نتایج جستجو برای: circular concrete tanks

تعداد نتایج: 149126  

2008
A. I. STAMOU D. L. GIOKAS P. A. PARASKEVAS

A simple model is presented for the dynamic calculation of the sludge blanket height and concentrations of suspended solids (diluted, sludge blanket and return sludge) in circular secondary settling tanks. The model combines a mass balance equation with three empirical equations, which account for the main processes. These equations form a non-linear, dynamic system, which cannot be solved expl...

Journal: :Physics of Fluids 2023

The effect of sinusoidal vibration is numerically investigated on the settling dynamics a heavy particle circular shape immersed in viscoplastic fluid obeying regularized Bingham–Papanastasiou (BP) model. Having modeled solid as highly viscous Newtonian droplet, we have relied finite element method for solving equations motion and surrounding fluid. Our numerical results could closely recover t...

Journal: :Journal of Cleaner Production 2022

Concrete is the world's most widely-used anthropogenic material, and Circular Economy strategies will be key to addressing myriad challenges that face its use today into future. Despite a rapid growth of research interest in developing for concrete, this has mostly focussed on technical environmental issues at material product scale. Holistic approaches considering wider social political aspect...

Journal: :محیط شناسی 0
عبدالرضا کرباسی مهندسی محیط زیست دانشکدة محیط زیست دانشگاه تهران غلامرضا نبی بیدهندی دانشیار مهندسی محیط زیست دانشکدة محیط زیست دانشگاه تهران فرامرز معطر - استاد دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران المیرا مهین عبداله زاده کارشناس ارشد عمران- محیط زیست دانشکدة محیط زیست دانشگاه تهران

during recent years oil products has decreased because of growing population and increasing demand to oil products and decreasing of crude oil extraction at compare to export. however, to achieve suitable levels of production, the use of improved technologies should be considered. another way to prevent the evaporation and leakage from oil storage tanks and their products are using of storage t...

2000
A. Johansen D. Sornette

The fracture of materials is a catastrophic phenomenon of considerable technological and scientific importance. Here, we analysed experiments designed for industrial applications in order to test the concept that, in heterogeneous materials such as fiber composites, rocks, concrete under compression and materials with large distributed residual stresses, rupture is a genuine critical point, i.e...

Journal: :Engineer: Journal of the Institution of Engineers, Sri Lanka 2009

2000
Anders Johansen Didier Sornette

The fracture of materials is a catastrophic phenomenon of considerable technological and scientific importance. Here, we analysed experiments designed for industrial applications in order to test the concept that, in heterogeneous materials such as fiber composites, rocks, concrete under compression and materials with large distributed residual stresses, rupture is a genuine critical point, i.e...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید