Rafi M. Qasim

ORCID: 0000-0002-1882-0766
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Hydraulic flow and structures
  • Hydrology and Sediment Transport Processes
  • Water Systems and Optimization
  • Fluid Dynamics and Vibration Analysis
  • Fluid Dynamics and Turbulent Flows
  • Geotechnical Engineering and Soil Stabilization
  • Fluid dynamics and aerodynamics studies
  • Flood Risk Assessment and Management
  • Water Quality and Pollution Assessment
  • Geotechnical Engineering and Underground Structures
  • Wind and Air Flow Studies
  • Geotechnical Engineering and Soil Mechanics
  • Irrigation Practices and Water Management
  • Flow Measurement and Analysis
  • Dam Engineering and Safety
  • Civil and Geotechnical Engineering Research
  • Groundwater and Watershed Analysis
  • Fish Biology and Ecology Studies
  • Fluid Dynamics and Mixing
  • Hydrology and Watershed Management Studies
  • Experimental and Theoretical Physics Studies
  • Geotechnical and construction materials studies
  • Hydraulic and Pneumatic Systems
  • Icing and De-icing Technologies
  • Vibration and Dynamic Analysis

Southern Technical University
2018-2024

The problem of flow around the cylinder represents a challenge related to variation in turbulence that surrounds cylinder; this will rise dramatically, especially when is nearby transverse vane. current work concentrates on vane effect field cylinder. ANSYS fluent software utilized for numerical analysis. hydraulic variables included investigation are static pressure, pressure coefficient, velocity -direction, tangential velocity, turbulent intensity, eddy viscosity, kinetic energy, and...

10.37934/arfmts.128.1.151168 article EN Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2025-03-10

A three-dimensional analysis of a hydrodynamic field over common zone hydraulic structure is studied numerically. Here, the produced from water stream interaction and comes several waterways. In this study, three scenarios are presented. first scenario, one waterway while in second two waterways third scenario each includes outlet. Three different flow rates used to investigate patterns zone. simulation, Autodesk 2024 has been employed perform simulation. Model adopted for simulation...

10.37934/arfmts.131.1.189218 article EN Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2025-05-10

Discordance and concordance play a significant role in the hydraulic response for flume, open channel, structure, flow field measurement. Bed discordance bed are regarded as common problems channels. is dominant one, which could have an effect on structure that constructed inside channel. This paper deals with impact of flume characteristics at weir-gate downstream regime. Four configurations different lengths heights adopted here to investigate these characteristics. In addition, one...

10.28991/hij-2022-03-03-09 article EN cc-by HighTech and Innovation Journal 2022-09-01

The Spalart-Allmaras turbulence model is used to study the flow patterns around a semi-circular cylinder surrounded by water in two dimensions with various angles of strike owing rotating an angle. rotation angle ranges from zero 360° and ANSYS Fluent software employed implement required simulation. determine velocity vector, contours, pressure contours. Moreover, this turbulent calculate three different non-dimensional parameters, drag coefficient, lift skin friction factors. Two Reynolds...

10.37934/arfmts.112.2.191213 article EN cc-by-nc Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2024-01-20

Experimental investigations are carried out to study the physics of flow that passes weir-gate hydraulic structure and encounters obstruction with or without installation downstream opening. This approaches comparison between two different options; first option deals free condition while second submerged condition. Various cases performed considering hydraulics variables dimensions evaluate existence openings. Overall pattern is more sensitive presence at region than in its absence. The...

10.13111/2066-8201.2020.12.3.13 article EN cc-by-nc-nd INCAS BULLETIN 2020-09-01

A set of laboratory experiments were conducted to study the effect using a Strip Guide Flow Panel device reduce scour process effects around bridge pier. Three cylindrical piers different diameter values and three devices used. Every is simulated by two arms connected together at one their edges right angle. The length every arm selected in way cover pier diameter. was mounted on upstream face corresponding elevation adjacent flume bed. uniform sized sediment used as bed material. Based...

10.22363/2312-8143-2019-20-3-229-235 article EN cc-by-nc RUDN Journal of Engineering Researches 2019-12-15

Composite hydraulic structure is widely used in irrigation system which consists of two parts. The first part responsible for overflow regime and represented by a weir, whereas the second underflow gate. Both elements play significant role to control, measured, divert flow. So it dominates regimes open channel or river with high responsibility accuracy. target this study investigate effect composite installation at various inclination angles (from 45-135 degree) flume bed, horizontal, adopt...

10.37394/232013.2020.15.5 article EN WSEAS TRANSACTIONS ON FLUID MECHANICS 2020-02-21

The flow pattern around the cylinder body is a very serious problem and this may become more sensitive, when we place vane neighboring to cylinder. present paper deals with impact on To investigate ANSYS fluent software employed in order achieve two dimensional numerical analysis. Here, Reynolds Average Navier Stokes model adopted. investigation comprises following hydraulic variables, like eddy viscosity, turbulent intensity, kinetic energy, dissipation rate, velocity profile, static...

10.13111/2066-8201.2021.13.3.11 article EN cc-by-nc-nd INCAS BULLETIN 2021-09-04

Abstract Many structures are subjected to torsional and horizontal loads in addition vertical load lead that the foundation of these may be collapsed. The proposed model for pile groups consists an elastic beam-column represents pile, rigid cap nonlinear spring simulate soil. In direction, p-y curve method is used calculate subgrade reaction soil while τ-0 transfer direction. effect group coupling considered by p multiplier head. A parametric study carried out under combined action loads....

10.1088/1742-6596/1773/1/012032 article EN Journal of Physics Conference Series 2021-02-01

The hydrodynamic pattern, which surrounds the pier near a splitter that has T-shape, is investigated by adopting numerical method and using ANSYS Fluent Software to achieve computation.The essential objective of this paper refers revealing behavior field around due existence upstream plate.The T-splitter plate not been used in previous works for controlling flow cylinder body.The main assumptions adopted solving problem are incompressible, steady, laminar flow.Reynolds number values taken...

10.12913/22998624/154795 article EN cc-by Advances in Science and Technology – Research Journal 2022-10-27


 This study presents a model to investigate the behavior of single-phase turbulent flow at low moderate Reynolds number water through vertical pipe (2D) contour analysis. The constructed based on governing equations an incompressible Average Navier-Stokes (RANS) with (k-ε) method observe parametric determinations such as velocity profile, static pressure kinetic energy consumption, and turbulence shear wall flows. is used three velocities values obtained (0.087, 0.105, 0.123 m/s)...

10.21303/2461-4262.2020.001538 article EN EUREKA Physics and Engineering 2020-11-30

Spatiotemporal variation analysis of water quality in the river is very vital for resources protection and sustainable consumption. In this study, Multivariate statistical methods, i.e., Principal Component Analysis (PCA), Canonical Correlation (CCA) Multi Recreation (MRA) were used to interpret data matrix over a period five years (2015–2019) Lower Zab River. The results from PCA showed high positive correlation between total hardness sulphate (SO4) at 95% confidence level (0.934)...

10.37394/232015.2020.16.49 article EN WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT 2020-05-22

The present analysis focuses on the investigation of two-dimensional flow passing a bridge pier nearby splitter plate in different regimes laminar flow. is T-shaped and two cases have been studied based form relative to pier. implemented for steady incompressible water an open channel. current study deals with velocity vectors, drag coefficients, lift skin friction. vector gave good indicator about separation process dissipation, which occurs at before occurrence these processes front face...

10.22630/srees.4548 article EN cc-by-nc Scientific Review Engineering and Environmental Sciences (SREES) 2023-05-10

This research examines the behavior of a weir-gate hydraulic structure when subjected to presence or absence side obstacle.The study focuses on two scenarios, free flow and submerged flow, employs obstacle with dimensions 15 cm in height, 30 length, 1 thickness, located downstream from structure.A correlation matrix is derived using measured calculated data establish relationship between various variables, both dimensional non-dimensional.The results show clear Froude number discharge...

10.18280/i2m.220604 article EN cc-by Instrumentation Mesure Métrologie 2023-12-27

This paper investigates experimentally the changing of a hydraulic characteristic combined structure owing to existence dike structure.Different models structures are used with rectangular gates and weirs, respectively.Also, location is considered.A located upstream, downstream, on both sides structure.Discharge quantity, average downstream water depth, discharge coefficient, Reynolds number adopted describe alteration in behavior structure.While relation between upstream Froude number, as...

10.18280/mmep.110208 article EN cc-by Mathematical Modelling and Engineering Problems 2024-02-27

A composite hydraulic structure is used to solve the problems of sediment and floating materials, respectively. pier (obstacle) at downstream increase water depth, decrease flow velocity, dissipate energy. The paper deals with effect single double piers on characteristics structure. Circular square shapes are adopted in study different spacing measured from experiments reveal how level changed due existence pier/piers as compared without pier/piers. statistical data which collected shows...

10.22337/2587-9618-2024-20-2-46-59 article EN cc-by-nc-sa International Journal for Computational Civil and Structural Engineering 2024-06-28

10.5935/jetia.v10i49.1004 article EN cc-by ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA) 2024-01-01

The flow around an obstacle represents a challenge in fluid mechanics problems and practice. So, it is significant to investigate the hydraulic behaviour response of which encounters suddenly. target present paper deal with investigati

10.4108/eai.7-9-2021.2315298 article EN Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey 2022-01-01

Water flow around cylinder represents a noticeable problem in fluid mechanics. The computational dynamic is employed to study numerically the turbulent field without vane and with respectively. configuration direction are considered numerical stu

10.4108/eai.7-9-2021.2315181 article EN Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey 2022-01-01

River and open channel flow measurement is regarded as an important element in improving water system management. An experimental analysis a laboratory flume has been executed to obtain formulas which can be used predict the discharge quantity crosses over sharp crested weir under gate composite structure tool of measurement. These are applied for free condition. Different configurations have used. regular irregular shapes. The derivation equation based on dimensional employed analyze...

10.18280/i2m.210103 article EN Instrumentation Mesure Métrologie 2022-02-28

A common design practice for dynamic loading assumes the frame fixed at their bases.In reality, supporting soil medium allows movement to some extent due its property deform.This may decrease overall stiffness of structural system and increase natural period system.The effect flexibility is suggested be accounted through consideration springs which have specified half space.Results show that response structure vibrations applied load highly dependent on type method modeling interaction.The...

10.17265/2162-5263/2015.05.004 article EN cc-by-nc Journal of Environmental Science and Engineering B 2015-05-28

The flow over and under weir-gate structure that is placed inside a flume with obstacles downstream studied experimentally.The distance between the first obstacle as well spacing are both considered constant.The goal of present research paper to characterize interference emerged square-shaped obstacle.The computation results show have major role on dominating trend several hydraulic variables.For instance, relation discharge coefficient upstream Froude number adverse number.The increase...

10.17683/ijomam/issue9.11 article EN International Journal of Mechatronics and Applied Mechanics 2021-07-21
Coming Soon ...