Bachelor's

Nov 1, 2011 - Jul 5, 2015

Bachelors Degree in Mechanical Engineering , Tikrit University

Master Degree

Sep 5, 2016 - May 2, 2019

Master degree in Mechanical Engineering , Selcuk University Turkey

Finite element analysis of prosthetic running blades with different designs (I, II) using epoxy composite material technology

Apr 15, 2025

Journal International Journal of Mechanical and Thermal Engineering

DOI https://www.doi.org/10.22271/27078043.2025.v6.i1b.82

The prosthesis is a prosthetic device that replaces a missing part of the body, or parts. The artificial limbs of many people use different applications, this report was compiled from the comparative studies of engineering design where the dimensions in OSSUR were used for two different designs and then their design (model I and model II) using the SolidWorks program, and then the application of modelling the finite elements method (FEM) within theANSYS18 solver, in addition to applying the boundary conditions For models that are in line with the living reality of the different applications for them to reach accurate results that are applicable, where the comparison will be made to reach the nominal design that has the conditions for acceptance.

Read Publication

Circular perforations on vertically sinusoidal wave form plate fin heat sinks for laminar natural convection heat dissipation

Oct 16, 2024

Journal International Journal of Thermal Sciences

DOI https://doi.org/10.1016/j.ijthermalsci.2024.109470

Aluminum straight plate fin heat sink geometry was modified with vertical sinusoidal wave profile on the fins for different amplitudes. The heat sink fins were further modified by means of circular perforations with increasing diameters. Fully experimental examination was adopted for conducting the work. The heat sinks were assessed on a heat source to see the effect of the modifications on the heat sink fins in terms of heat sink base plate temperature. Heat source was controlled so that the natural convection heat transfer remained in the laminar regime. The experimental methodology elaborately described to share practical experiences on implicit nature and critical points of the commonly used approaches. Up to 40 W heat dissipation is realized with the heat sinks while 2.5 × 106 Rayleigh number value bases a limit for the natural convection potential. The perforations on the fins reduce the performance difference between different wave form amplitudes towards the favorable direction. The 3 mm and 6 mm perforations on the sinusoidally wavy fin profile with 1 mm amplitude value result the least base plate surface temperatures. Therefore, when the cost is justified by the performance improvement, perforations on plate fin heat sinks are recommended in terms of passive cooling applications. In terms of thermal application, present results indicate thermal performance increase of plate fin heat sinks by perforations on the fin surfaces. The experiences throughout the experimental process in the present work reveal unintuitive, implicit, and covert phenomena about the insulation box design and heating power measurement, which are elucidated in the present content. Insulation box can function as an additional heat dissipation surface at the proximity of the heat sink based on the box design. The voltage measurement approach, which is shallowly mentioned in the literature most of the time, can have an effect on the absolute values of the heat dissipation value.

Read Publication

Natural convection from perforated vertical fins with different hole diameters

Dec 31, 2020

Journal International Journal of Energy Applications and Technologies

Issue 4

Volume 7

Natural convection is a physical mechanism that is mostly benefited in cooling of electronics. Due to the variety of the geometrical and operational parameters, industrial and scientific studies are continuing for better performance. One of the focuses is on perforations of heat sink fins as a passive flow control technique. This work experimentally investigates a sinusoidal wavy fin heat sink after fins were perforated with two different hole diameters. Heat sink was heated by using an electrical resistance for six different heating powers. The temperature at the heater-heat sink interface was measured with the aid of four thermocouples. Transient and steady temperature values were measured and then recorded by means of a data-logger. The details of the experimental setup are given alongside of visuals. It is desired to state some assessment and evaluations about the experimental setup. Related literature studies are also summarized in the introduction section. Heat transfer, Rayleigh and Nusselt numbers were calculated and compared with each other and parameters by means of 2D plot graphics. The time for reaching steady state is changing between 1.5 to 2 hours. Average wall temperature changes linearly with heating power. Average wall temperature values are between 300 and 370 Kelvin. Nusselt number increases with increasing Rayleigh number as expected. While Rayleigh number changes between 500,000 to 5,000,000 Nusselt number approximately increases from 18 to 25. 3 mm perforations yield better results in terms of Nusselt numbers, which means better thermal convection. Surface temperature trends are similar according to power increments. Considering experimental uncertainty, general performances of the two heat sinks are found similar. Some remarks for the future work are given in conclusion section.

Read Publication