Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi – Kudos: Growing the influence of research

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Assessment of 3D corrugated pipes thermal turbulent flow characteristics and enhancement of hydrodynamic performance based on correlation development

Article • Engineering Applications of Computational Fluid Mechanics, March 2026, Taylor & Francis

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of innovative mini-channel heat sinks, influence of flow path geometry and inlet-outlet distribution on hydrothermal performance

Article • International Journal of Thermal Sciences, February 2026, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of hydraulic mechanism of dynamics flow visualization in an axial pump with impeller blades based on novel transient characteristics conditions and vibration techniques

Article • Scientific Reports, January 2026, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Numerical and experimental comparative thermo‐hydraulic flow investigation and augmentation of heat efficiency analysis of 3D tubes based on novel corrugated shape configurations

Article • Energy Sources Part A Recovery Utilization and Environmental Effects, January 2026, Taylor & Francis

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Thermal–Hydraulic Performance Improvement in 3D Pipes: A Parametric Study Employing Various Interrupted Geometries of Passive Methods

Article • Arabian Journal for Science and Engineering, December 2025, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Enhancement of thermohydraulic performance in 3D pipe based on different concavity dimpled surfaces: Numerical and experimental investigation

Article • Case Studies in Thermal Engineering, November 2025, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Effect of varying passive interrupted geometrical techniques to implement novel parametric assessment of improving thermal-hydraulic performance in 3D pipe

Article • Applied Thermal Engineering, August 2025, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Evaluation the low cost of vibration and acoustics techniques based on novel cavitation detecting in axial pumps by varying load conditions and statistical method

Article • Scientific Reports, July 2025, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of hydraulic transient flow and dynamic response performance of axial pump based on novel vibration signals characteristics and numerical analyses

Article • Alexandria Engineering Journal, June 2025, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental novel investigation of diagnostics cavitation in axial pump using vibration and acoustic measurements based on CWT and FFT analyses approaches

Article • Applied Acoustics, June 2025, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Evaluation of Internal Thermal Flow and Heat Performance Augmentation Based on Novel Various Dimple With Insert Twisted Tape Configurations

Article • Heat Transfer, May 2025, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Hydrothermal Performance Enhancement of Minichannel Heat Sink With Inline and Staggered Arrangements of Straight and Wavy Fins

Article • Heat Transfer, May 2025, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Extensive Investigation of Hydrothermal Flow and Heat Performance Improvement in a 3D Tube Based on Varying Concavity Dimple and Corrugation Turbulator Configurations

Article • Heat Transfer, April 2025, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Numerical investigation on effect of various pump rotational speeds on performance of centrifugal pump based on CFD analysis technique

Article • March 2025, World Scientific Pub Co Pte Lt

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analyses of the transient turbulence flow in a 3D impeller axial pump using Novel vibration signals and Inner dynamic simulation techniques

Article • Flow Measurement and Instrumentation, March 2025, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Assessment Improvement of Heat Performance and Hydraulic Thermal Flow in a Three‐Dimensional Tube Equipped With Different Turbulator Corrugated Arrangements

Article • Heat Transfer, February 2025, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Comparative Investigation of Novel Thermo‐Hydraulic Flow Characteristics and Augmentation of Heat Efficiency in 3D Pipes Based on Parametrical Corrugated Shape Configurations

Article • Heat Transfer, January 2025, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental Investigation to Utilize Low-cost Sensors of Early Cavitation Prediction in Axial Pump Based on Acoustic and Vibration Approaches

Article • Journal of Applied Fluid Mechanics, January 2025, Academic World Research

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Improvement of thermohydraulic performance of flow based on novel dimpled tubes on response surface methodology and Taguchi technique-fitted experiment design

Article • International Journal of Thermofluids, January 2025, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Thermo-hydraulics flow investigation and heat performance augmentation evaluation in 3d tube based on novel corrugated, varying insert tape and dimple configurations

Article • Heat and Mass Transfer, January 2025, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
A numerical investigation on the characteristic of flow and enhancement of heat transfer in a 3D pipe, with various dimple parameter configuration

Article • January 2025, American Institute of Physics

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Thermal hydraulic flow investigation and thermal performance enhancement of 3D corrugated tubes based on various geometries and DoE analyses

Article • International Journal on Interactive Design and Manufacturing (IJIDeM), December 2024, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of Hydrothermal Flow and Performance of Heat Transfer in 3D Pipes Based on Varying Dimple Structure Configurations

Article • Heat Transfer, December 2024, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of thermal hydraulic flow and heat transfer augmentation in dimpled tubes based on experimental and CFD investigations

Article • International Journal of Heat and Fluid Flow, December 2024, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of the hydraulic performance heat improvement in 3D pipe by variable of novel twisted tape configurations based on CFD and DoE analysis methods

Article • International Journal of Heat and Fluid Flow, December 2024, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental and numerical the effect of cavitation detection on hydraulic performance of the centrifugal pump based on different geometrical configurations

Article • Journal of Engineering Research, November 2024, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of unsteady internal flow characteristics in axial pump with varying number of blades using computational modelling and vibration techniques

Article • Flow Measurement and Instrumentation, October 2024, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Evaluation of hydraulic thermal flow and heat performance augmentation in a 3D tube fitted with varying concavity dimple turbulator configurations

Article • Heat Transfer, September 2024, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Dynamics simulation in corrugated pipe-based investigations of internal thermo-hydraulic flow and improvement of heat performance under various corrugated geometrical configurations

Article • Journal of Thermal Analysis and Calorimetry, July 2024, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Unsteady behaviour and plane blade angle configurations' effects on pressure fluctuations and internal flow analysis in axial flow pumps

Article • Alexandria Engineering Journal, July 2024, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of thermohydraulic flow and enhancement heat performance in 3D dimple tube based on varying geometrical configurations

Article • Heat Transfer, May 2024, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation evaluation of thermo-hydraulic flow and heat improvement in a 3D circular corrugated pipe based on response surface method and Taguchi analyses

Article • Heat and Mass Transfer, February 2024, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Characterization of Internal Thermo-Hydraulic Flow and Heat Transfer Improvement in a Three-Dimensional Circular Corrugated Tube Surfaces Based on Numerical Simulation and Design of Experiment

Article • January 2024, Authorea, Inc.

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Influence of different geometrical dimple configurations on flow behaviour and thermal performance within a 3D circular pipe

Article • Journal of Thermal Engineering, January 2024, Journal of Thermal Engineering

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Evaluation and Investigation of Hydraulic Performance Characteristics in an Axial Pump Based on CFD and Acoustic Analysis

Article • Processes, January 2024, MDPI AG

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental Comparative Investigations to Evaluate Cavitation Conditions within a Centrifugal Pump Based on Vibration and Acoustic Analyses Techniques

Article • Archive of Mechanical Engineering, May 2023, Polish Academy of Sciences Chancellery

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental Investigation of the Effect of Suction Valve Opening on the Performance and Detection of Cavitation in the Centrifugal Pump Based on Acoustic Analysis Technique

Article • Archive of Mechanical Engineering, May 2023, Polish Academy of Sciences Chancellery

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental Diagnostic of Cavitation Flow in the Centrifugal Pump Under Various Impeller Speeds Based on Acoustic Analysis Method

Article • Archive of Mechanical Engineering, May 2023, Polish Academy of Sciences Chancellery

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Effect of Different Guide Vane Configurations on Flow Field Investigation and Performances of an Axial Pump Based on CFD Analysis and Vibration Investigation

Article • Experimental Techniques, April 2023, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
The influence of different twisted tape inserts configurations on thermo-hydraulic performance and enhancement of heat transfer in the 3D circular tube

Article • Korean Journal of Chemical Engineering, March 2023, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Evaluation of thermal hydraulic flow and enhancement of heat performance in different 3D dimpled tube configurations according to design of experiment analysis

Article • Energy Sources Part A Recovery Utilization and Environmental Effects, February 2023, Taylor & Francis

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of the Main Flow Characteristics Mechanism and Flow Dynamics Within an Axial Flow Pump Based on Different Transient Load Conditions

Article • Iranian Journal of Science and Technology Transactions of Mechanical Engineering, January 2023, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of thermo-hydraulic characteristics of water flow in a circular tube with different shapes of spiral insert

Article • January 2023, American Institute of Physics

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi, basim Freegah
Investigation of the Influence of Varying Operation Configurations on Flow Behaviors Characteristics and Hydraulic Axial-Flow Pump Performance

Article • January 2023, Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (ICST)

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation on the Characteristics of Internal Flow within Three-Dimensional Axial Pump Based on Different Flow Conditions

Article • January 2023, Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (ICST)

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Thermal flow and heat performance analyses in circular pipe using different twisted tape parameters based on design of experiments

Article • Heat Transfer, June 2022, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
The Effect of Different Twisted Tape Inserts Configurations on Fluid Flow Characteristics, Pressure Drop, Thermo-hydraulic Performance and Heat Transfer Enhancement in the 3D Circular Tube

Article • International Journal of Ambient Energy, June 2022, Taylor & Francis

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of the effect of various corrugated pipe configurations on thermo-hydraulic flow and enhancement of heat transfer performance with the development of different correlations

Article • International Journal of Thermal Sciences, June 2022, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Effect of different corrugation interruptions Parameters on thermohydrodynamic characteristics and heat transfer performance of 3D Three-dimensional corrugated tube

Article • Case Studies in Thermal Engineering, April 2022, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Characterization of internal thermohydraulic flow and heat transfer improvement in a three‐dimensional circular corrugated tube surfaces based on numerical simulation and design of experiment

Article • Heat Transfer, March 2022, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Effect of outlet impeller diameter on performance prediction of centrifugal pump under single-phase and cavitation flow conditions

Article • International Journal of Nonlinear Sciences and Numerical Simulation, January 2022, De Gruyter

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation on effects of varying geometrical configurations on thermal hydraulics flow in a 3D corrugated pipe

Article • International Journal of Thermal Sciences, January 2022, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
A numerical study to investigate the effect of turbulators on thermal flow and heat performance of a 3D pipe

Article • Heat Transfer, December 2021, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of thermal flow structure and performance heat transfer in three‐dimensional circular pipe using twisted tape based on Taguchi method analysis

Article • Heat Transfer, November 2021, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis on flow structure and improvement of heat transfer in 3D circular tube with varying axial groove turbulator configurations

Article • Heat Transfer, July 2021, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Flow Field Structure, Characteristics of Thermo-Hydraulic and Heat Transfer Performance Analysis in a Three Dimensions Circular Tube with Different Ball Turbulators Configurations

Article • Arabian Journal for Science and Engineering, July 2021, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of flow pattern, thermohydraulic performance and heat transfer improvement in 3D corrugated circular pipe under varying structure configuration parameters with development different correlations

Article • International Communications in Heat and Mass Transfer, July 2021, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Flow felid and heat transfer enhancement investigations by using a combination of corrugated tubes with a twisted tape within 3D circular tube based on different dimple configurations

Article • Heat Transfer, June 2021, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Numerical investigation on effect of various pump rotational speeds on performance of centrifugal pump based on CFD analysis technique

Article • International Journal of Modeling Simulation and Scientific Computing, June 2021, World Scientific Pub Co Pte Lt

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
The effect of interruptions on thermal characteristics of corrugated tube

Article • Case Studies in Thermal Engineering, June 2021, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Study of the flow characteristics, pressure drop and augmentation of heat performance in a horizontal pipe with and without twisted tape inserts

Article • Case Studies in Thermal Engineering, June 2021, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Influence of Various Types of Twisted Tape inserts on Hydrody-namic, Pressure Drop and Thermal Heat Performance in Heat Ex-changers: A Review Study

Article • Anbar Journal for Engineering Sciences, May 2021, Al-Anbar Journal of Agricultural Sciences

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of the flow, pressure drop characteristics, and augmentation of heat performance in a 3D flow pipe based on different inserts of twisted tape configurations

Article • Heat Transfer, March 2021, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
COMPARISON STUDY BETWEEN THEORETICAL ANALYSIS AND ARTIFICIAL NEURAL NETWORK OF THE CAPILLARY TUBE

Article • Journal of Thermal Engineering, March 2021, Journal of Thermal Engineering

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Flow Pattern Investigation and Thermohydraulic Performance Enhancement in Three-Dimensional Circular Pipe under Varying Corrugation Configurations

Article • Journal of Physics Conference Series, March 2021, Institute of Physics Publishing

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Effect of Concavity Configuration Parameters on Hydrodynamic and Thermal Performance in 3D Circular Pipe using Al2O3 Nanofluid Based on CFD Simulation

Article • Journal of Physics Conference Series, March 2021, Institute of Physics Publishing

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Study the influence of concavity shapes on augmentation of heat‐transfer performance, pressure field, and fluid pattern in three‐dimensional pipe

Article • Heat Transfer, February 2021, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Numerical Investigation of Fluid Flow, Characteristics of Thermal Performance and Enhancement of Heat Transfer of Corrugated Pipes with Various Configurations

Article • Journal of Physics Conference Series, January 2021, Institute of Physics Publishing

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of the Effect of Various Impeller Blade Angles on Characteristic of the Axial Pump with Pressure Fluctuations Based on Time- and Frequency-Domain Investigations

Article • Iranian Journal of Science and Technology Transactions of Mechanical Engineering, September 2020, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Analysis of the flow field, thermal performance, and heat transfer augmentation in circular tube using different dimple geometrical configurations with internal twisted‐tape insert

Article • Heat Transfer, June 2020, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Influence of guide vanes on the flow fields and performance of axial pump under unsteady flow conditions: Numerical study

Article • JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES, June 2020, Universiti Malaysia Pahang Publisher

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental Investigation of the Effect of Air Injection on Performance and Detection of Cavitation in the Centrifugal Pump Based on Vibration Technique

Article • Arabian Journal for Science and Engineering, April 2020, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of the influence of various numbers of impeller blades on internal flow field analysis and the pressure pulsation of an axial pump based on transient flow behavior

Article • Heat Transfer, February 2020, Wiley

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of the three-dimensional structure, pressure drop, and heat transfer characteristics of the thermohydraulic flow in a circular pipe with different twisted-tape geometrical configurations

Article • Journal of Thermal Analysis and Calorimetry, January 2020, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Detection of Cavitation Phenomenon within a Centrifugal Pump Based on Vibration Analysis Technique in both Time and Frequency Domains

Article • Experimental Techniques, January 2020, Springer Science + Business Media

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
EXPERIMENTAL INVESTIGATION OF CAVITATION CHARACTERISTICS WITHIN A CENTRIFUGAL PUMP BASED ON ACOUSTIC ANALYSIS TECHNIQUE

Article • International Journal of Fluid Mechanics Research, January 2020, Begell House

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Numerical Investigations of Transient Flow Characteristic in Axial Flow Pump and Pressure Fluctuation Analysis Based on the CFD Technique

Article • Journal of Engineering Science and Technology Review, December 2019, Eastern Macedonia and Thrace Institute of Technology

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of fluid field analysis, characteristics of pressure drop and improvement of heat transfer in three-dimensional circular corrugated pipes

Article • Journal of Energy Storage, December 2019, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
An Experimental Study on Vibration Signatures for Detecting Incipient Cavitation in Centrifugal Pumps Based on Envelope Spectrum Analysis

Article • Journal of Applied Fluid Mechanics, November 2019, Armenian Green Publishing Co.

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Numerical Investigation of Flow Field Behaviour and Pressure Fluctuations within an Axial Flow Pump under Transient Flow Pattern Based on CFD Analysis Method

Article • Journal of Physics Conference Series, July 2019, Institute of Physics Publishing

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Experimental investigation of using kerosene-biodiesel blend as an alternative fuel in diesel engines

Article • Journal of Physics Conference Series, July 2019, Institute of Physics Publishing

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Investigation of effect of pump rotational speed on performance and detection of cavitation within a centrifugal pump using vibration analysis

Article • Heliyon, June 2019, Elsevier

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Effects of Different Turbulence Models on Three-Dimensional Unsteady Cavitating Flows in the Centrifugal Pump and Performance Prediction

Article • International Journal of Nonlinear Sciences and Numerical Simulation, May 2019, De Gruyter

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi
Monitoring the Performance of Centrifugal Pump under Single-Phase and Cavitation Condition: A CFD Analysis of the Number of Impeller Blades

Article • Journal of Applied Fluid Mechanics, March 2019, Armenian Green Publishing Co.

Asst. Prof. Dr. Ahmed Ramadhan Al-Obaidi