Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Numerical simulation of unsteady water-based nanofluid flow and heat transfer between two orthogonally moving porous coaxial disks

100%

Ali K. , Farooq Iqbal M. , Akbar Z. , Ashraf M.

tom Vol. 52 nr 4

1033--1046

We present the numerical study of unsteady hydromagnetic (MHD) flow and heat trans- fer characteristics of a viscous incompressible electrically conducting water-based nanofluid (containing Al₂O₃ nanoparticles) between two orthogonally moving porous coaxial disks with suction. Different from the classical shooting methodology, we employ a combination of a direct and an iterative method (SOR with optimal relaxation parameter) for solving the sparse systems of linear algebraic equations arising from the FD discretization of the linearized self similar nonlinear ODEs. Effects of the governing parameters on the flow and heat transfer are discussed and presented through tables and graphs. The findings of the present investigation may be beneficial for electronic industry in maintaining the electronic components under effective and safe operational conditions.

Urban sprawl and its impact on soil and plant species in Peshawar, Pakistan

63%

Ali K. , Shuaib M. , Malik T. , Shah S. S. , Ali S. , Shah N. A. , Hussain F. , Khan I. , Akhtar N. , Li Z.

nr 4

The current paper aims to highlight: 1) Major problems due to urbanization, including land cutting, erosion, overgrazing, biodiversity loss, and climate change. 2) The impact of grazing on plant community structure and ecosystem functioning. 3) Management and conservation of natural ecosystems in Sheikh Muhammdi Peshawar. For the current work, three different sites (Zones 1, 11, 111) were selected in the local area. The populations of the local area have increased very rapidly in the last 40 to 50 years. Anthropogenic activities associated with population and industrialization in the district, with vegetation clear for developing of towns and roads, has resulted in the substitution of vegetations with the dark color surface, the temperature of the environments much higher than before, leading to the phenomenon of the urban heat island effect. This urbanization and construction work at Amman plots Sheikh Muhammadi Peshawar is causing the extinction of vegetation and there would be no more wild vegetation in the near future in that particular area.