Ruo-Qian Wang

Ruo-Qian Wang
Rutgers, The State University of New Jersey | Rutgers · Department of Civil and Environmental Engineering

PhD
Writing a proposal with AI and sea-level rise and 3D printing and renewable energy and hyperspectral and 5G

About

88
Publications
17,559
Reads
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549
Citations
Additional affiliations
January 2019 - present
Rutgers, The State University of New Jersey
Position
  • Professor (Assistant)
August 2017 - December 2018
University of Dundee
Position
  • Lecturer
August 2014 - January 2016
Massachusetts Institute of Technology
Position
  • PostDoc Position
Description
  • Bio-inspired Design for Agriculture Engineering
Education
September 2009 - June 2014
Massachusetts Institute of Technology
Field of study
  • Environmental Fluid Mechanics and Coastal Engineering
June 2007 - July 2008
Stanford University
Field of study
  • Environmental Engineering / Singapore Stanford Partnership
June 2007 - July 2008
Nanyang Technological University
Field of study
  • Environmental Engineering

Publications

Publications (88)
Preprint
Full-text available
Photosynthesizing microalgae produce more than 50% of oxygen in the atmosphere and are crucial for the survival of many living systems such as coral reefs. To address the declining of coral reefs, artificial reefs have been introduced to encapsue the aglae cells in a polymer matrix but the effects of nanoscale pollutants on these engineered systems...
Preprint
A deformable microfluidic system and a fluidic dynamic model have been successfully coupled to understand the dynamic fluid-structure interaction in transient flow, designed to understand the dentine hypersensitivity caused by hydrodynamic theory. The Polydimethylsiloxane thin sidewalls of the microfluidic chip are deformed with air pressure rangin...
Preprint
Full-text available
Recent observation reveals a stunning fact that the coastal tides are experiencing a rapid change in the last century at several places in the world. High-accuracy tide level data is needed to achieve a wide and refined understanding of the phenomenon. In-situ measurements - the traditional and main data source to support tidal harmonic analysis -...
Article
Filling missing data in cloud-covered areas of satellite imaging is an important task to improve data quantity and quality for enhanced earth observation. Traditional cloud filling studies focused on continuous numerical data such as temperature and cyanobacterial concentration in the open ocean. Cloud data filling issues in coastal imaging have no...
Preprint
Full-text available
Urban flooding is becoming a common and devastating hazard to cause life loss and economic damage. Monitoring and understanding urban flooding in the local scale is a challenging task due to the complicated urban landscape, intricate hydraulic process, and the lack of high-quality and resolution data. The emerging smart city technology such as moni...
Preprint
Full-text available
In the last decades, the development of smartphones, drones, aerial patrols, and digital cameras enabled high-quality photographs available to large populations and, thus, provides an opportunity to collect massive data of the nature and society with global coverage. However, the data collected with new photography tools is usually oblique - they a...
Preprint
Full-text available
Filling missing data in cloud-covered areas of satellite imaging is an important task to improve data quantity and quality for enhanced earth observation. Traditional cloud filling studies focused on continuous numerical data such as temperature and cyanobacterial concentration in the open ocean. Cloud data filling issues in coastal imaging is far...
Article
Power curve, the functional relationship that governs the process of converting a set of weather variables experienced by a wind turbine into electric power, is widely used in the wind industry to estimate power output for planning and operational purposes. Existing methods for power curve estimation have three main limitations: (i) they mostly rel...
Article
Efficient separation of blood cells and plasma is key for numerous molecular diagnosis and therapeutics applications. Despite various microfluidics-based separation strategies having been developed, there is still a need for a simple, reliable, and multiplexing separation device that can process a large volume of blood. Here we show a microbead-pac...
Chapter
Artificial intelligence (AI) is fundamentally changing our society, benefiting from the big data revolution and dramatical declination in the Internet of Things (IoT) costs. Flood research and applications will progress with this emerging technology, as AI is creating new flood data sources, enhancing our capability to analyze the data, and improvi...
Preprint
Full-text available
Efficient separation of blood cells and plasma is key for numerous molecular diagnosis and therapeutics applications. Despite various microfluidics-based separation strategies have been developed, a simple, reliable, and multiplexing separation device that can process a large volume of blood is still missing. Here we show a microbead packed deforma...
Article
Full-text available
Cage-based aquaculture has been growing rapidly in recent years. In some locations, cage-based aquaculture has resulted in the clustering of large quantities of cages in fish farms located in inland lakes or reservoirs and coastal embayments or fjords, significantly affecting flow and mass transport in the surrounding waters. Existing studies have...
Article
Full-text available
Water-related problems affect several billion people’s lives and represent an annual challenge assessed at multitrillion US dollars, which substantiates their core role in the UN Sustainable Development Goals. Preventing direct and indirect impacts associated with water excess or water scarcity events requires expert judgement based on reliable inf...
Preprint
Full-text available
Power curve is widely used to estimate power output for planning and operational purposes. Existing methods for constructing power curves have three main limitations: (i) they mostly rely on wind speed as the sole input, thus ignoring the secondary, yet possibly significant effects of other environmental factors, (ii) they largely overlook the comp...
Conference Paper
Monitoring High-tide Flooding (HTF) is challenging because HTF usually spreads widely and forms localized water accumulations depending on the natural processes and infrastructure. Stationary monitoring systems and satellite imaging have their certain limitations. To date, citizen science is considered as the most promising means to monitor HTF, wh...
Article
Twitter announced on 18 June 2019 that it would remove the precise geotagging feature in tweets. In addition to protecting the location privacy of users, this change also affects human behaviour studies based on geotagged tweets. We discuss the potential impact of Twitter’s decision and how researchers can respond to this change.
Preprint
Full-text available
The 5G band allocated in the 26 GHz spectrum referred to as 3GPP band n258, has generated a lot of anxiety and concern in the meteorological data forecasting community including the National Oceanic and Atmospheric Administration (NOAA). Unlike traditional spectrum coexistence problems, the issue here stems from the leakage of n258 band transmissio...
Preprint
Full-text available
This paper presents a new approach of using computer vision and 3D reconstruction technology to extract quantitative data from the footage of the Edenville dam failure published on social media. The left embankment of the Edenville dam's Tittabawassee River section breached on May 19, 2020, leading to extensive flooding in Central Michigan. Geotech...
Poster
Full-text available
Ocean waves interact with the environment in many ways. They transport energy and mass, and the resultant sea-surface roughness defines the drag coefficients that transmits wind energy to the ocean (Drennan et al., 2003). Through erosion and deposition, waves change the shape and landscape of coastal areas. Storm surge waves can cause flood damage...
Article
Full-text available
Flooding management requires collecting real-time onsite information widely and rapidly. As an emerging data source, social media demonstrates an advantage of providing in-time, rich data in the format of texts and photos and can be used to improve flooding situation awareness. The present study shows that social media data, with additional informa...
Preprint
Flooding management requires collecting real-time onsite information widely and rapidly. As an emerging data source, social media demonstrates an advantage of providing in-time, rich data in the format of texts and photos and can be used to improve flooding situation awareness. The present study shows that social media data, with additional informa...
Conference Paper
New Jersey is targeted to become a leader in offshore wind energy in the country with the recent contract of 1.2 GW in phase 1 and an ambitious plan to increase the offshore wind energy capacity to 3500 MW by 2030 (Board of Public Utilities, 2018). The booming wind energy sector needs expertise and knowledge to support the design of wind farms, the...
Conference Paper
Decision-making in the coastal protection projects often involves assessing a large number of shoreline decision combinations. Examining the impacts of the decisions using large-scale numerical models is time-consuming. For example, the numerical model to produce the result of one run in estimating the sea-level rise (SLR) impact in the San Francis...
Article
Full-text available
A novel micro- and nano-fluidic device stacked with magnetic beads has been developed to efficiently trap, concentrate, and retrieve Escherichia coli (E. coli) from bacterial suspension and pig plasma. The small voids between the magnetic beads are used to physically isolate the bacteria in the device. We used computational fluid dynamics (CFD), 3D...
Chapter
Artificial Intelligence (AI) is fundamentally changing our society, benefiting from the big data revolution and dramatical declination in the Internet of Things (IoT) costs. Flood research and applications will progress with this emerging technology, as AI is creating new flood data sources, enhancing our capability to analyze the data, and improvi...
Conference Paper
We studied the effect of sea-level rise (SLR) on the coastal infrastructure of the northern UAE using a calibrated hydrodynamic model. To investigate the effect of coastal protection schemes (such as the construction of seawalls) on the hydrodynamics, we conducted a sensitivity analysis for high-fidelity numerical models with high-dimensional outpu...
Article
Sensitivity analysis has been widely used to gain more insights on complex system behavior, to facilitate model reduction, system design and decision making. Typically, sensitivity analysis entails many evaluations of the system model. For expensive system models with high-dimensional outputs, direct adoption of such models for sensitivity analysis...
Preprint
Full-text available
div>A micro- and nano-fluidic device stacked with magnetic beads is developed to efficiently trap, concentrate, and retrieve Escherichia coli (E. coli) from bacteria suspension and pig plasma. The small voids between the magnetic beads are used to physically isolate the bacteria in the device. We use computational fluid dynamics (CFD), 3D tomogra...
Article
As an example of multipurpose utilization of marine structures, the hydrodynamic performance of an offshore-stationary Oscillating Water Column (OWC) device with an immersed horizontal bottom plate was investigated through both experimental tests and numerical simulations. Based on the open source package OpenFOAM and toolbox waves2Foam, the numeri...
Conference Paper
Full-text available
Urban flood is difficult to monitor, because the traditional satellite imaging is limited in resolution and scanning period and the sensor network is sparsely distributed and located at a limited number of fixed locations near waterways or coastline. The emerging Twitter-based flood detection could potentially address this issue with a wide and con...
Conference Paper
Sensitivity analysis provides important information on how the input uncertainty impacts the system output uncertainty. Typically, sensitivity analysis entails large number of system evaluations. For expensive system models with high-dimensional outputs, direct adoption of such models for sensitivity analysis poses significant computational challen...
Poster
Full-text available
We demonstrate a novel and simple approach for building a stable PDMS “nano-sieve” device with an aspect ratio of 4,000:1 (width/height) without roof collapsing.
Poster
Full-text available
Taking the advantage of the flexibility of the microfluidic structure, we demonstrate a portable and highly precise device that can efficiently trap, separate, concentrate, and release the colloids with a high flow speed.
Conference Paper
Full-text available
Many factors are driving the evolution of beach topography, including wave, tide, river discharge, wind, sea levels, and coastal infrastructure. Recent studies showed that local coastal protection construction can alter the hydrodynamics at various tidal frequencies (Wang et al., 2017). In addition, such local hydrodynamics change could lead to a r...
Article
Full-text available
Deformable microfluidics may be potentially used in cell manipulation, optical sensing, and imaging applications, and have drawn considerable scientific interests in the recent past. The excellent tunability of deformable microfluidic devices can provide controllable capture, deposition, and target release. We demonstrated a one-dimensional nano-si...
Article
To inform the decision-making of coastal protection against sea level rise (SLR), we have to estimate the impact of shoreline alterations on the hydrodynamics. This task involves estimating of a large number of shoreline decision combina- tions. Here we present a sensitivity analysis based approach to understand how the variation in the shoreline,...
Preprint
As an example of multipurpose utilization of marine structures, the hydrodynamic performance of an offshore-stationary Oscillating Water Column (OWC) device with an immersed horizontal bottom plate was investigated through both experimental tests and numerical simulations. Based on the open source package OpenFOAM and toolbox waves2Foam, the numeri...
Conference Paper
Full-text available
Internal erosion is a hydro-mechanical coupled mechanism that may affect the stability of embankment dams (Fell et al., 2005). Flow induced migration of fine particles causes soil deformations as the remaining soil grains rearrange in order to sustain the applied loads. Recently Chen et al. (2017) where able to identify the macroscopic effects such...
Article
Full-text available
A three dimensional numerical model was solved for a turbulent incompressible steady flow and the discrepancies and similarities between the software OpenFOAM® and ANSYS® Fluent on the flow modelling are analyzed. The evaluation was done for the meshing, setup and simulation step of the modelling process. Outcomes have been contrasted with experime...
Article
Full-text available
Sea‐level rise (SLR) is placing both immediate and long‐term pressures on coastal communities to take protective actions. Projects in the United States, and in many locations throughout the world, generally involve local jurisdictions raising the elevation of shoreline protection elements, with limited or no analysis of the feedback between shoreli...
Article
Full-text available
Hyper-resolution datasets for urban flooding are rare. This problem prevents detailed flooding risk analysis, urban flooding control, and the validation of hyper-resolution numerical models. We employed social media and crowdsourcing data to address this issue. Natural Language Processing and Computer Vision techniques are applied to the data colle...
Article
Full-text available
Runoff coefficient is an important parameter for the decision support of urban stormwater management. However, factors like comprehensive land-use type, variable spatial elevation, dynamic rainfall and groundwater elevation, make the direct estimation of runoff coefficient difficult. This paper presented a novel method to estimate the urban runoff...
Article
Full-text available
Sea-level rise increases the risk of storms and other short term water-rise events, because it sets a higher water level such that coastal surges become more easily to overtop and cause floods. To protect coastal communities, it is necessary to understand the interaction among multi-day and tidal sea-level variabilities, coastal infrastructure, and...
Conference Paper
Full-text available
Delineation of urban catchment areas is important in the decision making of stormwater management, city planning, and urban flooding mitigation. We propose a new method using inverse modeling to identify the area and location of the urban catchment. The method is applied to the city of Shanghai, China.
Article
Full-text available
Drip irrigation is a means of distributing the exact amount of water a plant needs by dripping water directly onto the root zone. It can produce up to 90% more crops than rain-fed irrigation, and reduce water consumption by 70% compared to conventional flood irrigation. Drip irrigation may enable millions of poor farmers to rise out of poverty by g...
Article
This paper proposes a new Starling resistor architecture to control flow limitation in flexible tubes by introducing a needle valve to restrict inlet flow. The new architecture is able to separately control the activation pressure and the flow rate: The tube geometry determines the activation pressure and the needle valve determines the flow rate....
Article
Full-text available
A model for polydisperse particle clouds has been developed in this study. We extended the monodisperse particle cloud model of Lai et al. (Environ Fluid Mech 13(5):435–463, 2013) to the case of polydisperse particles. The particle cloud is first considered to be a thermal or buoyant vortex ring, with the thermal induced velocity field modeled by a...
Conference Paper
Full-text available
One of the major issues that prevent a large-scale dissemination of drip irrigation system is the requirement of high pumping pressure, which incurs a high cost of pumping and power systems. The high pressure is used to maintain the working condition of pressure-compensate emitters, which are installed at the outlets of drip irrigation system to co...
Article
Full-text available
Based on the solution of Atanasiu et al. (2004), a theoretical model for axisymmetric vortex flows is derived in the present study by solving the vorticity transport equation for an inviscid, incompressible fluid in cylindrical coordinates. The model can describe a variety of axisymmetric flows with particular boundary conditions at a moderately hi...
Article
This study provides new parameters for the use of powdered activated carbon (PAC) in a raw water aqueduct under emergency response. Here, we developed a coupled model that dynamically predicts simultaneous PAC transport and pollutant removal in the water aqueduct. To calibrate the model, we have performed a Particle Image Velocimetry (PIV) settling...
Conference Paper
This paper presents a mathematical model investigating the physics behind pressure-compensating (PC) drip irrigation emitters. A network of PC emitters, commonly known as drip irrigation, is an efficient way to deliver water to crops while increasing yield. Irrigation can provide a means for farmer to grow more sensitive, and profitable crops and h...
Article
Full-text available
This paper presents a mathematical model investigating the physics behind pressure-compensating (PC) drip irrigation emitters. A network of PC emitters, commonly known as drip irrigation, is an efficient way to deliver water to crops while increasing yield. Irrigation can provide a means for farmer to grow more sensitive, and profitable crops and h...
Poster
Full-text available
One of the major issues that prevent a largescale dissemination of drip irrigation system is the requirement of high pumping pressure, which incurs a high cost of pumping and power systems. The high pressure is used to maintain the working condition of pressure-compensate emitters, which are installed at the outlets of drip irrigation system to com...
Article
Open-water disposal of sediment is an important component in many coastal engineering projects. Numerous studies have focused on small-scale dynamics and claimed their results can be scaled up by cloud number scaling. However, this scaling method is largely empirical and unexamined. The present paper confirms that the cloud number scaling provides...
Conference Paper
Full-text available
Branching flows are often observed in biological systems, e.g. circulatory and respiration systems in animals. The radii of the parent and daughter branches were found following the Murray's law such that the sum of the metabolic and the pumping costs is minimized. This theory is able to give the optimum thickness ratio of the pipes but misses an i...
Article
Full-text available
Multiphase starting jets and plumes are widely observed in nature and engineering systems. An environmental engineering example is open-water disposal of sediments. The present study numerically simulates such starting jets/plumes using Large Eddy Simulations. The numerical scheme is first validated for single phase plumes, and the relationship bet...
Conference Paper
Ash accumulation in the channels of ceramic, honeycomb-type particulate filters is controlled by several key parameters, which are the focus of this study. Ultimately, it is the formation of ash deposits, their transport, and the manner in which the ash accumulates in the particulate filter, which determines the useful service life of the filter an...
Conference Paper
Full-text available
Euler-Lagrangian four-way coupling Large Eddy Simulation is performed to study the characteristics of the leading vortex ring of a starting particle-laden jet. The vertical distributions of vorticity, tracer concentration and concentration are obtained by horizontally integrating over the same height at the center plane. The edge of the "vortex rin...
Article
A series of Euler-Lagrangian four-way coupling Large Eddy Simulations (LES) are performed to study the dynamics of settling particle clouds. The numerical method is first validated by comparing with existing experimental results. Then, a parametric study is performed with various initial release shapes, particle sizes, and cloud buoyancies. Three i...