National University of Sciences and Technology

www.nust.edu.pk
Islamabad, Pakistan

National University of science and Technology, commonly known by its acronym NUST, is a public research university in Pakistan. Initially, NUST was founded by the government of Pakistan in 1981 to train members of the Pakistani Armed Forces after merging established military institutes and colleges. The university was chartered in 1993. NUST is a multi-school university with its headquarters formerly located in Rawalpindi, Pakistan. In 2008, the headquarters were shifted to the newly constructed campus in Islamabad. Other campuses are situated in Karachi, Rawalpindi and Risalpur.In 2014 the university stood at 129th rank in Asian universities in the field of engineering and technology as ranked by QS World ranking. The world university rankings' results by QS World University Rankings for the session 2014-15 published on September 17, 2014 show that NUST has maintained its name in the list of Top 500 universities. This year, NUST has also been ranked 398th in the field of Engineering and Technology among the world's top universities that participated. Scimago Institution Rankings has ranked NUST 280th in the world for Innovative Knowledge and 358th globally for Technological Impact. The university is co-educational, established to promote higher scientific education in the country especially in the field of science and technology. It offers undergraduate and postgraduate degrees leading to Ph.D in the fields of engineering, information technology, medical science, and management science. NUST is affiliated with Pakistan Engineering Council and Higher Education Commission Pakistan. Wikipedia.

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Akbar N.S.,National University of Sciences and Technology
Entropy | Year: 2015

The purpose of the current investigation was to discuss the entropy generation analysis for a carbon nanotube (CNT) suspension nanofluid in a plumb duct with peristalsis. The entropy generation number due to heat transfer and fluid friction is formulated. The velocity and temperature distributions across the tube are presented along with pressure attributes. Exact analytical solution for velocity and temperature profile are obtained. It is found that the entropy generation number attains high values in the region close to the walls of the tube, while it attains low values near the center of the tube. © 2015 by the author.


Patent
Electronics, Telecommunications Research Institute, National University of Sciences and Technology | Date: 2016-04-04

An apparatus and a method for displaying a panoramic image using a look-up table (LUT) are disclosed, including generating an LUT may include determining first geometric correction information to transform an input domain pixel coordinate system of an input image to a panorama domain pixel coordinate system of a panoramic image, determining second geometric correction information to transform an output domain pixel coordinate system of an output image of the panoramic image to the panorama domain pixel coordinate system of the panoramic image, determining third geometric correction information to transform the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image based on the first geometric correction information and second geometric correction information, and generating an LUT that maps the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image.


Mustafa M.,National University of Sciences and Technology
AIP Advances | Year: 2015

In this paper Cattaneo-Christov heat flux model is used to investigate the rotating flow of viscoelastic fluid bounded by a stretching surface. This model is a modified version of the classical Fourier's law that takes into account the interesting aspect of thermal relaxation time. The boundary layer equations are first modeled and then reduced to self-similar forms via similarity approach. Both analytical and numerical solutions are obtained and found in excellent agreement. Our computations reveal that velocity is inversely proportional to the viscoelastic fluid parameter. Further fluid temperature has inverse relationship with the relaxation time for heat flux and with the Prandtl number. Present consideration even in the case of Newtonian fluid does not yet exist in the literature. © 2015 Author(s).


Farooqui S.Z.,National University of Sciences and Technology
Renewable and Sustainable Energy Reviews | Year: 2014

Solar cookers may be generally classified into direct and indirect types. The direct types include the box type and parabolic type, while the indirect types include the vacuum tube based cookers. This paper reviews the gradual progress made in the second type. The energy and exergy analysis of a single vacuum tube based prototype has been carried out experimentally. Performance parameters indicate a high peak exergy power of 55.6 W, while the temperature difference gap at half power is 38.75 K and the quality factor is 0.042. The energy efficiency of the cooker is 20-30%, while the exergy efficiency is 4-6%. These results make this compact single family solar cooker comparable in performance to large community based Scheffer type solar cookers. Results have been compared to a number of other solar cooker types. © 2014 Elsevier Ltd.


Akbar N.S.,National University of Sciences and Technology
IEEE Transactions on Nanotechnology | Year: 2014

The peristaltic flow of an incompressible viscous-fluid-containing metallic nanoparticles in an irregular conduit is analyzed. The metallic nanoparticles for the peristaltic flow are not explored so far. The governing equations are streamlined using 'long wavelength and low Reynolds number approximation.' Exact solutions have been evaluated for velocity, pressure gradient, the solid volume fraction of the nanoparticles, and temperature profile. The effects of various flow parameters, i.e., Hartmann number, Eckert number, the solid volume fraction of the nanoparticles amplitude ratio, and Prandtl number are presented graphically. © 2014 IEEE.


Akbar N.S.,National University of Sciences and Technology
Journal of Computational and Theoretical Nanoscience | Year: 2014

Peristaltic flow analysis is recycled to study the movement and heat allocation of Maxwell carbon nano tubes in an irregular canal with the occurrence of compelling field. This is the first paper on the peristaltic flow with Maxwell carbon nanotubes (CNTs) suspensions in an asymmetric channel. Two forms of carbon nanotubes, specifically, "single- and multi-wall carbon nanotubes" are used through water as sordid fluids. The observed relationships are used for the thermo-physical possessions of CNTs in positions of the dense capacity segment of CNTs. The leading calculations are abridged using "long wavelength and low Reynolds number approximation." Exact solutions have been evaluated for "velocity, pressure gradient, the solid volume fraction" of the CNTs and temperature silhouette. The possessions of various flow parameters, i.e., "Hartmann number M, the solid volume fraction of the nanoparticles φ, Grashof number Gr and Prandtl number Pr are presented graphically for both single-(SWCNT) and multi-wall carbon nanotubes (MWCNT)." Copyright © 2014 American Scientific Publishers All rights reserved.


Akbar N.S.,National University of Sciences and Technology
Journal of Computational and Theoretical Nanoscience | Year: 2014

In the present article copper nanoparticles for the peristaltic flow in two tubes (endoscope) are discussed is discussed. The copper nanoparticles in the peristaltic literature with water as base fluid is not explored upto yet. The equations for the Cu-water nanofluid are formulated first time in literature and simplified under the long wavelength and small Reynolds quantity suppositions. Numerical elucidations have been conceded out for "velocity, pressure gradient, the solid volume fraction of the nanoparticles and temperature profile." Inspirations of numerous flow constraints on the flow and heat transmission physiognomies are developed. © 2014 American Scientific Publishers.


Akbar N.S.,National University of Sciences and Technology
Journal of Computational and Theoretical Nanoscience | Year: 2014

Peristaltic flow genre is rummage-sale to study the flow movement and heat transmission of carbonano tubes in an disproportionate canal in the occurrence of magnetic field. This is the first paper on the peristaltic flow of carbon nanotubes (CNTs) in an asymmetric channel. Two kinds of carbon nanotubes, namely, "single- and multi-wall carbon nanotubes" are used with water as base fluids. The pragmatic associations are recycled for the thermo-physical possessions of CNTs in relations of the "solid volume fraction" of CNTs. The prevailing equivalences are abridged using "long wavelength and low Reynolds number approximation." Exact elucidations have been assessed for "velocity, pressure gradient, the solid volume fraction of the CNTs and temperature profile." The possessions of numerous flow limitations, i.e., "Hatmann number M, the solid volume fraction of the nanoparticles φ Grashof number G and Prandtl number Pr " are presented explicitly for both "single- (SWCNT) and multi-wall carbon nanotubes (MWCNT)." Copyright © 2014 American Scientific Publishers.


Waqas A.,National University of Sciences and Technology | Ud Din Z.,National University of Sciences and Technology
Renewable and Sustainable Energy Reviews | Year: 2013

Globally, buildings are responsible for 40% of the total world annual energy consumption which is responsible for one-third of green house gas emissions around the world. A significant portion of this energy is used for lighting, heating, cooling, and air conditioning purposes in buildings. Increasing awareness of the environmental impact of green house gas emissions and CFCs triggered a renewed interest in environmentally friendly cooling, and heating technologies for buildings. Free cooling of buildings may be seen as an alternate to compressor based air conditioning systems used for the buildings. In free cooling, nighttime cold is accumulated in storage material and extracted when needed. Latent heat storage using phase change materials (PCMs) can be used for free-cooling purposes due to their high storage density. In free cooling, using PCM as storage material, cool air during night is used to solidify the PCM and the accumulated cold is extracted during the hot day times. In this article a detailed review of work conducted by different researchers on PCM based free cooling is presented. Major challenges being faced in the design of PCM based free cooling system such as phase change materials; their thermo-physical properties and the geometry of encapsulation are elaborated and discussed in detail. Also the parameters effecting the charging and discharging of PCM, effect of phase change temperature and climatic conditions on thermal performance of the free cooling system are also discussed. Potential reduction in CO2 emissions due to the applicability of free cooling systems in residential and commercial buildings is also discussed in this article. This paper also provides a comprehensive list of the PCMs currently being used and that can be used potentially for free cooling applications. At last, this paper also presents some current problems needed further research in this area. © 2012 Elsevier Ltd.


Farooqui S.Z.,National University of Sciences and Technology
Renewable and Sustainable Energy Reviews | Year: 2014

Pakistan is the sixth most populous country of the world comprising 2.56% of the total global population. However, it ranks 37th in the energy consumption, at 0.37% of the world total. The per capita energy availability is only 43 W, which is 1/7th of the world average. The greatest reason for such a huge energy deficiency is its heavy dependence on imported oil for power generation. The country is however, rich in renewable energy sources and has vast potential for their exploitation. In this article, a survey of the availability of various renewable energy sources, including hydel, solar, wind and biomass, and their current and future penetration prospects in the total energy mix have been carried out, with some recommendations. It is estimated that Pakistan has the feasible potential of 30 GW of installed power capacity from hydel and 50 GW of installed capacity from wind by 2030. © 2013 Elsevier Ltd. All rights reserved.

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