ORCID Profile
0000-0002-0904-198X
Current Organisation
UNSW Sydney
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Publisher: Springer Science and Business Media LLC
Date: 18-01-2018
Publisher: Elsevier BV
Date: 04-2019
Publisher: Elsevier BV
Date: 11-2017
Publisher: MDPI AG
Date: 19-11-2014
DOI: 10.3390/E16116116
Publisher: Elsevier BV
Date: 03-2016
Publisher: Elsevier BV
Date: 04-2016
Publisher: Springer Science and Business Media LLC
Date: 26-05-2022
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 2020
Publisher: Elsevier BV
Date: 10-2016
Publisher: Elsevier BV
Date: 02-2018
Publisher: National Library of Serbia
Date: 2021
DOI: 10.2298/TSCI21S2263G
Abstract: Heat flux enhancement due to utilization of graphene, graphene nanoplatelets, and graphene oxides in water/ethylene-glycol based nanofluids over an inclined permeable cylinder is focused in the present study. The governing PDE are reformulated into non-linear ODE by applying similarity expressions. A shooting procedure is opted to reformulate the equations into boundary value problems which are solved by employing a numerical finite difference code in MATLAB. The effects of constructive parameters toward the model on non-dimensional velocity and temperature dissemination, reduced skin friction coefficient and reduced Nusselt number are graphically reported and discussed in details. It is observed that by in-creasing the thermal stratification and inclination angle, the temperature profile and Nusselt number for the selected nanofluids will be decreased.
Publisher: Hindawi Limited
Date: 2014
DOI: 10.1155/2014/369593
Abstract: Thermal characteristics of turbulent nanofluid flow in a rectangular pipe have been investigated numerically. The continuity, momentum, and energy equations were solved by means of a finite volume method (FVM). The symmetrical rectangular channel is heated at the top and bottom at a constant heat flux while the sides walls are insulated. Four different types of nanoparticles Al 2 O 3 , ZnO, CuO, and SiO 2 at different volume fractions of nanofluids in the range of 1% to 5% are considered in the present investigation. In this paper, effect of different Reynolds numbers in the range of 5000 Re 25000 on heat transfer characteristics of nanofluids flowing through the channel is investigated. The numerical results indicate that SiO 2 -water has the highest Nusselt number compared to other nanofluids while it has the lowest heat transfer coefficient due to low thermal conductivity. The Nusselt number increases with the increase of the Reynolds number and the volume fraction of nanoparticles. The results of simulation show a good agreement with the existing experimental correlations.
Publisher: MDPI AG
Date: 09-09-2021
DOI: 10.3390/MAGNETOCHEMISTRY7090123
Abstract: Magnetic soft materials (MSMs) and magnetic shape memory polymers (MSMPs) have been some of the most intensely investigated newly developed material types in the last decade, thanks to the great and versatile potential of their innovative characteristic behaviors such as remote and nearly heatless shape transformation in the case of MSMs. With regard to a number of properties such as shape recovery ratio, manufacturability, cost or programming potential, MSMs and MSMPs may exceed conventional shape memory materials such as shape memory alloys or shape memory polymers. Nevertheless, MSMs and MSMPs have not yet fully touched their scientific-industrial potential, basically due to the lack of detailed knowledge on various aspects of their constitutive response. Therefore, MSMs and MSMPs have been developed slowly but their importance will undoubtedly increase in the near future. This review emphasizes the development of MSMs and MSMPs with a specific focus on the role of the magnetic particles which affect the shape memory recovery and programming behavior of these materials. In addition, the synthesis and application of these materials are addressed.
Publisher: Elsevier BV
Date: 08-2020
Publisher: Springer Science and Business Media LLC
Date: 18-09-2017
Publisher: Elsevier BV
Date: 11-2015
Publisher: Elsevier BV
Date: 12-2015
Publisher: Elsevier BV
Date: 07-2016
Publisher: CRC Press
Date: 18-06-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5RA17326D
Abstract: This study describes how various loadings of two ions with different size and charge, such as silver and tantalum, can affect the mechanical and biological properties of calcium silicate (CS).
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA01525A
Abstract: A nitrogen doped and activated material with spongy-like structure containing a low cost carbon derived from the waste agricultural material and graphene oxide is synthesized via facile thermal treatment for supercapacitor applications.
Publisher: Informa UK Limited
Date: 29-05-2015
Publisher: Elsevier BV
Date: 05-2019
Publisher: Hindawi Limited
Date: 2014
DOI: 10.1155/2014/504601
Abstract: In this study an expression for soot absorption coefficient is introduced to extend the weighted-sum-of-gray gases data to the furnace medium containing gas-soot mixture in a utility boiler 150 MWe. Heat transfer and temperature distribution of walls and within the furnace space are predicted by zone method technique. Analyses have been done considering both cases of presence and absence of soot particles at 100% load. To validate the proposed soot absorption coefficient, the expression is coupled with the Taylor and Foster's data as well as Truelove's data for CO 2 -H 2 O mixture and the total emissivities are calculated and compared with the Truelove's parameters for 3-term and 4-term gray gases plus two soot absorption coefficients. In addition, some experiments were conducted at 100% and 75% loads to measure furnace exit gas temperature as well as the rate of steam production. The predicted results show good agreement with the measured data at the power plant site.
Publisher: Elsevier BV
Date: 2015
DOI: 10.1016/J.CARBPOL.2014.08.047
Abstract: The requirement for high quality pulps which are widely used in paper industries has increased the demand for pulp refining (beating) process. Pulp refining is a promising approach to improve the pulp quality by changing the fiber characteristics. The ersity of research on the effect of refining on fiber properties which is due to the different pulp sources, pulp consistency and refining equipment has interested us to provide a review on the studies over the last decade. In this article, the influence of pulp refining on structural properties i.e., fibrillations, fine formation, fiber length, fiber curl, crystallinity and distribution of surface chemical compositions is reviewed. The effect of pulp refining on electrokinetic properties of fiber e.g., surface and total charges of pulps is discussed. In addition, an overview of different refining theories, refiners as well as some tests for assessing the pulp refining is presented.
Publisher: Elsevier BV
Date: 12-2017
Publisher: IOP Publishing
Date: 19-12-2018
Publisher: Informa UK Limited
Date: 20-06-2015
Publisher: Elsevier BV
Date: 08-2015
Publisher: Elsevier BV
Date: 08-2016
Publisher: Hindawi Limited
Date: 2015
DOI: 10.1155/2015/291657
Abstract: An experimental as well as numerical investigation was conducted on the melting/solidification processes of a stationary phase change material (PCM) in a shell around a finned-tube heat exchanger system. The PCM was stored in the horizontal annular space between a shell and finned-tube where distilled water was employed as the heat transfer fluid (HTF). The focus of this study was on the behavior of PCM for storage (charging or melting) and removal (discharging or solidification), as well as the effect of flow rate on the charged and discharged solar thermal energy. The impact of the Reynolds number was determined and the results were compared with each other to reveal the changes in amount of stored thermal energy with the variation of heat transfer fluid flow rates. The results showed that, by increasing the Reynolds number from 1000 to 2000, the total melting time decreases by 58%. The process of solidification also will speed up with increasing Reynolds number in the discharging process. The results also indicated that the fluctuation of gradient temperature decreased and became smooth with increasing Reynolds number. As a result, by increasing the Reynolds number in the charging process, the theoretical efficiency rises.
Publisher: Elsevier BV
Date: 10-2016
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 10-2021
Publisher: MDPI AG
Date: 16-09-2021
DOI: 10.3390/MI12091113
Abstract: In industrial processes, the microtechnology concept refers to the operation of small devices that integrate the elements of operational and reaction units to save energy and space. The advancement of knowledge in the field of microfluidics has resulted in fabricating devices with different applications in micro and nanoscales. Micro- and nano-devices can provide energy-efficient systems due to their high thermal performance. Fluid flow in microchannels and microstructures has been widely considered by researchers in the last two decades. In this paper, a review study on fluid flow within microstructures is performed. The present study aims to present the results obtained in previous studies on this type of system. First, different types of flows in microchannels are examined. The present article will then review previous articles and present a general summary in each section. Then, the multi-phase flows inside the microchannels are discussed, and the flows inside the micropumps, microturbines, and micromixers are evaluated. According to the literature review, it is found that the use of microstructures enhances energy efficiency. The results of previous investigations revealed that the use of nanofluids as a working fluid in microstructures improves energy efficiency. Previous studies have demonstrated special attention to the design aspects of microchannels and micro-devices compared to other design strategies to improve their performance. Finally, general concluding remarks are presented, and the existing challenges in the use of these devices and suggestions for future investigations are presented.
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 03-2018
DOI: 10.1016/J.CARBPOL.2018.01.002
Abstract: Nanocrystalline cellulose (NCC) a nature-based material, has gained significant attentions for its unique properties. The present study aims to investigate the flow behavior of cellulosic suspension containing non-wood pulp fibers and NCC, by means of rheological and pressure drop measurements. The NCC s le was prepared by sulfuric acid hydrolysis from Acacia mangium fibers. The rheological properties of kenaf/NCC suspensions were studied using viscosity and yield stress measurements. The pressure drop properties of the suspension flow were studied with respect to variation in flow velocity (0.4 m/s-3.6 m/s) and the NCC concentration (70 mg/l and 150 mg/l). The pressure drop results showed that the pulp suspension containing 150 mg/l NCC had higher drag reduction than kenaf suspension alone. The present insights into the flow of pulp/NCC suspension provide a new data and promote the application of NCC in industries.
Publisher: IOP Publishing
Date: 06-2017
Publisher: Springer Science and Business Media LLC
Date: 08-11-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA17687E
Abstract: A one-pot microwave-assisted method for synthesis of multi-walled carbon nanotubes functionalized with hexylamine as an oil based coolant for transformers.
Publisher: Elsevier BV
Date: 07-2016
Publisher: Elsevier BV
Date: 08-2015
No related grants have been discovered for Hooman Yarmand.