong Xiong

30 December 2022

The variational optical flow model is used in this work to investigate a subgrid-scale optimization approach for modeling complex fluid flows in image sequences and estimating their two-dimensional velocity fields. To solve the problem of lack of sub...

(This article belongs to the Special Issue Artificial Intelligence in Computer Vision: Methods and Applications)
  • Article
  • Open Access
3 Citations
2,151 Views
14 Pages

Novel GPU-Based Method for the Generalized Maximum Flow Problem

  • Delia Elena Spridon,
  • Adrian Marius Deaconu and
  • Javad Tayyebi

This paper investigates the application of a minimum loss path finding algorithm to determine the maximum flow in generalized networks that are characterized by arc losses or gains. In these generalized network flow problems, each arc has not only a...

  • Article
  • Open Access
16 Citations
7,305 Views
30 Pages

18 September 2021

In this work, we contribute to the development of numerical algorithms for the direct simulation of three-dimensional incompressible multiphase flows in the presence of multiple fluids and solids. The volume of fluid method is used for interface trac...

(This article belongs to the Special Issue Advances in Numerical Methods for Computational Fluid Dynamics With Open-Source Software)
  • Article
  • Open Access
2 Citations
1,815 Views
14 Pages

25 November 2024

Navigating through complex flow fields, underwater vehicles often face insufficient thrust to traverse particularly strong current areas, necessitating consideration of the physical feasibility of paths during route planning. By constructing a flow f...

(This article belongs to the Section Ocean Engineering)
  • Article
  • Open Access
14 Citations
3,574 Views
19 Pages

Universal Power Flow Algorithm for Bipolar Multi-Terminal VSC-HVDC

  • Zhou Li,
  • Yan He,
  • Ting-Quan Zhang and
  • Xiao-Ping Zhang

26 February 2020

An effective and accurate power flow algorithm provides control references for active power dispatch and initial steady state operating points, used for stability analysis, short-circuit calculations, and electromagnetic transient simulations, which...

  • Article
  • Open Access
2 Citations
3,079 Views
18 Pages

12 May 2020

The interconnection of power and natural gas systems can improve the flexibility of system operation and the capacity of renewable energy consumption. It is necessary to consider the interaction between both, and carry out collaborative optimization...

(This article belongs to the Section Electrical, Electronics and Communications Engineering)
  • Article
  • Open Access
2 Citations
1,823 Views
17 Pages

With the continuous development of microfluidic technology, continuous-flow microfluidic biochips (CFMBs) are being increasingly used in the Internet of Things. The automation design of CFMBs has also received widespread attention. The architecture d...

(This article belongs to the Section Industrial Electronics)
  • Article
  • Open Access
8 Citations
2,689 Views
17 Pages

31 August 2023

The measurement of plant sap flow has long been a traditional method for quantifying transpiration. However, conventional direct measurement methods are often costly and complex, thereby limiting the widespread application of tree sap flow monitoring...

(This article belongs to the Special Issue Forest Hydrology under Climate Change)
  • Article
  • Open Access
34 Citations
9,430 Views
11 Pages

31 December 2013

This paper demonstrates a novel flow sensor with two-dimensional 360° direction sensitivity achieved with a simple structure and a novel data fusion algorithm. Four sensing elements with roundabout wires distributed in four quadrants of a circle comp...

(This article belongs to the Section Physical Sensors)
  • Review
  • Open Access
43 Citations
9,003 Views
27 Pages

A Review of Research on the Vacuum Plume

  • Guobiao Cai,
  • Lihui Liu,
  • Bijiao He,
  • Guilong Ling and ,
  • Huiyan Weng and
  • Weizong Wang
  • + 1 author+ 0 author

11 November 2022

Chemical and electrical thrusters are generally utilized to control the attitude and orbit of spacecraft in aerospace. When they are firing, the exhaust expands into the vacuum environment, known as the vacuum plume. The plume flow can collide with s...

(This article belongs to the Special Issue Latest Advancements in Aeronautics and Astronautics: Celebrating the 70th Anniversary of Beihang University)
  • Article
  • Open Access
2 Citations
3,085 Views
22 Pages

Development of a New Method for Debris Flow Runout Assessment in 0-Order Catchments: A Case Study of the Otoishi River Basin

  • Ahmad Qasim Akbar,
  • Yasuhiro Mitani,
  • Ryunosuke Nakanishi,
  • Hiroyuki Honda and
  • Hisatoshi Taniguchi

Debris flows are rapid, destructive landslides that pose significant risks in mountainous regions. This study presents a novel algorithm to simulate debris flow dynamics, focusing on sediment transport from 0-order basins to depositional zones. The a...

(This article belongs to the Special Issue Landslides Runout: Recent Perspectives and Advances)
  • Article
  • Open Access
3 Citations
4,243 Views
19 Pages

Two-Phase Flow Simulations Using 1D Centerline-Based C- and U-Shaped Pipe Meshes

  • Thinh Quy Duc Pham,
  • Jichan Jeon,
  • Daeseong Jo and
  • Sanghun Choi

25 February 2021

This study aims to investigate the pressure changes, bubble dynamics, and flow physics inside the U- and C-shaped pipes with four different gravitational directions. The simulation is performed using a 1D centerline-based mesh generation technique al...

(This article belongs to the Special Issue Computational Fluid Mechanics and Heat Transfer)
  • Article
  • Open Access
1 Citations
1,784 Views
16 Pages

28 November 2024

Determining causal inference has become popular in physical and engineering applications. While the problem has immense challenges, it provides a way to model the complex networks by observing the time series. In this paper, we present the optimal co...

(This article belongs to the Section Information Theory, Probability and Statistics)
  • Article
  • Open Access
540 Views
32 Pages

A Hybrid Battery Thermal Management System Coupling Static Immersion and Refrigerant-Based Direct Cooling: Flow Distribution Regulation and Multi-Objective Optimization

  • Zhanwei Lian,
  • Yi Zhu,
  • Zhengzhi Yao,
  • Wei Wang and ,
  • Qianlei Shi,
  • Xiaole Yao,
  • Qian Liu,
  • Xing Ju,
  • Xiaoqing Zhu and
  • Chao Xu
  • + 5 authors+ 0 author

6 September 2026

To address the limitations of individual battery thermal management technologies, this study proposes a hybrid battery thermal management system coupling static immersion cooling with refrigerant-based direct cooling. The system employs parallel uppe...

(This article belongs to the Special Issue Thermal Runaway and Thermal Management: Toward Safe and Reliable Batteries)
  • Article
  • Open Access
14 Citations
4,635 Views
20 Pages

This article presents two new chemical plume tracing (CPT) algorithms for using on autonomous underwater vehicles (AUVs) to locate hydrothermal vents. We aim to design effective CPT navigation algorithms that direct AUVs to trace emitted hydrothermal...

(This article belongs to the Special Issue Autonomous Underwater Vehicle Technology Advances in Ocean Observation)
  • Article
  • Open Access
3 Citations
1,812 Views
14 Pages

Sequential and Parallel Algorithms to Compute Turbulent Coherent Structures

  • Sergio Gandía-Barberá,
  • Andres Cremades,
  • Ricardo Vinuesa,
  • Sergio Hoyas and
  • María Jezabel Pérez-Quiles

23 October 2024

The behavior of turbulent flows remains a significant unsolved problem in physics. Recently, a large quantity of effort has been directed toward understanding the non-linear interactions of the different flow structures in order to address this chall...

(This article belongs to the Section E: Applied Mathematics)
  • Article
  • Open Access
5 Citations
3,585 Views
17 Pages

5 September 2022

This study proposes a simultaneous optimization model that considers flow assignment and vehicle capacity for the problem of transit network design to determine the route structure and frequencies simultaneously. The problem is focused on reducing th...

(This article belongs to the Special Issue Sustainable, Resilient and Smart Mobility)
  • Article
  • Open Access
9 Citations
5,005 Views
20 Pages

Magnetohydrodynamic and Ferrohydrodynamic Fluid Flow Using the Finite Volume Method

  • Grigorios Chrimatopoulos,
  • Efstratios E. Tzirtzilakis and
  • Michalis A. Xenos

25 December 2023

Many problems in fluid mechanics describe the change in the flow under the effect of electromagnetic forces. The present study explores the behaviour of an electric conducting, Newtonian fluid flow applying the magnetohydrodynamics (MHD) and ferrohyd...

  • Article
  • Open Access
4 Citations
4,516 Views
16 Pages

20 November 2018

A micro hydropower plant of the run-of-river type is considered to be the most cost-effective investment in developing counties. This paper presents a novel methodology to improve flow estimation, without using the flow direction curve (FDC) method,...

(This article belongs to the Special Issue Sustainable Energy Development Strategies: Energy Efficiency and Renewables)
  • Article
  • Open Access
19 Citations
10,363 Views
21 Pages

6 October 2018

This paper presents a real-time, robust and low-drift depth-only SLAM (simultaneous localization and mapping) method for depth cameras by utilizing both dense range flow and sparse geometry features from sequential depth images. The proposed method i...

(This article belongs to the Special Issue Depth Sensors and 3D Vision)
  • Article
  • Open Access
68 Citations
7,415 Views
22 Pages

Modeling and Optimization of Hydraulic and Thermal Performance of a Tesla Valve Using a Numerical Method and Artificial Neural Network

  • Kourosh Vaferi,
  • Mohammad Vajdi,
  • Amir Shadian,
  • Hamed Ahadnejad and ,
  • Farhad Sadegh Moghanlou,
  • Hossein Nami and
  • Haleh Jafarzadeh
  • + 2 authors+ 0 author

22 June 2023

The Tesla valve is a non-moving check valve used in various industries to control fluid flow. It is a passive flow control device that does not require external power to operate. Due to its unique geometry, it causes more pressure drop in the reverse...

(This article belongs to the Special Issue Thermodynamic Optimization of Industrial Energy Systems)
  • Article
  • Open Access
5 Citations
2,732 Views
14 Pages

Modeling of the Flow Field and Clad Geometry of a Molten Pool during Laser Cladding of CoCrCuFeNi High-Entropy Alloys

  • Dachuan Tian,
  • Chonggui Li,
  • Zhiguo Hu,
  • Xintong Li and ,
  • Yajun Guo,
  • Xiaosong Feng,
  • Zhenhai Xu,
  • Xiaoguang Sun and
  • Wenge Li
  • + 4 authors+ 0 author

25 January 2024

A flow field analysis was performed in this research using the ANSYS Fluent module, and a dynamic heat source employing UDF was constructed using the DEFINE_PROFILE macro. A VOF model was developed to track the volume fraction of each fluid throughou...

(This article belongs to the Topic Fluid Mechanics)
  • Article
  • Open Access
3 Citations
3,307 Views
20 Pages

Hybrid Vehicle CO2 Emissions Reduction Strategy Based on Model Predictive Control

  • Carlos A. Reusser,
  • Ramón Herrera Hernández and
  • Tek Tjing Lie

This work proposes a hybrid drive controlled configuration, using a minimum emissions search algorithm, which ensures the operation of the Internal Combustion Engine (ICE) in its fuel efficiency range, minimizing CO2 emissions by controlling the powe...

(This article belongs to the Section Electrical and Autonomous Vehicles)
  • Article
  • Open Access
2 Citations
1,797 Views
25 Pages

Three-Dimensional Non-Uniform Sampled Data Visualization from Multibeam Echosounder Systems for Underwater Imaging and Environmental Monitoring

  • Wenjing Cao,
  • Shiliang Fang,
  • Chuanqi Zhu,
  • Miao Feng and ,
  • Yifan Zhou and
  • Hongli Cao
  • + 1 author+ 0 author

15 January 2025

This paper proposes a method for visualizing three-dimensional non-uniformly sampled data from multibeam echosounder systems (MBESs), aimed at addressing the requirements of monitoring complex and dynamic underwater flow fields. To tackle the challen...

(This article belongs to the Special Issue Ocean Remote Sensing Based on Radar, Sonar and Optical Techniques)
  • Article
  • Open Access
8 Citations
4,535 Views
14 Pages

Predicting the Profitability of Directional Changes Using Machine Learning: Evidence from European Countries

  • Nicholas D. Belesis,
  • Georgios A. Papanastasopoulos and
  • Antonios M. Vasilatos

In this paper, we follow the suggestions of past literature to further explore the prediction of the profitability direction by employing different machine learning algorithms, extending the research in the European setting and examining the effect o...

(This article belongs to the Special Issue Financial Valuation and Econometrics)
  • Article
  • Open Access
33 Citations
4,445 Views
17 Pages

6 April 2020

In the present work, ten data mining algorithms have been used to generate models capable of predicting the surface roughness of parts printed on polylactic acid (PLA) by using fused deposition modeling (FDM). The models have been trained using exper...

(This article belongs to the Section Polymer Analysis and Characterization)
  • Letter
  • Open Access
5 Citations
4,412 Views
12 Pages

2 January 2019

This paper proposes a switched-element direction finding (SEDF) system based Direction of Arrival (DOA) estimation method for un-cooperative wideband Orthogonal Frequency Division Multi Linear Frequency Modulation (OFDM-LFM) radar signals. This metho...

(This article belongs to the Special Issue Sensor Signal and Information Processing II)
  • Feature Paper
  • Article
  • Open Access
5 Citations
4,163 Views
20 Pages

Guaranteeing data transmission between modules is the key for application development of modular robotic systems. In a multi-channel modular robotic system, intersection modules play an essential role of communication channel selection in controlling...

(This article belongs to the Section Systems & Control Engineering)
  • Article
  • Open Access
27 Citations
8,675 Views
12 Pages

12 April 2016

Rapid detection of bursts and leaks in water distribution systems (WDSs) can reduce the social and economic costs incurred through direct loss of water into the ground, additional energy demand for water supply, and service interruptions. Many real-t...

(This article belongs to the Special Issue Hydroinformatics and Urban Water Systems)

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