Mustafa Al-Dulaimi

• Doctor of Engineering
• Lecturer at Al- Esraa University College

This work investigates the heat transfer inside a square duct experimentally in the presence of detached rectangular and triangular turbulence generators. The effect of the ratio of turbulence generators to the duct height (blocking ratio) is investigated for the values of 0.1, 0.15, and 0.2 for Reynolds number 15413. The results showed that turbul...

In this paper, the effect of using different configurations of absorber plate, including one line finned flat absorber and two lines finned absorber plate, on the thermal performance of a flat plate – double passing solar air heater was investigated experimentally. L- shape fins are soldered on the absorber plate to roughen the absorber plate and g...

In this paper, the effect of using different configurations of absorber plate, including one line finned flat absorber and two lines finned absorber plate, on the thermal performance of a flat plate – double passing solar air heater was investigated experimentally. L- shape fins are soldered on the absorber plate to roughen the absorber plate and g...

The aim of this work is to explore the thermal performance of a tracked tubular solar still (TSS) with a parabolic trough concentrator in Baghdad (33.27° N, 44.37° E) in September 2022. The present tubular still is distinguished by its hexagonal glass cover. The effect of integrating the TSS with a heat pipe, the still tilt angle (10°, 15°), and th...

This paper numerically and theoretically investigates the optical and thermal performance of a parabolic trough collector PTC system. Many numerical simulations and theoretical analyses are conducted to demonstrate the influence of the receiver geometry and shifting from the focal position on the optical performance. The examined receiver geometrie...

This paper investigates numerically the influence of detached square vortex generator (VGs) on the heat transfer and pressure drop inside a square duct. Reynolds number is fixed at 5000. The geometrical parameters in this investigation are: i) The blocking ratios are 0.1, 0.15 and 0.2), ii) Vortex generator numbers are 1, 2, and 3), iii) Attack ang...

In this study, the optical and thermal performance of a Parabolic Trough Collector PTC system is investigated theoretically. A series of numerical simulations and theoretical analysis has been conducted to investigate the effect of the receiver geometry and location relative to the focal line on its optical performance. The examined receiver geomet...

An Air Conditioning Unit with magnetic field and different tubes was designed, fabricated and evaluated in this study. The Effect of magnetic field and different types of tubes on the performance of Air Conditioning was studied experimentally. A testing system of Air Conditioning Unit was developed as the test rig. The modified tubes as a straight...

Cooling towers, wherein water and air are contacted directly with each other, are specialized heat exchangers. These open-topped, tall, cubical or cylindrical shaped are responsible for reducing the temperature of the water that generated from the industrial or HVAC systems. The performance of the forced draft wet cooling tower is investigated expe...

Flow and heat transfer are simulated numerically in a 3-dimensional square duct supplied with circular turbulators for different values of the turbulator height to the duct height (Blocking ratio BR). The investigated blocking ratios of these circular obstacles are 0.1, 0.15 and 0.2. Reynolds number for all cases is fixed at 5477. Top and bottom fa...

This study investigates the pressure drop in horizontal pipes packed with large particles that result in small pipe-to-particle diameter ratio both experimentally and numerically. Two horizontal pipes of 0.1905 and 0.0254 m ID filled with cylindrical or spherical particles are used to collect the experimental data for single and two-phase flows. Th...

Application of gear in the heavy industry is extremely challenging with the exposure to high load and high speed during transmission. These exposures produce an unfavourable condition in the gear operation as they induce crack. Induced crack might not only cause machine failures but catastrophic incidents that cost lives. Provided that the crack do...

Application of gear in the heavy industry is extremely challenging with the exposure to high load and high speed during transmission. These exposures produce an unfavourable condition in the gear operation as they induce crack. Induced crack might not only cause machine failures but catastrophic incidents that cost lives. Provided that the crack do...

Fibre reinforced polymer composite have been utilised in applications that require high strength-to-weight ratio and durability like automotive and spacecraft components. The literatures has indicated that there is a gap of knowledge in fatigue failure mechanism, and reliable prediction of fatigue life for glass and carbon fibre laminates. This stu...

Fibre reinforced polymer composite have been utilised in applications that require high strength-to-weight ratio and durability like automotive and spacecraft components. The literatures has indicated that there is a gap of knowledge in fatigue failure mechanism, and reliable prediction of fatigue life for glass and carbon fibre laminates. This stu...

This research represents an experimental and numerical tensile study to investigate the effect of adding epoxy and both sides of two specimens on the shear stress at which the failure of the bond occurs. Also, the effect of the of epoxy bond arrangements on the toughness and the area of contact were investigated. Fifteen specimens in three arrangem...

Dynamic behavior of a copper pipe conveying fluid at different fluid temperatures is investigated experimentally. Three types of supports are used, which are simply support - simply support, fixed – fixed support and fixed – free support. The effect of the support's types on the frequency and the amplitude of vibration for the pipe conveying the fl...

This paper presents an experimental and numerical investigation of the thermal performance of natural draft wet cooling tower (NDWCT). The experimental investigation is carried out under natural draft condition and forced draft condition created by an axial fan. The operational parameters considered in this study are the thickness of the fill (10 a...

The flow structure of a single-and two-phase jet from a 10 mm nozzle was investigated experimentally and numerically. The measurements were conducted for Reynolds number range of 10007-31561. The velocity was measured at different radial and axial locations from the exit of the nozzle. The distances of the axial locations are 0, 2, 4, 6, 8 cm. The...

The performance of a forced draft wet cooling tower was investigated experimentally and the calculation was performed by applying second law of thermodynamics (exergy analysis). The mathematical model was developed by using engineering equation solver (EES) software. The results show that the chemical exergy of air increases from the bottom to th...

The performance of a forced draft wet cooling tower was investigated experimentally and the calculation was performed by appl ying second law of thermodynamics (exergy analysis). The mathematical model was developed by using engineering equation solver (EES) software. The results show that the chemical exergy of air increases from the bottom to the...

Heat transfer between a heated flat plate and normal impinging gas-solid two-phase jet flow was investigated. A single jet from a nozzle of 10 mm diameter at nozzle-to-plate distance/nozzle diameter ratio in the range of 2–8 was used. Natural sand particles with average diameters of 220, 350, and 550 µm were used as a solid phase. The effects of pa...

Heat transfer between a heated flat plate and normal impinging gas-solid two-phase jet flow has been investigated. A single jet from a nozzle of 10 mm diameter at nozzle-to-plate distance/nozzle diameter in the range of 2 to 8 was used. Natural sand particles with average diameters of 220, 350 and 550 µm are used as a solid phase. The effect of par...