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Salman Shahid
Abu Dhabi, United Arab Emirates0 followers0 following
- About
- Bachelor's
- Target
- IELTS
- GRE
Male
Abu Dhabi, United Arab Emirates
Work ExperienceResearch Assistant
Abu Dhabi University - Full Time
Jun 15, 2020 - Dec 31, 2021 · 1 yr 7 mos
Abu Dhabi, United Arab Emirates
Worked under supervision of Dr. Sharul Sham Bin Dol and Dr. Mohamed S. Gadala for projects involving Electrical Submersible Pump, Solar Endurance Glider and Enhancement of Vertical Axis Wind Turbines performance through modifications on Wing.
• Performed complex Turbulence Two-phase experiment and Numerical Simulation for ESP Multi-phase Head Degredation Visualization and Solar Endurance Glider
• Attended multiple Conferences as well as Research Competitions (Sultan Qaboos Research Competition – 3rd Place)
• Consulted and ordered relevant components for ESP experiment including a High Speed Camera for ESP Two Phase Flow Visualization
• Research funds provided by Abu Dhabi Award for Research Excellence (AARE)
ProjectsUAE Innovation Month - Energy Harvesting Device
Role - Designer, Builder, Presenter
for Academic
Feb 11, 2020 - Feb 11, 2020
o Presented an energy harvesting device utilized ferrofluid
o Contains copper coils around the ferrofluid casing which creates magnetic field
o Shaking the prototype would allow the ferrofluid to cut the magnetic field
o Once the ferrofluid cuts the magnetic field. It produces voltage that can be stored in a small battery and utilized later on
o Idea is to expand this to be commercially available all over the world at a much smaller scale and readily available
Global Hybrid Electric Challenge (GHEC - 2019)
Role - Mechanical Engineer, Designer
for Industrial
Oct 1, 2019 - Dec 15, 2019
Assigned to Brake Team
▪ Research and decide the best brakes for hybrid vehicle according to size
▪ Attach and test the drum brakes to the hybrid vehicle
▪ Improve the efficiency of the brakes and allow smooth rotation of the vehicle tires
▪ Decrease the amount of applied force by the driver for application of brakes
Research PapersNumerical Investigation of Turbulence Production Under Two-Phase Flow in a Numerical Simulation of Electrical Submersible Pump Performance
Mar 18, 2022 - ASME Open Journal of Engineering
Investigating the characteristics of gas–liquid two-phase flow in a centrifugal pump is critical for evaluating pump performance. In this study, a numerical simulation was performed to understand the effects of gas–liquid turbulence formation in the impeller channels on the performance of a single-stage centrifugal pump. The focus was on the inlet gas volume fraction (IGVF) at constant flowrate and constant impeller speed on the flow structure in the impeller and the pressure surging characteristics. The correlation between Reynolds shear stress and turbulent kinetic energy on pump performance is shown by examining pressure, velocity, turbulent kinetic energy, and gas volume fraction (GVF). The model verification is verified using the theoretical pump pressure head determined by the manufacturer, which demonstrated adequate uncertainty (μ<5%) for a flowrate of 250 L/min. The results show a 9.41% decrease in wall shear stresses when the in-situ GVF varies between 1% and 10%. Wall shear stresses combined with circulation resulted in a 3.76% decrease in turbulent kinetic energy, while the contribution of turbulence to pump performance degradation is minimal. Other factors such as gas entrapment, impeller inlet blockage due to bubble coalescence, pressure gradient, and bubble size had a much greater impact on performance. The performance decreased dramatically by 26.53% when the GVF increased from 1% to 10%. The proposed flow structure can be further investigated together with the wall shear stress and circulation phenomena, such as vorticity and shear layers in the context of two-phase flow.
Deformation Characteristics on a Solar Powered Endurance Glider Wing by Numerical Simulation
Mar 18, 2022 - ASET - Advances in Science & Engineering Technology 2022
Unmanned Aerial Vehicles (UAV) hold tremendous potential based on their applications involving communication and surveillance missions; however, their operations can be broader with an extended flight duration. The gliders currently on the market are inefficient as their energy consumption is disproportionate to their battery life requiring frequent charging. This paper presents the numerical simulation analysis for the deformation of a solar glider wing under various loads and boundary conditions using ANSYS Finite Element Analysis. This study applies the K-omega SST turbulence model in ANSYS since it is a combination of K-omega and K-epsilon. Among several airfoils the S1223 airfoil was selected as the primary airfoil for the wing design. The loads applied to the wing were tested in an interval between 5 m/s and 30 m/s, considering the maximum flow velocities. The addition of a winglet increases the deformation from 149.28 to 199.22 mm at a free flow speed of 20 m/s and a Reynolds number of 232000. The glider wing proved to be a successful balance in terms of weight and stability. The results showed a decrease in deformation at lower Reynolds numbers according to the aerodynamic analysis.
Design Improvement of the Vertical Axis Wind Turbine with Applied Flaps Through CFD Analysis
Dec 21, 2021 - PLATFORM - A Journal of Engineering
This research aims to optimise VAWT power generation capabilities through the design alteration of blades by the addition of flaps. The application is aimed to be applied in the United Arab Emirates, specifically at Abu Dhabi University campus in Al Ain to replace a margin of the consumed electrical energy (15%) powered by the typical nonrenewable energy means. To study the effects of design alteration, relevant design parameters on the aerodynamic properties of the wind turbine, a typical standard design with standard dimensions were considered and used as a benchmark for comparison. Two aerodynamic simulation software were adopted, namely ANSYS FLUENT and QBlade, while the designs were drawn through AutoCAD. As per the simulation results, the addition of flaps resulted in an
overall increase of 3.11% in power generation. The simulation results were then scaled up using dynamic similarity to obtain a total power consumption of 6 kW for each turbine suggesting that the newly built Al Ain campus would require 43 turbines to cover 15% of the total electricity consumption in a year. The building of a control system for active pitch control was not feasible due to increased complexity.
Effects of Rotation Speeds on Electrical Submersible Pump Performance Under Two-Phase Flow
Dec 11, 2021 - International Conference on Intelligent Manufacturing & Energy Sustainability (ICIMES - 2021)
Electrical submersible pumps (ESP) are a pump classification, which is typically connected to an application of transporting fluids located in submersible elevations into supply pipelines. These pumps type can be found in offshore oil and gas facilities and are often used as transfer pumps for liquefied natural gas (LNG) terminals. In multiphase applications such as in LNG transport, operational challenges from the presence of air pockets and bubbles present a cavitation and degradation risk to the pump components. This paper proposed a computer simulation model using CFD analysis in ANSYS Fluent to study the effects of multiphase flow (gas–liquid flow) on ESP while varying the rotational speed with constant flow rate and inlet gas volume fraction (IGVF). Flow rate and IGVF kept constant with 20 L\min and 1%, respectively, while rotation speed varied by 500, 900, 1500, 2000, and 2500 rpm. The CFD results show that at low rotation speeds a large gas pocket performed at impeller inlet. However, by increasing the rotation speed, this gas pocket collapses to bubbly flow at the impeller inlet which leads to losses in high kinetic energy and concentration of bubbles at the impeller outlet and volute.
CFD Analysis of Vertical Axis Wind Turbine with Winglets
Sep 18, 2021 - Renewable Energy Research and Application (RERA)
The current research illustrates the optimization of Vertical Axis Wind Turbine (VAWT) blades with implementation of added winglets displaying improved self-starting capabilities. The application of improved design is to be utilized in a university campus located in United Arab Emirates (UAE) in order to reduce its margin of consumed electrical energy by 15%. The study is conducted over a mean wind speed value of 5 m/s achieved in a one-year period at a specific altitude of 50 m in the UAE. Two aerodynamic simulation software were adopted, namely ANSYS FLUENT CFD and QBlade, with designs being modelled using AutoCAD. The analytical analysis included some aerodynamic characteristic such as power, lift, and drag coefficients. Through 2D-computational fluid dynamics (CFD), simulation study tested 20 different symmetrical as well as asymmetrical airfoils including the cambered S-0146 with 26.83% higher power output and lower noise amongst the test subjects. Turbine torque for added winglet design results in 4.1% higher compared to the benchmark. The modified design aims to produce at least 2% more power and have an improvement in self-starting of at least 20%. VAWTs tend to have higher potential and sensitivity towards wind direction (no yawing mechanism required) illustrating them as more cost-effective. Future scope includes utilizing wind lens technology to increase the free-stream velocity.
Numerical Investigation of Wall Shear Stress under Single-Phase and Two-Phase Flow in the Electrical Submersible Pump
Aug 4, 2021 - WSEAS Transaction on Fluid Mechanics
The effects of the wall shear stress on an Electrical Submersible Pump (ESP) was investigated in this
paper. A CFD model in ANSYS Fluent was proposed to simulate actual single-phase and two-phase flow. The
bottom hole pressure was minimized by utilizing the artificial lift methods. The flowing fluids in pumps and pipes
causes shear stress on surface interacting. In multiphase flow application pump damages on head degradation as
well as shear stress affects. The K-ω turbulence model and the multiphase Mixture approach with the sliding
technique used to solve the Navier-Stokes equation. To study the effects of gas-liquid (air-water) flow on the ESP
and the pump handle ability, the rotation speeds were varied while the other parameters were kept constant. The
rotation speeds simulated were at 500, 900, 1500, 2000 and 2500 rpm meanwhile the water flow rate and gas flow
rate were kept constant with 20 L/min and 1% fraction, respectively. The results obtained show that as the rotation
speeds were increased, the less concentration of the bubbles were observed, moreover the wall shear stress (WSS)
increases. Although, the wall shear stress in both single-phase and two-phase flow were tend to increase as the
blades length increased, however for the single-phase flow the WSS was found higher in all the simulated
rotational speeds
Effects of Gas Volume Fractions on Electrical Submersible Pump Performance Under Two-Phase Flow
Jun 30, 2021 - PLATFORM - A Journal of Engineering
An Electrical Submersible Pump (ESP) is the most commonly used artificial lifting method in the oil and gas industry through conversion of kinetic energy to pump pressure head; however, issues like gas entrainment and shifting production rates tend to cause ESP pressure degradation. Flow behaviours inside the ESP, such as gas pockets or pressure surging tend to diminish the pump pressure head significantly. Observation of gas-liquid flow in the ESP is challenging due to the compact, sophisticated geometry and highly turbulent flow strucutres. This paper observes two-phase flow in the ESP through CFD simulation, and illustrates its pressure degradation through Air Volume Fraction contours showing formations of gas pockets and recirculation bubbles. This research utilized Mixture Flow as its main two-phase model with 1%, 6% and 10% Gas Volume Fraction (GVF) ratios inside the pump at a constant flow rate of 250 L/min. The results show a clear pump head degradation from 3.062 m to 2.251 m overall. The centrifugal pump under two-phase flow is not able to generate the same amount of pressure head as it normally does due to the bubble point pressure and this decrease in pump pressure head is a potentially unstable behaviour, which is acknowledged as pressure surging.
Numerical Simulation of Lithium-ion battery aging mechanisms and charging-discharging cycle
Mar 13, 2021 - 2021 12th International Renewable Engineering Conference (IREC)
Numerical simulation and modelling of lithium-ion batteries are fundamentally crucial for thermal management systems, and are progressively becoming compelling in its rudimentary understanding on electrochemical performances as well as thermal attributes. This research observes the relationship between various cell units and battery cells using a three-dimensional model through coupling of mass, charge, and energy conservation equations, as well as, the phenomenon of charging-discharging cycles that lead lithium-ion batteries towards an aging process limiting its energy storage as well as power output capabilities. This phenomenon of battery aging along with its repercussions on battery degradation must be contemplated for development of battery design and management. This research utilizes Numerical Simulation using COMSOL for simulation of the battery at various design conditions. A constant charging and discharging of the battery must escalate the temperature inside the lithium-ion battery. Discharging temperatures are higher than charging temperatures; however, the temperature difference between the discharging and charging of the battery decreases with increasing C-rate. Lithium-ion batteries are modelled in COMSOL and are varied across C-rates ranging from 0.5C, 1C, 2C or higher. Aging criteria of battery is fulfilled through a series of 1000 cycles, 5000 cycles, and 10000 cycles for broader range of data. Retrieved results include plots of working voltage and discharge time, voltage and battery capacity as well as temperature plots and contours for better visualization. A complete visualization of temperature and capacity points of the battery will allow in-depth understanding of the aging process and its complications along with a potential solution for battery longevity.
Effects of Near-Wall Vortices on Wall Shear Stress in a Centrifugal Pump Impeller
Mar 5, 2021 - WSEAS Transaction on Fluid Mechanics
Boundary layer separation and vortex formation cause unappealing deterioration of pump pressure
head. The purpose of this research paper is to correlate formation of vortices with near-wall shear stresses
resulting in a loss of pump pressure head. This phenomenon is observed at the centrifugal pump impeller tip at
various flow rates and impeller rotational velocities through CFD (Computational Fluid Dynamic) analysis. This
research paper investigates internal flow in a shrouded centrifugal impeller that is modelled under design flow
rate conditions using ANSYS Fluent as its simulation bases solving built-in Navier-Stokes equation, and 𝑘 − 𝜔
SST turbulence model under steady conditions. Numerical results revealed an increase in wall shear stresses with
increasing flow rate ranging from 314.2 Pa to 595.60 Pa at increments that pulsate per flow rate. Flow
characteristics, such as evolution of vortices and flow turbulence enhance wall shear stresses increasing the wall
skin-friction remarkably leading towards a loss in pressure head. This paper analyzes the vortices and turbulence
in flow structures with regards to their influence upon the impeller performance.
A Review on Electrical Submersible Pump Head Losses and Methods to Analyze Two-Phase Performance Curve
Feb 9, 2021 - WSEAS Transaction on Fluid Mechanics
Electrical submersible pumps (ESP) are referred to as a pump classification whose applications are
based upon transporting fluids from submersible elevations towards a fixed pipeline. Specific ESP pumps are
utilized in offshore oil and gas facilities that are frequently employed in transport of Liquefied Natural Gas
(LNG) terminals. Transport of LNG is a multiphase process that causes operational challenges for ESP due to
presence of air pockets and air bubbles; presenting difficulties, such as cavitation and degradation to pump
components. This performance degradation causes an economic risk to companies as well as a risk to pump
performance capabilities, as it will not be able to pump with the same pressure again. Operational references for
multiphase flow in ESP are limited; thus, this research paper reports multistage pumping, review of
fundamentals, previous experimental as well as modelling work benefitting future literature for a potential
solution. Industries consume power to cope up with the losses associated with pumping two-phase fluids
causing company’s fortune. Preceding experimental work on single along with multiphase flow illustrate a
distinct flow pattern surrounding the area around pump impeller while the pump is in operation. Through
experimental observation, four flow patterns were observed and studied when gas was varied at different flow
rates. Increasing the intake pressure proved to increase pump performance at two-phase flow. Experimental
study of multiphase flow with LNG fluid is expensive; thus, experimental validation is accomplished on a
single stage pump with external intervention of air bubbles to simulate LNG vaporization at fixed pressure and
temperature difference.
Simulation Study of a Solar Design Glider
Nov 8, 2020 - 2020 International Conference on Decision Aid Sciences and Application (DASA)
The ability of an Unmanned Aerial Vehicle (UAV) to fly for an extended period of time is an important issue in today's world for various engineering applications. Taking into account a proper design process, a solar-powered aircraft could potentially fly for inordinate amounts of time continuously. The research aims at designing a light-weight solar endurance glider for an increased flight time by implementing vortex generators across the wingspan for improving its aerodynamics performance. The study utilized ANSYS 18.1 K-Omega SST turbulence simulation technique to successfully simulate the glider at different speeds along with various angle of attacks for aerodynamics optimization and ANSYS static structural module to observe the deformations and stresses on the wingspan. The findings show that the glider should be able to maintain a flight time of at least 6 hours with triangular vortex generators, sharklet winglets and 16 solar panels.
Design of a Solar-powered Endurance Glider with Vortex Generators
Oct 6, 2020 - Renewable Energy Research and Application (RERA)
The research aims at designing a solar endurance glider for an increased flight time. The constraints for design include reduction in weight compared to a typical glider and improving its aerodynamic performance by application of vortex generators on its wingspan. The design of each component was performed through various stages of similitude cases; furthermore, the components, such as solar panels and vortex generators were selected based on a decision matrix design process. This research utilized ANSYS 18.1 K-Omega SST turbulence simulation techniques to successfully simulate the glider at different speeds along with various angle of attacks for aerodynamics optimization. The results show an improvement in lift force from 160 N to 192 N once the vortex generators were installed. 16 solar cells are installed on the glider’s wings providing 57.6 Watts of power. This study faced a limitation on the physical testing using a wind tunnel for validation; therefore, the team relied on CFD simulations verification from published data. This report details the concept of boundary layer, design process, glider simulation as well as glider configuration, such as the wingspan and total length. The glider should be able to maintain a flight time of at least 6 hours with vortex generators and solar panels.
VolunteeringDistributor, Organizer
at Expo 2020
Feb 19, 2019 - Feb 19, 2019
Others
o Coordinated with a team of volunteers for effective organization
o Distributing Food between Labors as well as assigning Seats.
o Helping audience to settle down and providing assistance